/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/up.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:10:30,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:10:30,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:10:30,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:10:30,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:10:30,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:10:30,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:10:30,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:10:30,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:10:30,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:10:30,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:10:30,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:10:30,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:10:30,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:10:30,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:10:30,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:10:30,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:10:30,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:10:30,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:10:30,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:10:30,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 07:10:30,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:10:30,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:10:30,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:10:30,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:10:30,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:10:30,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:10:30,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:10:30,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:10:30,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:10:30,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:10:30,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:10:30,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:10:30,530 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:10:30,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:10:30,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:10:30,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:10:30,530 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:10:30,531 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:10:30,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:10:30,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:10:30,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:10:30,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:10:30,532 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:10:30,532 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:10:30,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:10:30,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:10:30,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:10:30,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:10:30,874 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:10:30,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/up.i [2021-05-01 07:10:30,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a430d6955/b530915ec8ca488cb44adde76e292b4c/FLAG91f9a0cef [2021-05-01 07:10:31,314 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:10:31,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i [2021-05-01 07:10:31,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a430d6955/b530915ec8ca488cb44adde76e292b4c/FLAG91f9a0cef [2021-05-01 07:10:31,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a430d6955/b530915ec8ca488cb44adde76e292b4c [2021-05-01 07:10:31,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:10:31,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:10:31,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:10:31,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:10:31,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:10:31,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393e5448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31, skipping insertion in model container [2021-05-01 07:10:31,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:10:31,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:10:31,515 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2021-05-01 07:10:31,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:10:31,541 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:10:31,552 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2021-05-01 07:10:31,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:10:31,570 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:10:31,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31 WrapperNode [2021-05-01 07:10:31,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:10:31,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:10:31,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:10:31,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:10:31,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (1/1) ... [2021-05-01 07:10:31,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:10:31,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:10:31,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:10:31,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:10:31,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:10:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:10:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:10:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:10:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:10:31,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:10:31,725 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:10:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:10:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:10:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 07:10:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 07:10:31,725 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:10:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:10:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:10:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:10:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:10:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:10:31,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:10:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:10:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:10:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:10:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:10:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:10:31,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:10:32,000 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-01 07:10:32,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:10:32 BoogieIcfgContainer [2021-05-01 07:10:32,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:10:32,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:10:32,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:10:32,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:10:32,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:10:31" (1/3) ... [2021-05-01 07:10:32,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a801e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:10:32, skipping insertion in model container [2021-05-01 07:10:32,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:10:31" (2/3) ... [2021-05-01 07:10:32,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a801e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:10:32, skipping insertion in model container [2021-05-01 07:10:32,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:10:32" (3/3) ... [2021-05-01 07:10:32,007 INFO L111 eAbstractionObserver]: Analyzing ICFG up.i [2021-05-01 07:10:32,028 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:10:32,031 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:10:32,049 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:10:32,075 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:10:32,075 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:10:32,076 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:10:32,076 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:10:32,076 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:10:32,076 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:10:32,076 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:10:32,076 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:10:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-01 07:10:32,095 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:32,096 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:32,096 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:32,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:32,102 INFO L82 PathProgramCache]: Analyzing trace with hash 661364838, now seen corresponding path program 1 times [2021-05-01 07:10:32,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:32,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790459893] [2021-05-01 07:10:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:32,158 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:10:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:32,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:32,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:32,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:32,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:32,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:32,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:32,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:32,313 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:32,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790459893] [2021-05-01 07:10:32,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [790459893] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:32,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:32,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 07:10:32,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662752190] [2021-05-01 07:10:32,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 07:10:32,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:32,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 07:10:32,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-01 07:10:32,330 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:10:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:32,535 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-05-01 07:10:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 07:10:32,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-01 07:10:32,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:32,542 INFO L225 Difference]: With dead ends: 40 [2021-05-01 07:10:32,542 INFO L226 Difference]: Without dead ends: 18 [2021-05-01 07:10:32,544 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 122.5ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-01 07:10:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-01 07:10:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-01 07:10:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-01 07:10:32,575 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-05-01 07:10:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:32,575 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-01 07:10:32,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:10:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-01 07:10:32,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 07:10:32,576 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:32,576 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:32,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:10:32,577 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:32,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:32,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1204460846, now seen corresponding path program 1 times [2021-05-01 07:10:32,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:32,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509688987] [2021-05-01 07:10:32,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:32,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:32,612 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_6 v_main_~n~0_8) InVars {main_~i~0=v_main_~i~0_6, main_~n~0=v_main_~n~0_8} OutVars{main_~i~0=v_main_~i~0_6, main_~n~0=v_main_~n~0_8} AuxVars[] AssignedVars[] [2021-05-01 07:10:32,627 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:32,636 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,638 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,642 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,644 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,647 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,651 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,653 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,664 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:32,667 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,669 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:32,671 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:32,675 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,678 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,681 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,683 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,684 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:32,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:32,706 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:32,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:32,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:32,778 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:32,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:32,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:32,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:32,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:32,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:32,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:32,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:32,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:32,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:32,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,908 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:32,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:32,936 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:32,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509688987] [2021-05-01 07:10:32,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1509688987] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:32,936 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:32,936 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 07:10:32,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077522432] [2021-05-01 07:10:32,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 07:10:32,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 07:10:32,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-05-01 07:10:32,939 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:10:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:33,357 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-01 07:10:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 07:10:33,358 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-01 07:10:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:33,360 INFO L225 Difference]: With dead ends: 32 [2021-05-01 07:10:33,360 INFO L226 Difference]: Without dead ends: 30 [2021-05-01 07:10:33,362 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 401.6ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:10:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-01 07:10:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2021-05-01 07:10:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:33,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-05-01 07:10:33,378 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2021-05-01 07:10:33,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:33,379 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-05-01 07:10:33,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 07:10:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-05-01 07:10:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-01 07:10:33,380 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:33,380 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:33,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:10:33,380 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:33,381 INFO L82 PathProgramCache]: Analyzing trace with hash -801413244, now seen corresponding path program 1 times [2021-05-01 07:10:33,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:33,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162617101] [2021-05-01 07:10:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:33,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:33,399 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_10 v_main_~n~0_9) InVars {main_~i~0=v_main_~i~0_10, main_~n~0=v_main_~n~0_9} OutVars{main_~i~0=v_main_~i~0_10, main_~n~0=v_main_~n~0_9} AuxVars[] AssignedVars[] [2021-05-01 07:10:33,412 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:33,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,421 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,424 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,428 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,430 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,433 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,435 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,441 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,444 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:33,445 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:33,448 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:33,453 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,456 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,459 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,461 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,463 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:33,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:33,487 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:33,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:33,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:33,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:33,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:33,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:33,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:33,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:33,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:33,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:33,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:33,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:33,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:33,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:33,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:33,791 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:33,793 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:33,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:33,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:33,808 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:33,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162617101] [2021-05-01 07:10:33,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1162617101] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:33,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:33,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-01 07:10:33,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447439070] [2021-05-01 07:10:33,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 07:10:33,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:33,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 07:10:33,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-05-01 07:10:33,814 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:34,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:34,284 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2021-05-01 07:10:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-01 07:10:34,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-05-01 07:10:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:34,286 INFO L225 Difference]: With dead ends: 39 [2021-05-01 07:10:34,286 INFO L226 Difference]: Without dead ends: 26 [2021-05-01 07:10:34,287 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 500.0ms TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2021-05-01 07:10:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-01 07:10:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-05-01 07:10:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-05-01 07:10:34,293 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2021-05-01 07:10:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:34,293 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-05-01 07:10:34,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-05-01 07:10:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:10:34,294 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:34,294 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:34,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 07:10:34,294 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:34,294 INFO L82 PathProgramCache]: Analyzing trace with hash -447407028, now seen corresponding path program 2 times [2021-05-01 07:10:34,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:34,295 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418153064] [2021-05-01 07:10:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:34,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:34,300 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_14 v_main_~n~0_10) InVars {main_~i~0=v_main_~i~0_14, main_~n~0=v_main_~n~0_10} OutVars{main_~i~0=v_main_~i~0_14, main_~n~0=v_main_~n~0_10} AuxVars[] AssignedVars[] [2021-05-01 07:10:34,304 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:34,311 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,319 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:34,320 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:34,323 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,326 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,328 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:34,330 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,334 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,338 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,341 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,343 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,347 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,349 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,352 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,353 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:34,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:34,370 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:34,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:34,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:34,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:34,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:34,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:34,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:34,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:34,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:34,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:34,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:34,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:34,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:34,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:34,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:34,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:34,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:34,564 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:34,566 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:34,582 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:34,583 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:34,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:34,600 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:34,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418153064] [2021-05-01 07:10:34,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1418153064] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:34,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:34,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 07:10:34,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49447229] [2021-05-01 07:10:34,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-01 07:10:34,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:34,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-01 07:10:34,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-05-01 07:10:34,601 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:35,105 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-05-01 07:10:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 07:10:35,106 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-05-01 07:10:35,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:35,107 INFO L225 Difference]: With dead ends: 41 [2021-05-01 07:10:35,107 INFO L226 Difference]: Without dead ends: 27 [2021-05-01 07:10:35,107 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 475.8ms TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:10:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-01 07:10:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-05-01 07:10:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:35,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-05-01 07:10:35,113 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2021-05-01 07:10:35,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:35,114 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-05-01 07:10:35,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-05-01 07:10:35,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 07:10:35,114 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:35,115 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:35,115 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 07:10:35,115 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:35,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1936851076, now seen corresponding path program 3 times [2021-05-01 07:10:35,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:35,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386188624] [2021-05-01 07:10:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:35,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:35,121 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_19 v_main_~n~0_11) InVars {main_~i~0=v_main_~i~0_19, main_~n~0=v_main_~n~0_11} OutVars{main_~i~0=v_main_~i~0_19, main_~n~0=v_main_~n~0_11} AuxVars[] AssignedVars[] [2021-05-01 07:10:35,124 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:35,125 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,129 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,132 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:35,133 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:35,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,143 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,145 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:35,150 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,153 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,156 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,158 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,160 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,171 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,173 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,175 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:35,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:35,197 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:35,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:35,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:35,251 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:35,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:35,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:35,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:35,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:35,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:35,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:35,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:35,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:35,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:35,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:35,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:35,410 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:35,413 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:35,428 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:35,429 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:35,444 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:35,446 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:35,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:35,461 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:35,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386188624] [2021-05-01 07:10:35,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [386188624] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:35,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:35,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-05-01 07:10:35,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437552718] [2021-05-01 07:10:35,462 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 07:10:35,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:35,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 07:10:35,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-05-01 07:10:35,463 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:36,008 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-01 07:10:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-01 07:10:36,009 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-05-01 07:10:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:36,010 INFO L225 Difference]: With dead ends: 42 [2021-05-01 07:10:36,010 INFO L226 Difference]: Without dead ends: 28 [2021-05-01 07:10:36,010 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 513.7ms TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-05-01 07:10:36,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-05-01 07:10:36,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-05-01 07:10:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-05-01 07:10:36,016 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2021-05-01 07:10:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:36,016 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-05-01 07:10:36,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:36,016 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-05-01 07:10:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-01 07:10:36,017 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:36,017 INFO L519 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:36,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 07:10:36,017 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:36,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:36,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1460559028, now seen corresponding path program 4 times [2021-05-01 07:10:36,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:36,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230974148] [2021-05-01 07:10:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:36,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:36,023 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_25 v_main_~n~0_12) InVars {main_~i~0=v_main_~i~0_25, main_~n~0=v_main_~n~0_12} OutVars{main_~i~0=v_main_~i~0_25, main_~n~0=v_main_~n~0_12} AuxVars[] AssignedVars[] [2021-05-01 07:10:36,026 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:36,028 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,033 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:36,035 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,036 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:36,039 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,041 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:36,044 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,046 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,049 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,051 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,053 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,055 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,057 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,059 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,061 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,062 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:36,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:36,080 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:36,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:36,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:36,121 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:36,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:36,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:36,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:36,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:36,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:36,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:36,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:36,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:36,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:36,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:36,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:36,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:36,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:36,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:36,264 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:36,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:36,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,280 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:36,298 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:36,300 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:36,316 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:36,317 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:36,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:36,333 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:36,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230974148] [2021-05-01 07:10:36,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [230974148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:36,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:36,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:10:36,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962357026] [2021-05-01 07:10:36,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-01 07:10:36,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:36,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-01 07:10:36,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-05-01 07:10:36,334 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:37,004 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2021-05-01 07:10:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:10:37,005 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-05-01 07:10:37,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:37,006 INFO L225 Difference]: With dead ends: 43 [2021-05-01 07:10:37,006 INFO L226 Difference]: Without dead ends: 29 [2021-05-01 07:10:37,007 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 567.3ms TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2021-05-01 07:10:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-01 07:10:37,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-01 07:10:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-05-01 07:10:37,012 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2021-05-01 07:10:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:37,013 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-05-01 07:10:37,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-05-01 07:10:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-01 07:10:37,013 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:37,013 INFO L519 BasicCegarLoop]: trace histogram [5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:37,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 07:10:37,014 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash 593910148, now seen corresponding path program 5 times [2021-05-01 07:10:37,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:37,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239827988] [2021-05-01 07:10:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:37,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:37,019 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_32 v_main_~n~0_13) InVars {main_~i~0=v_main_~i~0_32, main_~n~0=v_main_~n~0_13} OutVars{main_~i~0=v_main_~i~0_32, main_~n~0=v_main_~n~0_13} AuxVars[] AssignedVars[] [2021-05-01 07:10:37,022 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:37,025 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,027 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,029 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,031 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,033 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,036 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,039 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,042 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,046 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:37,046 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:37,049 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:37,051 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,055 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,057 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,059 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,060 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:37,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:37,077 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:37,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:37,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:37,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:37,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:37,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:37,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:37,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:37,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:37,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:37,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:37,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:37,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:37,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:37,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:37,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:37,237 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:37,239 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:37,252 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:37,253 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:37,268 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:37,271 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:37,295 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:37,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:37,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,317 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:37,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:37,343 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:37,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239827988] [2021-05-01 07:10:37,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [239827988] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:37,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:37,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-01 07:10:37,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452691336] [2021-05-01 07:10:37,344 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:10:37,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:37,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:10:37,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:10:37,345 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:37,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:37,902 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-05-01 07:10:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-01 07:10:37,902 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-05-01 07:10:37,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:37,903 INFO L225 Difference]: With dead ends: 44 [2021-05-01 07:10:37,903 INFO L226 Difference]: Without dead ends: 30 [2021-05-01 07:10:37,904 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 574.4ms TimeCoverageRelationStatistics Valid=142, Invalid=788, Unknown=0, NotChecked=0, Total=930 [2021-05-01 07:10:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-05-01 07:10:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-05-01 07:10:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-05-01 07:10:37,909 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 25 [2021-05-01 07:10:37,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:37,909 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-05-01 07:10:37,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:37,909 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-05-01 07:10:37,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-05-01 07:10:37,910 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:37,910 INFO L519 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:37,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 07:10:37,910 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:37,911 INFO L82 PathProgramCache]: Analyzing trace with hash -142054836, now seen corresponding path program 6 times [2021-05-01 07:10:37,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:37,911 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431835985] [2021-05-01 07:10:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:37,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:37,916 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_40 v_main_~n~0_14) InVars {main_~i~0=v_main_~i~0_40, main_~n~0=v_main_~n~0_14} OutVars{main_~i~0=v_main_~i~0_40, main_~n~0=v_main_~n~0_14} AuxVars[] AssignedVars[] [2021-05-01 07:10:37,918 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:37,921 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,923 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,925 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,927 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,930 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,932 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,932 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,936 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:37,938 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,939 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:37,941 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:37,943 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,945 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,947 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,949 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,950 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:37,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:37,966 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:37,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:37,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:37,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:37,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:37,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:38,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:38,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:38,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:38,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:38,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:38,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:38,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:38,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:38,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:38,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:38,136 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:38,137 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:38,150 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:38,152 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:38,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,167 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:38,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,191 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:38,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,210 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:38,230 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:38,230 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:38,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:38,247 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:38,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431835985] [2021-05-01 07:10:38,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1431835985] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:38,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:38,247 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 07:10:38,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703306909] [2021-05-01 07:10:38,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-01 07:10:38,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:38,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-01 07:10:38,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-05-01 07:10:38,248 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:38,821 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2021-05-01 07:10:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 07:10:38,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-05-01 07:10:38,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:38,823 INFO L225 Difference]: With dead ends: 45 [2021-05-01 07:10:38,823 INFO L226 Difference]: Without dead ends: 31 [2021-05-01 07:10:38,823 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 571.1ms TimeCoverageRelationStatistics Valid=153, Invalid=903, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:10:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-05-01 07:10:38,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-05-01 07:10:38,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-05-01 07:10:38,829 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2021-05-01 07:10:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:38,829 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-05-01 07:10:38,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-05-01 07:10:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-01 07:10:38,829 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:38,830 INFO L519 BasicCegarLoop]: trace histogram [7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:38,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 07:10:38,830 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:38,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1482132860, now seen corresponding path program 7 times [2021-05-01 07:10:38,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:38,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320456027] [2021-05-01 07:10:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:38,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:38,836 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_49 v_main_~n~0_15) InVars {main_~i~0=v_main_~i~0_49, main_~n~0=v_main_~n~0_15} OutVars{main_~i~0=v_main_~i~0_49, main_~n~0=v_main_~n~0_15} AuxVars[] AssignedVars[] [2021-05-01 07:10:38,838 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:38,841 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,843 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,845 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,848 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,850 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,852 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,853 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,858 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:38,861 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,861 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:38,867 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,869 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,871 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:38,873 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,875 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,876 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:38,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:38,894 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:38,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:38,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:38,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:38,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:38,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:38,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:38,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:38,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:38,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:38,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:38,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:38,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:38,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:38,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:38,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:39,064 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:39,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:39,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,080 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:39,101 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:39,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:39,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,118 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:39,141 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:39,142 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:39,160 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:39,161 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:39,178 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:39,179 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:39,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:39,197 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:39,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320456027] [2021-05-01 07:10:39,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1320456027] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:39,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:39,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 07:10:39,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327789470] [2021-05-01 07:10:39,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 07:10:39,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:39,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 07:10:39,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-05-01 07:10:39,198 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:39,840 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2021-05-01 07:10:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-01 07:10:39,853 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2021-05-01 07:10:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:39,854 INFO L225 Difference]: With dead ends: 46 [2021-05-01 07:10:39,854 INFO L226 Difference]: Without dead ends: 32 [2021-05-01 07:10:39,854 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 671.7ms TimeCoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 07:10:39,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-01 07:10:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-05-01 07:10:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-05-01 07:10:39,859 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2021-05-01 07:10:39,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:39,860 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-05-01 07:10:39,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-05-01 07:10:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-01 07:10:39,860 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:39,860 INFO L519 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:39,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-01 07:10:39,861 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:39,861 INFO L82 PathProgramCache]: Analyzing trace with hash -74878644, now seen corresponding path program 8 times [2021-05-01 07:10:39,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:39,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766101484] [2021-05-01 07:10:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:39,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:39,881 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_59 v_main_~n~0_16) InVars {main_~i~0=v_main_~i~0_59, main_~n~0=v_main_~n~0_16} OutVars{main_~i~0=v_main_~i~0_59, main_~n~0=v_main_~n~0_16} AuxVars[] AssignedVars[] [2021-05-01 07:10:39,884 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:39,887 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,889 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,892 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,895 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,898 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,900 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,901 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,905 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,908 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:39,908 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:39,912 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,914 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:39,916 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,918 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,921 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,921 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:39,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:39,937 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:39,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:39,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:39,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:39,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:39,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:39,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:39,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:39,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:40,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:40,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:40,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:40,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:40,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:40,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:40,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:40,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,099 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:40,125 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:40,126 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:40,142 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:40,143 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:40,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,161 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:40,185 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:40,186 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:40,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,204 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:40,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,228 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:40,253 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:40,254 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:40,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:40,271 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:40,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766101484] [2021-05-01 07:10:40,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [766101484] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:40,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:40,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:10:40,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944748962] [2021-05-01 07:10:40,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-01 07:10:40,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-01 07:10:40,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-05-01 07:10:40,273 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:40,950 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2021-05-01 07:10:40,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-01 07:10:40,951 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-05-01 07:10:40,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:40,951 INFO L225 Difference]: With dead ends: 47 [2021-05-01 07:10:40,952 INFO L226 Difference]: Without dead ends: 33 [2021-05-01 07:10:40,952 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 710.2ms TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 07:10:40,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-01 07:10:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-05-01 07:10:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-05-01 07:10:40,958 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2021-05-01 07:10:40,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:40,958 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-05-01 07:10:40,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:40,958 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-05-01 07:10:40,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 07:10:40,958 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:40,959 INFO L519 BasicCegarLoop]: trace histogram [9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:40,959 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-01 07:10:40,959 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:40,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:40,959 INFO L82 PathProgramCache]: Analyzing trace with hash 600329092, now seen corresponding path program 9 times [2021-05-01 07:10:40,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:40,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270570697] [2021-05-01 07:10:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:40,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:40,964 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_70 v_main_~n~0_17) InVars {main_~i~0=v_main_~i~0_70, main_~n~0=v_main_~n~0_17} OutVars{main_~i~0=v_main_~i~0_70, main_~n~0=v_main_~n~0_17} AuxVars[] AssignedVars[] [2021-05-01 07:10:40,965 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:40,968 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,970 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,973 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,975 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,977 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,979 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,980 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,983 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,986 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:40,986 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:40,989 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:40,992 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,994 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,996 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,998 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:40,999 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:41,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:41,015 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:41,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:41,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:41,037 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:41,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:41,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:41,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:41,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:41,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:41,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:41,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:41,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:41,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:41,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:41,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:41,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:41,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:41,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,169 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:41,193 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:41,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:41,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,211 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:41,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,229 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:41,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,248 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:41,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,269 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:41,289 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:41,290 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:41,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,318 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:41,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,342 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:41,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:41,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:41,365 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:41,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270570697] [2021-05-01 07:10:41,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [270570697] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:41,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:41,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-01 07:10:41,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411377789] [2021-05-01 07:10:41,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:10:41,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:41,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:10:41,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:10:41,366 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:42,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:42,047 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2021-05-01 07:10:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-01 07:10:42,047 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-05-01 07:10:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:42,048 INFO L225 Difference]: With dead ends: 48 [2021-05-01 07:10:42,048 INFO L226 Difference]: Without dead ends: 34 [2021-05-01 07:10:42,049 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 737.6ms TimeCoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 07:10:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-01 07:10:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-05-01 07:10:42,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:42,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-05-01 07:10:42,056 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 29 [2021-05-01 07:10:42,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:42,058 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-05-01 07:10:42,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 17 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-05-01 07:10:42,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-05-01 07:10:42,061 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:42,061 INFO L519 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:42,061 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-01 07:10:42,061 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:42,062 INFO L82 PathProgramCache]: Analyzing trace with hash 56932428, now seen corresponding path program 10 times [2021-05-01 07:10:42,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:42,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90554160] [2021-05-01 07:10:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:42,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:42,070 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_82 v_main_~n~0_18) InVars {main_~i~0=v_main_~i~0_82, main_~n~0=v_main_~n~0_18} OutVars{main_~i~0=v_main_~i~0_82, main_~n~0=v_main_~n~0_18} AuxVars[] AssignedVars[] [2021-05-01 07:10:42,073 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:42,074 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,077 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,080 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:42,080 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:42,083 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:42,086 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,088 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,090 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,093 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,096 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,099 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,101 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,103 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,105 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,106 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:42,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:42,122 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:42,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:42,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:42,161 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:42,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:42,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:42,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:42,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:42,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:42,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:42,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:42,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:42,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:42,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:42,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:42,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:42,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,288 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:42,314 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:42,317 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:42,332 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:42,333 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:42,350 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:42,351 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:42,366 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:42,368 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:42,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,384 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:42,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,409 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:42,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,435 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:42,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,467 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:42,490 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:42,491 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:42,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:42,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:42,511 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:42,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90554160] [2021-05-01 07:10:42,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [90554160] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:42,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:42,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 07:10:42,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196950902] [2021-05-01 07:10:42,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-01 07:10:42,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:42,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-01 07:10:42,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:10:42,512 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:43,254 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-05-01 07:10:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-01 07:10:43,267 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-05-01 07:10:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:43,267 INFO L225 Difference]: With dead ends: 49 [2021-05-01 07:10:43,268 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 07:10:43,268 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 788.9ms TimeCoverageRelationStatistics Valid=197, Invalid=1443, Unknown=0, NotChecked=0, Total=1640 [2021-05-01 07:10:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 07:10:43,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-05-01 07:10:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 27 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-05-01 07:10:43,274 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 30 [2021-05-01 07:10:43,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:43,274 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-05-01 07:10:43,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-05-01 07:10:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-01 07:10:43,275 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:43,275 INFO L519 BasicCegarLoop]: trace histogram [11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:43,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-01 07:10:43,275 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:43,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash 391505028, now seen corresponding path program 11 times [2021-05-01 07:10:43,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:43,276 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670307349] [2021-05-01 07:10:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:43,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:43,280 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_95 v_main_~n~0_19) InVars {main_~i~0=v_main_~i~0_95, main_~n~0=v_main_~n~0_19} OutVars{main_~i~0=v_main_~i~0_95, main_~n~0=v_main_~n~0_19} AuxVars[] AssignedVars[] [2021-05-01 07:10:43,282 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:43,283 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,289 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,291 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:43,292 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:43,295 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,297 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:43,299 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,301 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,304 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,307 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,309 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,311 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,313 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,317 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,318 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:43,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:43,335 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:43,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:43,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:43,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:43,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:43,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:43,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:43,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:43,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:43,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:43,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:43,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:43,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:43,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,495 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:43,528 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:43,529 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:43,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,542 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:43,559 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:43,561 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:43,580 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:43,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:43,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,596 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:43,616 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:43,618 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:43,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,649 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:43,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,671 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:43,694 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:43,696 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:43,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,715 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:43,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,738 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:43,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670307349] [2021-05-01 07:10:43,738 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [670307349] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:43,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:43,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 07:10:43,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134828631] [2021-05-01 07:10:43,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 07:10:43,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:43,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 07:10:43,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-05-01 07:10:43,740 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:44,499 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2021-05-01 07:10:44,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-01 07:10:44,499 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2021-05-01 07:10:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:44,500 INFO L225 Difference]: With dead ends: 50 [2021-05-01 07:10:44,500 INFO L226 Difference]: Without dead ends: 36 [2021-05-01 07:10:44,501 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 816.5ms TimeCoverageRelationStatistics Valid=188, Invalid=1618, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 07:10:44,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-01 07:10:44,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-05-01 07:10:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-05-01 07:10:44,530 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2021-05-01 07:10:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:44,531 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-05-01 07:10:44,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.25) internal successors, (25), 19 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-05-01 07:10:44,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-01 07:10:44,532 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:44,532 INFO L519 BasicCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:44,532 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-01 07:10:44,532 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:44,532 INFO L82 PathProgramCache]: Analyzing trace with hash -2121646260, now seen corresponding path program 12 times [2021-05-01 07:10:44,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:44,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704356463] [2021-05-01 07:10:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:44,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:44,538 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_109 v_main_~n~0_20) InVars {main_~i~0=v_main_~i~0_109, main_~n~0=v_main_~n~0_20} OutVars{main_~i~0=v_main_~i~0_109, main_~n~0=v_main_~n~0_20} AuxVars[] AssignedVars[] [2021-05-01 07:10:44,541 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:44,544 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,546 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,548 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,550 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,552 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,554 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,555 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,561 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:44,563 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,563 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:44,566 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,568 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,570 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,572 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:44,574 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,575 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:44,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:44,590 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:44,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:44,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:44,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:44,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:44,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:44,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:44,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:44,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:44,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:44,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:44,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:44,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:44,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:44,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:44,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:44,756 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:44,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:44,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,772 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:44,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,793 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:44,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,811 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:44,830 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:44,831 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:44,846 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:44,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:44,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,865 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:44,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,887 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:44,909 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:44,910 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:44,930 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:44,931 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:44,951 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:44,952 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:44,972 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:44,973 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:44,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:44,998 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:44,998 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704356463] [2021-05-01 07:10:44,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1704356463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:44,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:44,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 07:10:44,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803048260] [2021-05-01 07:10:44,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 07:10:44,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:44,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 07:10:44,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-05-01 07:10:44,999 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:45,892 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-05-01 07:10:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-01 07:10:45,892 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-05-01 07:10:45,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:45,893 INFO L225 Difference]: With dead ends: 51 [2021-05-01 07:10:45,893 INFO L226 Difference]: Without dead ends: 37 [2021-05-01 07:10:45,894 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 917.6ms TimeCoverageRelationStatistics Valid=219, Invalid=1761, Unknown=0, NotChecked=0, Total=1980 [2021-05-01 07:10:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-01 07:10:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-05-01 07:10:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-05-01 07:10:45,902 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2021-05-01 07:10:45,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:45,902 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-05-01 07:10:45,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:45,903 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-05-01 07:10:45,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 07:10:45,903 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:45,903 INFO L519 BasicCegarLoop]: trace histogram [13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:45,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-01 07:10:45,903 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:45,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:45,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1575042436, now seen corresponding path program 13 times [2021-05-01 07:10:45,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:45,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396199649] [2021-05-01 07:10:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:45,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:45,910 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_124 v_main_~n~0_21) InVars {main_~i~0=v_main_~i~0_124, main_~n~0=v_main_~n~0_21} OutVars{main_~i~0=v_main_~i~0_124, main_~n~0=v_main_~n~0_21} AuxVars[] AssignedVars[] [2021-05-01 07:10:45,912 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:45,913 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,916 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,919 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:45,919 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:45,921 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:45,925 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,927 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,930 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,932 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,934 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,936 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,938 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,940 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,942 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,944 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,944 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:45,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:45,960 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:45,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:45,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:45,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:45,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:45,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:45,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:45,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:46,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:46,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:46,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:46,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:46,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:46,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:46,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:46,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:46,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:46,104 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:46,105 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:46,119 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:46,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:46,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,138 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:46,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,164 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:46,186 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:46,187 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:46,205 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:46,206 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:46,225 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:46,226 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:46,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,246 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:46,271 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:46,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:46,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,294 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:46,322 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:46,323 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:46,346 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:46,347 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:46,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,371 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:46,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:46,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:46,401 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:46,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396199649] [2021-05-01 07:10:46,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [396199649] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:46,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:46,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 07:10:46,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808391230] [2021-05-01 07:10:46,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-01 07:10:46,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-01 07:10:46,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:10:46,402 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:47,336 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-05-01 07:10:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-01 07:10:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-05-01 07:10:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:47,337 INFO L225 Difference]: With dead ends: 52 [2021-05-01 07:10:47,338 INFO L226 Difference]: Without dead ends: 38 [2021-05-01 07:10:47,338 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 1021.1ms TimeCoverageRelationStatistics Valid=230, Invalid=1932, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 07:10:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-01 07:10:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-05-01 07:10:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 30 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-05-01 07:10:47,343 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2021-05-01 07:10:47,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:47,343 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-05-01 07:10:47,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 21 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-05-01 07:10:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-01 07:10:47,344 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:47,344 INFO L519 BasicCegarLoop]: trace histogram [14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:47,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-01 07:10:47,344 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:47,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:47,345 INFO L82 PathProgramCache]: Analyzing trace with hash 208275020, now seen corresponding path program 14 times [2021-05-01 07:10:47,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:47,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108051524] [2021-05-01 07:10:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:47,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:47,350 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_140 v_main_~n~0_22) InVars {main_~i~0=v_main_~i~0_140, main_~n~0=v_main_~n~0_22} OutVars{main_~i~0=v_main_~i~0_140, main_~n~0=v_main_~n~0_22} AuxVars[] AssignedVars[] [2021-05-01 07:10:47,352 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:47,354 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,362 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,364 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,366 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,368 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,370 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,370 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,373 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:47,375 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,375 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:47,378 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,379 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:47,381 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,383 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,385 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,385 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:47,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:47,399 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:47,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:47,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:47,427 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:47,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:47,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:47,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:47,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:47,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:47,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:47,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:47,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:47,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:47,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:47,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:47,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:47,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,539 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:47,559 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:47,560 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:47,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,575 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:47,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,593 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:47,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,611 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:47,631 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:47,632 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:47,649 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:47,650 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:47,674 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:47,674 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:47,692 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:47,693 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:47,719 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:47,720 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:47,747 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:47,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:47,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,776 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:47,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,808 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:47,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,840 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:47,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:47,867 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:47,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108051524] [2021-05-01 07:10:47,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [108051524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:47,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:47,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 07:10:47,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324917388] [2021-05-01 07:10:47,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 07:10:47,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:47,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 07:10:47,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-05-01 07:10:47,868 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:48,774 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2021-05-01 07:10:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-01 07:10:48,774 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-05-01 07:10:48,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:48,775 INFO L225 Difference]: With dead ends: 53 [2021-05-01 07:10:48,775 INFO L226 Difference]: Without dead ends: 39 [2021-05-01 07:10:48,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1006.1ms TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2021-05-01 07:10:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-01 07:10:48,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-05-01 07:10:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-05-01 07:10:48,782 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 34 [2021-05-01 07:10:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:48,782 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-05-01 07:10:48,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-05-01 07:10:48,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-01 07:10:48,782 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:48,783 INFO L519 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:48,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-01 07:10:48,783 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:48,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:48,783 INFO L82 PathProgramCache]: Analyzing trace with hash 788158084, now seen corresponding path program 15 times [2021-05-01 07:10:48,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:48,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132826715] [2021-05-01 07:10:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:48,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:48,791 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_157 v_main_~n~0_23) InVars {main_~i~0=v_main_~i~0_157, main_~n~0=v_main_~n~0_23} OutVars{main_~i~0=v_main_~i~0_157, main_~n~0=v_main_~n~0_23} AuxVars[] AssignedVars[] [2021-05-01 07:10:48,792 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:48,793 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,795 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,797 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:48,798 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:48,800 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,802 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,803 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:48,805 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,808 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,809 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,821 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,823 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,826 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,828 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,832 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,832 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:48,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:48,853 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:48,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:48,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:48,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:48,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:48,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:48,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:48,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:48,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:48,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:48,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:48,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:48,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:48,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:49,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:49,022 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:49,050 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:49,050 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:49,068 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:49,069 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:49,086 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:49,087 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:49,103 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:49,104 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:49,119 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:49,120 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:49,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:49,137 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:49,159 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:49,160 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:49,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:49,178 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:49,201 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:49,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:49,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:49,225 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:49,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:49,253 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:49,279 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:49,279 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:49,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:49,303 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:49,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:49,333 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:49,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:49,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:49,364 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:49,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2132826715] [2021-05-01 07:10:49,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2132826715] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:49,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:49,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 07:10:49,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106666254] [2021-05-01 07:10:49,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 07:10:49,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:49,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 07:10:49,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2021-05-01 07:10:49,365 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:50,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:50,321 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-05-01 07:10:50,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-01 07:10:50,321 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2021-05-01 07:10:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:50,322 INFO L225 Difference]: With dead ends: 54 [2021-05-01 07:10:50,322 INFO L226 Difference]: Without dead ends: 40 [2021-05-01 07:10:50,323 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1045.9ms TimeCoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2021-05-01 07:10:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-05-01 07:10:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-05-01 07:10:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:50,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-05-01 07:10:50,328 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2021-05-01 07:10:50,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:50,328 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-05-01 07:10:50,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:50,329 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-05-01 07:10:50,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-01 07:10:50,329 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:50,329 INFO L519 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:50,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-01 07:10:50,329 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:50,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:50,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1584663884, now seen corresponding path program 16 times [2021-05-01 07:10:50,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:50,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485045444] [2021-05-01 07:10:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:50,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:50,334 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_175 v_main_~n~0_24) InVars {main_~i~0=v_main_~i~0_175, main_~n~0=v_main_~n~0_24} OutVars{main_~i~0=v_main_~i~0_175, main_~n~0=v_main_~n~0_24} AuxVars[] AssignedVars[] [2021-05-01 07:10:50,336 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:50,338 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,340 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,342 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,344 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,346 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,349 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,349 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,353 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:50,356 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,356 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:50,359 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,361 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,362 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:50,364 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,366 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,366 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:50,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:50,380 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:50,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:50,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:50,398 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:50,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:50,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:50,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:50,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:50,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:50,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:50,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:50,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:50,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:50,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:50,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:50,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:50,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:50,510 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:50,510 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:50,524 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:50,525 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:50,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,539 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:50,567 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:50,568 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:50,583 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:50,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:50,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,603 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:50,626 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:50,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:50,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,650 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:50,673 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:50,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:50,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,694 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:50,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,736 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:50,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,792 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:50,818 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:50,819 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:50,842 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:50,842 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:50,868 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:50,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:50,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,892 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:50,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:50,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:50,923 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:50,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485045444] [2021-05-01 07:10:50,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1485045444] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:50,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:50,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 07:10:50,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741727550] [2021-05-01 07:10:50,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 07:10:50,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:50,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 07:10:50,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2021-05-01 07:10:50,924 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:52,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:52,069 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2021-05-01 07:10:52,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-01 07:10:52,069 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-05-01 07:10:52,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:52,070 INFO L225 Difference]: With dead ends: 55 [2021-05-01 07:10:52,070 INFO L226 Difference]: Without dead ends: 41 [2021-05-01 07:10:52,070 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1203.0ms TimeCoverageRelationStatistics Valid=263, Invalid=2493, Unknown=0, NotChecked=0, Total=2756 [2021-05-01 07:10:52,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-01 07:10:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-05-01 07:10:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-05-01 07:10:52,075 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2021-05-01 07:10:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:52,075 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-05-01 07:10:52,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 1.2) internal successors, (30), 24 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-05-01 07:10:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-01 07:10:52,076 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:52,076 INFO L519 BasicCegarLoop]: trace histogram [17, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:52,076 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-01 07:10:52,076 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:52,077 INFO L82 PathProgramCache]: Analyzing trace with hash 506539908, now seen corresponding path program 17 times [2021-05-01 07:10:52,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:52,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239462708] [2021-05-01 07:10:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:52,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:52,083 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_194 v_main_~n~0_25) InVars {main_~i~0=v_main_~i~0_194, main_~n~0=v_main_~n~0_25} OutVars{main_~i~0=v_main_~i~0_194, main_~n~0=v_main_~n~0_25} AuxVars[] AssignedVars[] [2021-05-01 07:10:52,084 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:52,085 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,093 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:52,095 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,095 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:52,097 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:52,099 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,101 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,103 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,105 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,107 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,109 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,110 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,112 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,113 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,115 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,116 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:52,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:52,130 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:52,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:52,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:52,159 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:52,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:52,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:52,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:52,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:52,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:52,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:52,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:52,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:52,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:52,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:52,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:52,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:52,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:52,290 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:52,291 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:52,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:52,310 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:52,323 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:52,324 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:52,338 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:52,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:52,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,354 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:52,374 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:52,374 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:52,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,391 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:52,416 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:52,419 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:52,438 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:52,439 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:52,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,459 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:52,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,483 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:52,508 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:52,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:52,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,531 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:52,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,558 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:52,586 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:52,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:52,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,611 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:52,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,641 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:52,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:52,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:52,671 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:52,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239462708] [2021-05-01 07:10:52,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [239462708] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:52,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:52,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 07:10:52,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081884979] [2021-05-01 07:10:52,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 07:10:52,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:52,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 07:10:52,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2021-05-01 07:10:52,672 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:53,760 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2021-05-01 07:10:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-01 07:10:53,760 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2021-05-01 07:10:53,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:53,761 INFO L225 Difference]: With dead ends: 56 [2021-05-01 07:10:53,761 INFO L226 Difference]: Without dead ends: 42 [2021-05-01 07:10:53,762 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 532 ImplicationChecksByTransitivity, 1182.6ms TimeCoverageRelationStatistics Valid=274, Invalid=2696, Unknown=0, NotChecked=0, Total=2970 [2021-05-01 07:10:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-01 07:10:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-05-01 07:10:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-05-01 07:10:53,766 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 37 [2021-05-01 07:10:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:53,766 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-05-01 07:10:53,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 25 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-05-01 07:10:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-05-01 07:10:53,767 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:53,767 INFO L519 BasicCegarLoop]: trace histogram [18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:53,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-01 07:10:53,767 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:53,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1444435020, now seen corresponding path program 18 times [2021-05-01 07:10:53,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:53,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140169734] [2021-05-01 07:10:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:53,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:53,776 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_214 v_main_~n~0_26) InVars {main_~i~0=v_main_~i~0_214, main_~n~0=v_main_~n~0_26} OutVars{main_~i~0=v_main_~i~0_214, main_~n~0=v_main_~n~0_26} AuxVars[] AssignedVars[] [2021-05-01 07:10:53,777 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:53,778 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,781 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,784 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:53,784 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:53,786 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:53,789 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,791 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,793 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,795 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,797 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,799 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,800 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,802 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,804 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,805 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,816 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:53,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:53,834 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:53,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:53,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:53,852 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:53,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:53,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:53,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:53,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:53,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:53,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:53,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:53,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:53,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:53,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:53,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:53,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:53,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:53,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:53,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:53,999 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:54,022 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:54,023 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:54,036 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:54,037 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:54,051 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:54,052 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:54,067 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:54,067 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:54,083 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:54,084 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:54,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,100 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:54,122 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:54,123 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:54,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,141 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:54,164 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:54,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:54,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,185 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:54,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,210 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:54,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,236 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:54,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,263 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:54,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,290 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:54,324 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:54,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:54,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,352 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:54,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,382 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:54,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:54,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:54,414 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:54,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140169734] [2021-05-01 07:10:54,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [140169734] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:54,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:54,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 07:10:54,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835586670] [2021-05-01 07:10:54,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 07:10:54,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:54,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 07:10:54,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2021-05-01 07:10:54,416 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:55,561 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2021-05-01 07:10:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-01 07:10:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2021-05-01 07:10:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:55,562 INFO L225 Difference]: With dead ends: 57 [2021-05-01 07:10:55,562 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 07:10:55,562 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1278.3ms TimeCoverageRelationStatistics Valid=285, Invalid=2907, Unknown=0, NotChecked=0, Total=3192 [2021-05-01 07:10:55,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 07:10:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-05-01 07:10:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-05-01 07:10:55,567 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 38 [2021-05-01 07:10:55,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:55,567 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-05-01 07:10:55,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-05-01 07:10:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 07:10:55,568 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:55,568 INFO L519 BasicCegarLoop]: trace histogram [19, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:55,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-01 07:10:55,568 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:55,569 INFO L82 PathProgramCache]: Analyzing trace with hash 454412420, now seen corresponding path program 19 times [2021-05-01 07:10:55,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:55,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321636289] [2021-05-01 07:10:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:55,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:55,581 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_235 v_main_~n~0_27) InVars {main_~i~0=v_main_~i~0_235, main_~n~0=v_main_~n~0_27} OutVars{main_~i~0=v_main_~i~0_235, main_~n~0=v_main_~n~0_27} AuxVars[] AssignedVars[] [2021-05-01 07:10:55,587 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:55,590 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,592 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,596 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,598 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,600 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,601 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,605 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:55,607 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,608 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:55,612 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:55,614 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,616 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,618 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,621 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:55,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:55,637 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:55,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:55,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:55,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:55,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:55,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:55,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:55,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:55,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:55,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:55,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:55,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:55,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:55,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:55,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:55,770 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:55,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:55,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,784 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:55,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,802 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:55,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,821 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:55,840 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:55,840 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:55,856 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:55,857 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:55,873 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:55,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:55,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,892 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:55,915 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:55,915 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:55,934 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:55,935 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:55,955 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:55,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:55,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,976 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:56,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,004 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:56,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,032 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:56,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,060 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:56,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,090 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:56,120 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:56,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:56,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,158 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:10:56,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,190 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:56,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:56,222 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:56,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321636289] [2021-05-01 07:10:56,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [321636289] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:56,222 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:56,222 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 07:10:56,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718017343] [2021-05-01 07:10:56,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 07:10:56,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:56,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 07:10:56,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2021-05-01 07:10:56,223 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:57,383 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-05-01 07:10:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-01 07:10:57,384 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2021-05-01 07:10:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:57,384 INFO L225 Difference]: With dead ends: 58 [2021-05-01 07:10:57,385 INFO L226 Difference]: Without dead ends: 44 [2021-05-01 07:10:57,385 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1287.5ms TimeCoverageRelationStatistics Valid=296, Invalid=3126, Unknown=0, NotChecked=0, Total=3422 [2021-05-01 07:10:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-01 07:10:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-05-01 07:10:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-05-01 07:10:57,389 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2021-05-01 07:10:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:57,389 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-05-01 07:10:57,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:57,390 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-05-01 07:10:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-01 07:10:57,390 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:57,390 INFO L519 BasicCegarLoop]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:57,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-01 07:10:57,390 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:57,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:57,390 INFO L82 PathProgramCache]: Analyzing trace with hash -171517108, now seen corresponding path program 20 times [2021-05-01 07:10:57,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:57,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [455250528] [2021-05-01 07:10:57,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:57,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:57,394 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_257 v_main_~n~0_28) InVars {main_~i~0=v_main_~i~0_257, main_~n~0=v_main_~n~0_28} OutVars{main_~i~0=v_main_~i~0_257, main_~n~0=v_main_~n~0_28} AuxVars[] AssignedVars[] [2021-05-01 07:10:57,395 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:57,398 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,399 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,401 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,403 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,405 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,407 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,407 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,410 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:57,412 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,412 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:57,414 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:57,416 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,417 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,419 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,421 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,421 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:57,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:10:57,436 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:57,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:57,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:57,455 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:57,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:57,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:57,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:57,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:57,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:57,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:57,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:57,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:57,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:57,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:57,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:57,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:57,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:57,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,569 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:10:57,591 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,591 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:57,604 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,605 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:57,619 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,620 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:57,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,657 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:57,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,685 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:57,716 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,717 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:57,743 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,743 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:57,767 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,768 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:57,787 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,787 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:57,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,808 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:57,834 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:57,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,856 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:57,883 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:57,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,908 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:57,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,938 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:57,968 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,969 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:57,996 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:57,996 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:58,023 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:58,026 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:58,055 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:58,055 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:58,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:58,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:58,085 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:58,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [455250528] [2021-05-01 07:10:58,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [455250528] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:58,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:58,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 07:10:58,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102946708] [2021-05-01 07:10:58,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 07:10:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 07:10:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2021-05-01 07:10:58,086 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:59,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:59,434 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-05-01 07:10:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-01 07:10:59,436 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2021-05-01 07:10:59,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:59,436 INFO L225 Difference]: With dead ends: 59 [2021-05-01 07:10:59,436 INFO L226 Difference]: Without dead ends: 45 [2021-05-01 07:10:59,441 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 1470.7ms TimeCoverageRelationStatistics Valid=307, Invalid=3353, Unknown=0, NotChecked=0, Total=3660 [2021-05-01 07:10:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-01 07:10:59,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-05-01 07:10:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-05-01 07:10:59,446 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 40 [2021-05-01 07:10:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:59,446 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-05-01 07:10:59,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:10:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-05-01 07:10:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-01 07:10:59,447 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:59,447 INFO L519 BasicCegarLoop]: trace histogram [21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:59,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-01 07:10:59,447 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:59,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1899504004, now seen corresponding path program 21 times [2021-05-01 07:10:59,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:59,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176129372] [2021-05-01 07:10:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:59,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:59,452 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_280 v_main_~n~0_29) InVars {main_~i~0=v_main_~i~0_280, main_~n~0=v_main_~n~0_29} OutVars{main_~i~0=v_main_~i~0_280, main_~n~0=v_main_~n~0_29} AuxVars[] AssignedVars[] [2021-05-01 07:10:59,454 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:10:59,456 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,458 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,460 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,463 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,464 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,466 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,467 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,470 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:59,472 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,472 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:59,474 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:59,475 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,477 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,479 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,481 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,481 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:10:59,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:10:59,495 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:59,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:59,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:59,514 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:10:59,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:59,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:59,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:59,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:59,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:59,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:59,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:59,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:59,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:59,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:10:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:59,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:10:59,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:10:59,649 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:10:59,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:59,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,667 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:10:59,684 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,685 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:59,700 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,702 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:59,717 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,718 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:59,734 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:59,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,751 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:59,773 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,773 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:59,792 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,792 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:10:59,812 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,812 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:59,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,832 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:59,857 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,869 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:10:59,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,897 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:10:59,932 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:10:59,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:10:59,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,965 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:10:59,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:59,994 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:00,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,024 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:00,055 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:00,055 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:00,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,082 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:00,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,114 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:00,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,147 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:00,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:00,201 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:00,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176129372] [2021-05-01 07:11:00,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1176129372] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:00,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:00,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-01 07:11:00,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957494249] [2021-05-01 07:11:00,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-01 07:11:00,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:00,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-01 07:11:00,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:11:00,203 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:01,504 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-05-01 07:11:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-01 07:11:01,505 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2021-05-01 07:11:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:01,506 INFO L225 Difference]: With dead ends: 60 [2021-05-01 07:11:01,506 INFO L226 Difference]: Without dead ends: 46 [2021-05-01 07:11:01,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 1491.7ms TimeCoverageRelationStatistics Valid=318, Invalid=3588, Unknown=0, NotChecked=0, Total=3906 [2021-05-01 07:11:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-01 07:11:01,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-05-01 07:11:01,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-05-01 07:11:01,511 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 41 [2021-05-01 07:11:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:01,511 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-05-01 07:11:01,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-05-01 07:11:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-01 07:11:01,511 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:01,511 INFO L519 BasicCegarLoop]: trace histogram [22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:01,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-01 07:11:01,512 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:01,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:01,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1676649036, now seen corresponding path program 22 times [2021-05-01 07:11:01,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:01,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149021027] [2021-05-01 07:11:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:01,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:01,516 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_304 v_main_~n~0_30) InVars {main_~i~0=v_main_~i~0_304, main_~n~0=v_main_~n~0_30} OutVars{main_~i~0=v_main_~i~0_304, main_~n~0=v_main_~n~0_30} AuxVars[] AssignedVars[] [2021-05-01 07:11:01,517 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:01,517 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,520 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:01,522 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,523 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:01,525 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:01,527 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,529 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,531 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,533 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,535 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,537 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,539 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,541 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,542 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,544 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,544 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:01,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:01,559 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:01,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:01,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:01,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:01,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:01,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:01,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:01,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:01,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:01,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:01,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:01,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:01,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:01,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:01,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:01,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:01,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,695 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:01,719 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:01,720 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:01,735 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:01,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:01,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,749 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:01,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,768 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:01,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,788 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:01,808 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:01,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:01,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,826 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:01,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,848 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:01,871 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:01,872 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:01,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,892 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:01,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,916 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:01,942 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:01,942 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:01,965 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:01,969 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:01,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,996 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:02,025 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:02,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:02,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,051 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:02,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,087 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:02,118 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:02,118 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:02,146 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:02,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:02,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,175 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:02,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,208 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:02,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:02,243 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:02,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149021027] [2021-05-01 07:11:02,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1149021027] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:02,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:02,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-01 07:11:02,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069434994] [2021-05-01 07:11:02,244 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-01 07:11:02,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:02,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-01 07:11:02,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1031, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 07:11:02,245 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:03,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:03,742 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2021-05-01 07:11:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-01 07:11:03,743 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-05-01 07:11:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:03,743 INFO L225 Difference]: With dead ends: 61 [2021-05-01 07:11:03,744 INFO L226 Difference]: Without dead ends: 47 [2021-05-01 07:11:03,745 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 1576.6ms TimeCoverageRelationStatistics Valid=285, Invalid=3875, Unknown=0, NotChecked=0, Total=4160 [2021-05-01 07:11:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-01 07:11:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2021-05-01 07:11:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-05-01 07:11:03,750 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 42 [2021-05-01 07:11:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:03,751 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-05-01 07:11:03,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-05-01 07:11:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-01 07:11:03,751 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:03,751 INFO L519 BasicCegarLoop]: trace histogram [23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:03,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-01 07:11:03,751 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash -936887676, now seen corresponding path program 23 times [2021-05-01 07:11:03,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:03,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488946229] [2021-05-01 07:11:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:03,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:03,756 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_329 v_main_~n~0_31) InVars {main_~i~0=v_main_~i~0_329, main_~n~0=v_main_~n~0_31} OutVars{main_~i~0=v_main_~i~0_329, main_~n~0=v_main_~n~0_31} AuxVars[] AssignedVars[] [2021-05-01 07:11:03,758 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:03,758 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,761 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,764 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:03,765 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:03,767 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,771 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,773 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:03,776 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,778 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,780 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,782 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,783 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,785 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,786 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,787 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:03,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:03,801 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:03,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:03,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:03,824 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:03,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:03,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:03,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:03,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:03,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:03,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:03,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:03,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:03,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:03,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:03,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:03,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:03,958 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:03,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:03,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,971 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:03,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,989 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:04,007 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,008 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:04,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,023 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:04,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,045 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:04,066 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,067 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:04,085 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,085 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:04,103 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:04,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,130 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:04,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,155 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:04,180 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:04,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,203 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:04,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,230 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:04,262 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,263 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:04,287 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,288 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:04,313 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,315 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:04,341 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,341 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:04,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,368 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:04,401 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,401 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:04,430 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:04,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:04,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,460 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:04,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,495 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:04,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:04,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:04,530 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:04,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488946229] [2021-05-01 07:11:04,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [488946229] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:04,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:04,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 07:11:04,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417188647] [2021-05-01 07:11:04,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 07:11:04,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:04,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 07:11:04,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 07:11:04,532 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:06,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:06,008 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2021-05-01 07:11:06,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-01 07:11:06,009 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2021-05-01 07:11:06,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:06,010 INFO L225 Difference]: With dead ends: 62 [2021-05-01 07:11:06,010 INFO L226 Difference]: Without dead ends: 48 [2021-05-01 07:11:06,011 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 1578.5ms TimeCoverageRelationStatistics Valid=340, Invalid=4082, Unknown=0, NotChecked=0, Total=4422 [2021-05-01 07:11:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-01 07:11:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-05-01 07:11:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2021-05-01 07:11:06,015 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2021-05-01 07:11:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:06,015 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2021-05-01 07:11:06,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 1.15625) internal successors, (37), 31 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2021-05-01 07:11:06,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-01 07:11:06,015 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:06,015 INFO L519 BasicCegarLoop]: trace histogram [24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:06,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-01 07:11:06,015 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:06,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:06,016 INFO L82 PathProgramCache]: Analyzing trace with hash -352147124, now seen corresponding path program 24 times [2021-05-01 07:11:06,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:06,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066322192] [2021-05-01 07:11:06,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:06,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:06,019 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_355 v_main_~n~0_32) InVars {main_~i~0=v_main_~i~0_355, main_~n~0=v_main_~n~0_32} OutVars{main_~i~0=v_main_~i~0_355, main_~n~0=v_main_~n~0_32} AuxVars[] AssignedVars[] [2021-05-01 07:11:06,020 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:06,022 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,024 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,026 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,028 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,030 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,032 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,032 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,035 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:06,037 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,037 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:06,039 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,041 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,043 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,044 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:06,046 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,046 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:06,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:06,061 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:06,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:06,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:06,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:06,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:06,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:06,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:06,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:06,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:06,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:06,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:06,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:06,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:06,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:06,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:06,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:06,207 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:06,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:06,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,220 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:06,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,238 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:06,256 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,257 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:06,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,272 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:06,292 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,292 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:06,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,310 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:06,328 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,328 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:06,351 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,351 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:06,371 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,371 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:06,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,392 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:06,417 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:06,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,454 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:06,483 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,484 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:06,507 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,508 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:06,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,532 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:06,562 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,562 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:06,589 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:06,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,616 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:06,649 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,650 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:06,679 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:06,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,709 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:06,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,744 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:06,780 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:06,781 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:06,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:06,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:06,813 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:06,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066322192] [2021-05-01 07:11:06,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1066322192] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:06,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:06,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 07:11:06,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259900274] [2021-05-01 07:11:06,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 07:11:06,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:06,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 07:11:06,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2021-05-01 07:11:06,814 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:08,350 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-05-01 07:11:08,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-01 07:11:08,351 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-05-01 07:11:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:08,351 INFO L225 Difference]: With dead ends: 63 [2021-05-01 07:11:08,351 INFO L226 Difference]: Without dead ends: 49 [2021-05-01 07:11:08,352 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1663.5ms TimeCoverageRelationStatistics Valid=351, Invalid=4341, Unknown=0, NotChecked=0, Total=4692 [2021-05-01 07:11:08,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-01 07:11:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-05-01 07:11:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:08,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2021-05-01 07:11:08,357 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2021-05-01 07:11:08,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:08,357 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2021-05-01 07:11:08,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2021-05-01 07:11:08,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-01 07:11:08,358 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:08,358 INFO L519 BasicCegarLoop]: trace histogram [25, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:08,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-01 07:11:08,358 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:08,358 INFO L82 PathProgramCache]: Analyzing trace with hash 594940804, now seen corresponding path program 25 times [2021-05-01 07:11:08,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:08,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51958879] [2021-05-01 07:11:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:08,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:08,364 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_382 v_main_~n~0_33) InVars {main_~i~0=v_main_~i~0_382, main_~n~0=v_main_~n~0_33} OutVars{main_~i~0=v_main_~i~0_382, main_~n~0=v_main_~n~0_33} AuxVars[] AssignedVars[] [2021-05-01 07:11:08,369 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:08,370 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,373 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,375 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:08,375 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:08,377 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:08,380 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,382 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,384 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,386 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,388 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,390 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,391 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,393 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,395 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,396 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,397 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:08,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:08,411 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:08,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:08,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:08,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:08,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:08,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:08,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:08,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:08,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:08,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:08,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:08,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:08,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:08,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:08,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:08,544 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:08,544 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:08,557 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:08,557 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:08,571 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:08,571 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:08,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,586 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:08,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,607 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:08,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,627 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:08,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,648 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:08,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,671 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:08,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,693 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:08,717 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:08,718 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:08,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,738 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:08,764 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:08,764 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:08,786 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:08,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:08,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,809 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:08,838 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:08,838 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:08,863 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:08,863 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:08,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,889 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:08,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,919 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:08,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:08,960 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:09,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,004 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:09,049 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:09,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:09,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,088 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:09,135 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:09,136 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:09,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,176 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:09,224 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:09,225 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:09,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:09,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:09,267 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:09,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51958879] [2021-05-01 07:11:09,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [51958879] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:09,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:09,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-01 07:11:09,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793318123] [2021-05-01 07:11:09,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-01 07:11:09,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:09,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-01 07:11:09,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1207, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 07:11:09,269 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:10,875 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2021-05-01 07:11:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-01 07:11:10,876 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2021-05-01 07:11:10,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:10,877 INFO L225 Difference]: With dead ends: 64 [2021-05-01 07:11:10,877 INFO L226 Difference]: Without dead ends: 50 [2021-05-01 07:11:10,877 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1848.2ms TimeCoverageRelationStatistics Valid=362, Invalid=4608, Unknown=0, NotChecked=0, Total=4970 [2021-05-01 07:11:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-01 07:11:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-05-01 07:11:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-05-01 07:11:10,881 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 45 [2021-05-01 07:11:10,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:10,881 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-05-01 07:11:10,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-05-01 07:11:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-01 07:11:10,882 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:10,882 INFO L519 BasicCegarLoop]: trace histogram [26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:10,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-01 07:11:10,882 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:10,882 INFO L82 PathProgramCache]: Analyzing trace with hash -110104500, now seen corresponding path program 26 times [2021-05-01 07:11:10,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:10,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117781273] [2021-05-01 07:11:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:10,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:10,888 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_410 v_main_~n~0_34) InVars {main_~i~0=v_main_~i~0_410, main_~n~0=v_main_~n~0_34} OutVars{main_~i~0=v_main_~i~0_410, main_~n~0=v_main_~n~0_34} AuxVars[] AssignedVars[] [2021-05-01 07:11:10,904 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:10,907 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,909 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,912 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,914 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,916 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,918 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,919 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,921 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,924 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:10,924 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:10,926 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,928 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,930 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:10,931 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,933 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,934 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:10,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:10,948 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:10,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:10,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:10,969 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:10,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:10,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:10,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:10,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:10,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:10,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:11,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:11,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:11,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:11,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:11,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:11,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:11,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:11,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:11,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,092 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:11,117 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:11,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,133 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:11,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,154 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:11,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,177 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:11,201 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:11,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,221 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:11,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,247 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:11,274 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,275 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:11,297 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,298 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:11,322 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:11,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,347 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:11,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,377 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:11,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,404 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:11,431 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,432 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:11,462 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,463 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:11,494 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,495 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:11,528 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,529 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:11,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,562 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:11,603 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:11,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,641 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:11,680 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,681 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:11,717 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,718 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:11,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,756 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:11,803 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,804 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:11,844 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:11,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:11,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:11,885 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:11,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117781273] [2021-05-01 07:11:11,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2117781273] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:11,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:11,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-01 07:11:11,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375743592] [2021-05-01 07:11:11,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-01 07:11:11,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:11,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-01 07:11:11,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2021-05-01 07:11:11,887 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:13,576 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2021-05-01 07:11:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-01 07:11:13,576 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2021-05-01 07:11:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:13,577 INFO L225 Difference]: With dead ends: 65 [2021-05-01 07:11:13,577 INFO L226 Difference]: Without dead ends: 51 [2021-05-01 07:11:13,577 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 1983.2ms TimeCoverageRelationStatistics Valid=323, Invalid=4933, Unknown=0, NotChecked=0, Total=5256 [2021-05-01 07:11:13,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-01 07:11:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-05-01 07:11:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-05-01 07:11:13,581 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 46 [2021-05-01 07:11:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:13,581 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-05-01 07:11:13,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 34 states have internal predecessors, (40), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:13,582 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-05-01 07:11:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 07:11:13,582 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:13,582 INFO L519 BasicCegarLoop]: trace histogram [27, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:13,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-01 07:11:13,582 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:13,582 INFO L82 PathProgramCache]: Analyzing trace with hash -491672444, now seen corresponding path program 27 times [2021-05-01 07:11:13,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:13,582 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956173309] [2021-05-01 07:11:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:13,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:13,589 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_439 v_main_~n~0_35) InVars {main_~i~0=v_main_~i~0_439, main_~n~0=v_main_~n~0_35} OutVars{main_~i~0=v_main_~i~0_439, main_~n~0=v_main_~n~0_35} AuxVars[] AssignedVars[] [2021-05-01 07:11:13,591 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:13,592 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,595 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:13,598 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,598 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:13,600 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:13,603 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,606 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,608 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,611 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,613 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,615 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,616 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,618 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,622 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,622 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:13,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:13,637 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:13,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:13,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:13,654 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:13,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:13,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:13,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:13,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:13,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:13,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:13,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:13,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:13,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:13,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:13,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:13,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:13,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:13,782 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:13,786 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:13,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,799 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:13,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,825 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:13,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,852 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:13,879 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:13,879 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:13,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,895 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:13,917 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:13,917 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:13,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,935 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:13,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,963 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:13,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,988 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:14,012 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,013 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:14,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,034 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:14,061 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,068 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:14,091 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,091 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:14,123 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,124 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:14,157 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,158 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:14,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,183 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:14,214 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,218 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:14,245 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:14,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,273 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:14,307 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,307 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:14,337 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,337 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:14,368 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:14,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,406 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:14,443 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:14,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,477 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:14,516 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:14,516 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:14,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:14,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:14,552 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:14,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956173309] [2021-05-01 07:11:14,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1956173309] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:14,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:14,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-05-01 07:11:14,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366679728] [2021-05-01 07:11:14,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-01 07:11:14,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:14,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-01 07:11:14,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 07:11:14,553 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:16,494 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-05-01 07:11:16,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-01 07:11:16,494 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2021-05-01 07:11:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:16,495 INFO L225 Difference]: With dead ends: 66 [2021-05-01 07:11:16,495 INFO L226 Difference]: Without dead ends: 52 [2021-05-01 07:11:16,496 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 2035.0ms TimeCoverageRelationStatistics Valid=384, Invalid=5166, Unknown=0, NotChecked=0, Total=5550 [2021-05-01 07:11:16,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-01 07:11:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-05-01 07:11:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2021-05-01 07:11:16,501 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2021-05-01 07:11:16,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:16,501 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2021-05-01 07:11:16,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 35 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:16,502 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2021-05-01 07:11:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-01 07:11:16,502 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:16,502 INFO L519 BasicCegarLoop]: trace histogram [28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:16,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-01 07:11:16,502 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:16,503 INFO L82 PathProgramCache]: Analyzing trace with hash 564623180, now seen corresponding path program 28 times [2021-05-01 07:11:16,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:16,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691660149] [2021-05-01 07:11:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:16,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:16,506 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_469 v_main_~n~0_36) InVars {main_~i~0=v_main_~i~0_469, main_~n~0=v_main_~n~0_36} OutVars{main_~i~0=v_main_~i~0_469, main_~n~0=v_main_~n~0_36} AuxVars[] AssignedVars[] [2021-05-01 07:11:16,508 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:16,510 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,511 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,515 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,517 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,519 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,519 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,523 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:16,525 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,526 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:16,529 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,530 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,532 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,534 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:16,536 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,536 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:16,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:16,551 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:16,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:16,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:16,569 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:16,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:16,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:16,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:16,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:16,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:16,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:16,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:16,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:16,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:16,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:16,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:16,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:16,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:16,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:16,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,695 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:16,717 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:16,717 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:16,731 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:16,731 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:16,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,746 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:16,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,769 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:16,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,789 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:16,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,810 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:16,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,832 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:16,856 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:16,856 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:16,876 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:16,877 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:16,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:16,897 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:16,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,918 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:16,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,945 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:16,972 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:16,973 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:16,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:16,996 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:17,026 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:17,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,052 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:17,084 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,084 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:17,111 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:17,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,140 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:17,174 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,175 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:17,205 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,206 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:17,237 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,237 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:17,269 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:17,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,302 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:17,340 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,341 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:17,374 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,375 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:17,410 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:17,412 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:17,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:17,448 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:17,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691660149] [2021-05-01 07:11:17,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [691660149] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:17,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:17,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-01 07:11:17,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326609280] [2021-05-01 07:11:17,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-01 07:11:17,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:17,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-01 07:11:17,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2021-05-01 07:11:17,449 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:19,320 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-05-01 07:11:19,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-01 07:11:19,321 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2021-05-01 07:11:19,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:19,321 INFO L225 Difference]: With dead ends: 67 [2021-05-01 07:11:19,321 INFO L226 Difference]: Without dead ends: 53 [2021-05-01 07:11:19,322 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 2053.8ms TimeCoverageRelationStatistics Valid=395, Invalid=5457, Unknown=0, NotChecked=0, Total=5852 [2021-05-01 07:11:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-05-01 07:11:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-05-01 07:11:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 45 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-05-01 07:11:19,327 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 48 [2021-05-01 07:11:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:19,328 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-05-01 07:11:19,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 37 states have (on average 1.135135135135135) internal successors, (42), 36 states have internal predecessors, (42), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:19,328 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-05-01 07:11:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-01 07:11:19,328 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:19,328 INFO L519 BasicCegarLoop]: trace histogram [29, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:19,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-01 07:11:19,328 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:19,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1049950844, now seen corresponding path program 29 times [2021-05-01 07:11:19,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:19,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029045652] [2021-05-01 07:11:19,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:19,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:19,332 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_500 v_main_~n~0_37) InVars {main_~i~0=v_main_~i~0_500, main_~n~0=v_main_~n~0_37} OutVars{main_~i~0=v_main_~i~0_500, main_~n~0=v_main_~n~0_37} AuxVars[] AssignedVars[] [2021-05-01 07:11:19,333 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:19,334 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,337 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:19,339 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,340 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:19,345 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,347 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,348 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:19,350 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,353 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,355 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,356 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,358 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,360 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,362 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,363 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,364 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:19,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:19,378 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:19,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:19,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:19,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:19,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:19,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:19,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:19,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:19,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:19,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:19,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:19,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:19,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:19,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:19,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:19,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:19,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,514 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:19,536 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,536 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:19,549 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,550 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:19,564 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,565 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:19,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,579 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:19,599 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,600 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:19,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,623 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:19,654 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:19,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,684 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:19,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,707 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:19,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,731 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:19,757 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:19,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,785 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:19,812 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,812 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:19,836 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,839 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:19,863 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,864 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:19,895 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:19,896 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:19,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,921 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:19,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,953 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:19,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,985 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:20,018 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:20,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:20,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:20,048 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:20,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:20,082 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:20,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:20,118 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:20,154 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:20,155 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:20,187 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:20,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:20,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:20,232 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:20,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:20,275 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:20,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:20,315 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:20,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:20,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:20,356 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:20,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029045652] [2021-05-01 07:11:20,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2029045652] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:20,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:20,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-01 07:11:20,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684569483] [2021-05-01 07:11:20,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-01 07:11:20,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:20,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-01 07:11:20,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1526, Unknown=0, NotChecked=0, Total=1640 [2021-05-01 07:11:20,357 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:22,271 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2021-05-01 07:11:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-01 07:11:22,272 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2021-05-01 07:11:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:22,272 INFO L225 Difference]: With dead ends: 68 [2021-05-01 07:11:22,272 INFO L226 Difference]: Without dead ends: 54 [2021-05-01 07:11:22,273 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 2151.1ms TimeCoverageRelationStatistics Valid=350, Invalid=5812, Unknown=0, NotChecked=0, Total=6162 [2021-05-01 07:11:22,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-01 07:11:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-05-01 07:11:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-05-01 07:11:22,279 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 49 [2021-05-01 07:11:22,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:22,280 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-05-01 07:11:22,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 37 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:22,280 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-05-01 07:11:22,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-01 07:11:22,280 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:22,280 INFO L519 BasicCegarLoop]: trace histogram [30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:22,280 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-01 07:11:22,281 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:22,281 INFO L82 PathProgramCache]: Analyzing trace with hash 437861964, now seen corresponding path program 30 times [2021-05-01 07:11:22,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:22,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491408790] [2021-05-01 07:11:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:22,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:22,285 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_532 v_main_~n~0_38) InVars {main_~i~0=v_main_~i~0_532, main_~n~0=v_main_~n~0_38} OutVars{main_~i~0=v_main_~i~0_532, main_~n~0=v_main_~n~0_38} AuxVars[] AssignedVars[] [2021-05-01 07:11:22,287 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:22,289 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,292 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,295 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,297 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,299 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,301 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,302 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,305 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,308 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:22,308 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:22,310 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:22,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,317 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,319 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,322 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,322 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:22,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:22,340 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:22,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:22,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:22,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:22,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:22,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:22,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:22,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:22,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:22,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:22,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:22,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:22,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:22,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:22,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:22,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:22,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,478 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:22,500 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:22,501 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:22,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,514 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:22,533 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:22,533 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:22,548 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:22,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:22,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,565 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:22,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,588 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:22,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,621 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:22,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,650 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:22,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,676 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:22,700 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:22,701 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:22,722 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:22,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:22,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,744 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:22,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,779 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:22,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,807 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:22,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,836 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:22,866 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:22,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:22,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,893 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:22,924 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:22,925 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:22,957 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:22,958 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:22,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:22,986 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:23,021 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:23,021 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:23,052 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:23,052 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:23,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:23,084 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:23,121 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:23,122 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:23,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:23,155 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:23,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:23,194 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:23,233 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:23,234 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:23,269 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:23,270 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:23,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:23,306 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:23,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:23,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:23,349 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:23,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491408790] [2021-05-01 07:11:23,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1491408790] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:23,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:23,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-01 07:11:23,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97507229] [2021-05-01 07:11:23,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-01 07:11:23,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:23,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-01 07:11:23,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1607, Unknown=0, NotChecked=0, Total=1722 [2021-05-01 07:11:23,350 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:25,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:25,513 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2021-05-01 07:11:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-01 07:11:25,513 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2021-05-01 07:11:25,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:25,514 INFO L225 Difference]: With dead ends: 69 [2021-05-01 07:11:25,514 INFO L226 Difference]: Without dead ends: 55 [2021-05-01 07:11:25,515 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 2304.6ms TimeCoverageRelationStatistics Valid=357, Invalid=6123, Unknown=0, NotChecked=0, Total=6480 [2021-05-01 07:11:25,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-01 07:11:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-05-01 07:11:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2021-05-01 07:11:25,521 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 50 [2021-05-01 07:11:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:25,521 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2021-05-01 07:11:25,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 38 states have internal predecessors, (44), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2021-05-01 07:11:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-01 07:11:25,522 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:25,522 INFO L519 BasicCegarLoop]: trace histogram [31, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:25,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-01 07:11:25,522 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:25,522 INFO L82 PathProgramCache]: Analyzing trace with hash -684581244, now seen corresponding path program 31 times [2021-05-01 07:11:25,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:25,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753729224] [2021-05-01 07:11:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:25,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:25,527 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_565 v_main_~n~0_39) InVars {main_~i~0=v_main_~i~0_565, main_~n~0=v_main_~n~0_39} OutVars{main_~i~0=v_main_~i~0_565, main_~n~0=v_main_~n~0_39} AuxVars[] AssignedVars[] [2021-05-01 07:11:25,530 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:25,531 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,535 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:25,537 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,538 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:25,541 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,543 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,546 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,548 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:25,551 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,554 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,555 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,557 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,559 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,561 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,562 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,563 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:25,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:25,578 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:25,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:25,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:25,596 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:25,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:25,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:25,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:25,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:25,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:25,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:25,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:25,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:25,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:25,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:25,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:25,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,723 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:25,746 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:25,747 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:25,761 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:25,762 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:25,777 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:25,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:25,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,794 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:25,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,816 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:25,838 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:25,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:25,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,858 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:25,882 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:25,882 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:25,902 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:25,903 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:25,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,924 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:25,951 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:25,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:25,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:25,974 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:26,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,002 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:26,032 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:26,033 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:26,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,058 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:26,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,089 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:26,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,121 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:26,154 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:26,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:26,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,184 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:26,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,218 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:26,253 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:26,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:26,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,289 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:26,326 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:26,326 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:26,359 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:26,360 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:26,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,393 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:26,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,433 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:26,487 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:26,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:26,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,523 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:26,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,564 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:26,607 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:26,608 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:26,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:26,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:26,646 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:26,646 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753729224] [2021-05-01 07:11:26,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [753729224] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:26,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:26,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-01 07:11:26,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323452604] [2021-05-01 07:11:26,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-01 07:11:26,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:26,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-01 07:11:26,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 07:11:26,647 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:28,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:28,766 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2021-05-01 07:11:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-01 07:11:28,767 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2021-05-01 07:11:28,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:28,767 INFO L225 Difference]: With dead ends: 70 [2021-05-01 07:11:28,767 INFO L226 Difference]: Without dead ends: 56 [2021-05-01 07:11:28,768 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1141 ImplicationChecksByTransitivity, 2344.1ms TimeCoverageRelationStatistics Valid=428, Invalid=6378, Unknown=0, NotChecked=0, Total=6806 [2021-05-01 07:11:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-01 07:11:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-05-01 07:11:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2021-05-01 07:11:28,774 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2021-05-01 07:11:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:28,774 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2021-05-01 07:11:28,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 40 states have (on average 1.125) internal successors, (45), 39 states have internal predecessors, (45), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2021-05-01 07:11:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-01 07:11:28,774 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:28,774 INFO L519 BasicCegarLoop]: trace histogram [32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:28,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-01 07:11:28,774 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:28,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1120582324, now seen corresponding path program 32 times [2021-05-01 07:11:28,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:28,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069116259] [2021-05-01 07:11:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:28,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:28,778 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_599 v_main_~n~0_40) InVars {main_~i~0=v_main_~i~0_599, main_~n~0=v_main_~n~0_40} OutVars{main_~i~0=v_main_~i~0_599, main_~n~0=v_main_~n~0_40} AuxVars[] AssignedVars[] [2021-05-01 07:11:28,780 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:28,782 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,784 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,786 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,789 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,790 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,792 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,793 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,795 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,797 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:28,798 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:28,800 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:28,802 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,804 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,805 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,807 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,808 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:28,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:28,822 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:28,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:28,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:28,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:28,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:28,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:28,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:28,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:28,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:28,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:28,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:28,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:28,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:28,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:28,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:28,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:28,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:28,980 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:28,981 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:28,998 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:28,999 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:29,018 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,019 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:29,040 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,041 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:29,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,062 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:29,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,091 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:29,122 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,123 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:29,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,149 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:29,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,182 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:29,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,211 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:29,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,236 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:29,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,262 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:29,289 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:29,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,313 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:29,342 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:29,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,372 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:29,403 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,404 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:29,430 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:29,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,458 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:29,492 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:29,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,522 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:29,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,557 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:29,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,598 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:29,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,634 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:29,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,671 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:29,709 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,710 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:29,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,744 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:29,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,783 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:29,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,824 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:29,866 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:29,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,905 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:29,949 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:29,949 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:29,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:29,990 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:29,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069116259] [2021-05-01 07:11:29,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1069116259] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:29,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:29,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-01 07:11:29,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846927067] [2021-05-01 07:11:29,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-01 07:11:29,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:29,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-01 07:11:29,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1739, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 07:11:29,991 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:32,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:32,185 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2021-05-01 07:11:32,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-01 07:11:32,185 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-05-01 07:11:32,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:32,186 INFO L225 Difference]: With dead ends: 71 [2021-05-01 07:11:32,186 INFO L226 Difference]: Without dead ends: 57 [2021-05-01 07:11:32,187 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 2483.6ms TimeCoverageRelationStatistics Valid=439, Invalid=6701, Unknown=0, NotChecked=0, Total=7140 [2021-05-01 07:11:32,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-01 07:11:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-05-01 07:11:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:32,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-05-01 07:11:32,192 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2021-05-01 07:11:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:32,192 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-05-01 07:11:32,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 40 states have internal predecessors, (46), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-05-01 07:11:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-01 07:11:32,192 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:32,192 INFO L519 BasicCegarLoop]: trace histogram [33, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:32,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-01 07:11:32,192 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1751713916, now seen corresponding path program 33 times [2021-05-01 07:11:32,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:32,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470613626] [2021-05-01 07:11:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:32,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:32,197 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_634 v_main_~n~0_41) InVars {main_~i~0=v_main_~i~0_634, main_~n~0=v_main_~n~0_41} OutVars{main_~i~0=v_main_~i~0_634, main_~n~0=v_main_~n~0_41} AuxVars[] AssignedVars[] [2021-05-01 07:11:32,198 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:32,199 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,202 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,205 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:32,205 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:32,207 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,209 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,211 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:32,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,215 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,217 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,219 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,221 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,222 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,224 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,226 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,226 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:32,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:32,241 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:32,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:32,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:32,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:32,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:32,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:32,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:32,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:32,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:32,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:32,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:32,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:32,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:32,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:32,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:32,391 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:32,392 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:32,407 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:32,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,425 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:32,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,449 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:32,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,469 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:32,490 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,490 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:32,508 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,508 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:32,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,527 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:32,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,557 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:32,582 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,582 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:32,603 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,603 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:32,625 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:32,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,648 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:32,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,676 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:32,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,704 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:32,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,734 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:32,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,764 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:32,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,796 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:32,829 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:32,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,862 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:32,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:32,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:32,927 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:32,963 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,964 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:32,996 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:32,997 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:33,030 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:33,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:33,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:33,064 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:33,104 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:33,104 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:33,140 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:33,140 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:33,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:33,177 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:33,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:33,219 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:33,262 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:33,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:33,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:33,313 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:33,359 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:33,359 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:33,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:33,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:33,400 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:33,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470613626] [2021-05-01 07:11:33,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [470613626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:33,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:33,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-05-01 07:11:33,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928574951] [2021-05-01 07:11:33,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-01 07:11:33,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:33,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-01 07:11:33,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1823, Unknown=0, NotChecked=0, Total=1980 [2021-05-01 07:11:33,401 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:35,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:35,736 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2021-05-01 07:11:35,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-01 07:11:35,736 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2021-05-01 07:11:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:35,737 INFO L225 Difference]: With dead ends: 72 [2021-05-01 07:11:35,737 INFO L226 Difference]: Without dead ends: 58 [2021-05-01 07:11:35,737 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 2540.8ms TimeCoverageRelationStatistics Valid=450, Invalid=7032, Unknown=0, NotChecked=0, Total=7482 [2021-05-01 07:11:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-01 07:11:35,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-05-01 07:11:35,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 50 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:35,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2021-05-01 07:11:35,744 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 53 [2021-05-01 07:11:35,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:35,744 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2021-05-01 07:11:35,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 41 states have internal predecessors, (47), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2021-05-01 07:11:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-01 07:11:35,744 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:35,744 INFO L519 BasicCegarLoop]: trace histogram [34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:35,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-01 07:11:35,745 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:35,745 INFO L82 PathProgramCache]: Analyzing trace with hash 158043212, now seen corresponding path program 34 times [2021-05-01 07:11:35,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:35,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308071662] [2021-05-01 07:11:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:35,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:35,749 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_670 v_main_~n~0_42) InVars {main_~i~0=v_main_~i~0_670, main_~n~0=v_main_~n~0_42} OutVars{main_~i~0=v_main_~i~0_670, main_~n~0=v_main_~n~0_42} AuxVars[] AssignedVars[] [2021-05-01 07:11:35,750 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:35,751 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,754 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,756 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:35,757 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:35,758 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:35,761 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,763 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,765 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,767 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,771 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,773 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,774 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,776 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,778 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,778 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:35,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:35,794 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:35,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:35,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:35,811 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:35,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:35,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:35,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:35,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:35,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:35,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:35,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:35,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:35,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:35,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:35,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:35,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:35,940 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:35,940 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:35,953 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:35,954 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:35,967 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:35,968 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:35,983 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:35,983 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:35,999 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:35,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:36,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,016 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:36,038 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,038 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:36,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,058 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:36,082 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:36,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,103 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:36,129 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,130 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:36,156 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,156 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:36,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,179 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:36,207 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,208 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:36,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,232 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:36,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,262 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:36,293 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,294 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:36,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,322 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:36,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,355 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:36,399 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:36,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,430 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:36,465 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:36,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,497 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:36,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,535 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:36,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,573 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:36,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,612 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:36,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,651 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:36,694 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,695 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:36,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,731 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:36,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,780 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:36,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,823 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:36,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,867 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:36,912 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:36,913 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:36,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,954 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:37,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:37,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:37,001 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:37,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308071662] [2021-05-01 07:11:37,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1308071662] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:37,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:37,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-01 07:11:37,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461253096] [2021-05-01 07:11:37,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-01 07:11:37,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:37,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-01 07:11:37,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1909, Unknown=0, NotChecked=0, Total=2070 [2021-05-01 07:11:37,002 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:39,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:39,473 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2021-05-01 07:11:39,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-01 07:11:39,473 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 54 [2021-05-01 07:11:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:39,474 INFO L225 Difference]: With dead ends: 73 [2021-05-01 07:11:39,474 INFO L226 Difference]: Without dead ends: 59 [2021-05-01 07:11:39,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 2657.7ms TimeCoverageRelationStatistics Valid=461, Invalid=7371, Unknown=0, NotChecked=0, Total=7832 [2021-05-01 07:11:39,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-01 07:11:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-05-01 07:11:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.04) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2021-05-01 07:11:39,488 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 54 [2021-05-01 07:11:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:39,488 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2021-05-01 07:11:39,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 42 states have internal predecessors, (48), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:39,488 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2021-05-01 07:11:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 07:11:39,488 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:39,489 INFO L519 BasicCegarLoop]: trace histogram [35, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:39,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-01 07:11:39,489 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:39,489 INFO L82 PathProgramCache]: Analyzing trace with hash -769027964, now seen corresponding path program 35 times [2021-05-01 07:11:39,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:39,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570233321] [2021-05-01 07:11:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:39,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:39,494 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_707 v_main_~n~0_43) InVars {main_~i~0=v_main_~i~0_707, main_~n~0=v_main_~n~0_43} OutVars{main_~i~0=v_main_~i~0_707, main_~n~0=v_main_~n~0_43} AuxVars[] AssignedVars[] [2021-05-01 07:11:39,496 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:39,499 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,501 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,504 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,506 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,508 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,510 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,511 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,517 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:39,517 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:39,520 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:39,522 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,525 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,527 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,529 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,530 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:39,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:39,549 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:39,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:39,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:39,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:39,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:39,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:39,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:39,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:39,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:39,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:39,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:39,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:39,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:39,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:39,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:39,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:39,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,704 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:39,726 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:39,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:39,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,741 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:39,759 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:39,760 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:39,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,775 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:39,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,795 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:39,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,816 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:39,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,838 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:39,862 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:39,862 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:39,881 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:39,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:39,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,902 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:39,931 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:39,931 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:39,953 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:39,954 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:39,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:39,976 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:40,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,005 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:40,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,034 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:40,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,063 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:40,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,094 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:40,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,126 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:40,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,159 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:40,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,193 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:40,227 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,228 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:40,259 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,260 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:40,293 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,294 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:40,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,331 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:40,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,368 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:40,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,407 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:40,447 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,448 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:40,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,483 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:40,525 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,526 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:40,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,564 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:40,612 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,612 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:40,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,653 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:40,694 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,694 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:40,736 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:40,737 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:40,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:40,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:40,779 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:40,779 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570233321] [2021-05-01 07:11:40,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [570233321] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:40,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:40,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-05-01 07:11:40,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423210364] [2021-05-01 07:11:40,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-01 07:11:40,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:40,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-01 07:11:40,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2030, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 07:11:40,780 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:43,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:43,338 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2021-05-01 07:11:43,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-01 07:11:43,339 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2021-05-01 07:11:43,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:43,340 INFO L225 Difference]: With dead ends: 74 [2021-05-01 07:11:43,340 INFO L226 Difference]: Without dead ends: 60 [2021-05-01 07:11:43,341 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 2766.4ms TimeCoverageRelationStatistics Valid=404, Invalid=7786, Unknown=0, NotChecked=0, Total=8190 [2021-05-01 07:11:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-01 07:11:43,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-05-01 07:11:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2021-05-01 07:11:43,345 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2021-05-01 07:11:43,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:43,346 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2021-05-01 07:11:43,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 43 states have internal predecessors, (49), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2021-05-01 07:11:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-01 07:11:43,346 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:43,346 INFO L519 BasicCegarLoop]: trace histogram [36, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:43,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-01 07:11:43,346 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:43,346 INFO L82 PathProgramCache]: Analyzing trace with hash 556536652, now seen corresponding path program 36 times [2021-05-01 07:11:43,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:43,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622430425] [2021-05-01 07:11:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:43,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:43,351 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_745 v_main_~n~0_44) InVars {main_~i~0=v_main_~i~0_745, main_~n~0=v_main_~n~0_44} OutVars{main_~i~0=v_main_~i~0_745, main_~n~0=v_main_~n~0_44} AuxVars[] AssignedVars[] [2021-05-01 07:11:43,352 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:43,353 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,358 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:43,360 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,360 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:43,362 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:43,367 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,369 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,371 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,373 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,375 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,377 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,379 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,381 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,383 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,384 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,385 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:43,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:43,400 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:43,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:43,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:43,418 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:43,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:43,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:43,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:43,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:43,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:43,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:43,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:43,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:43,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:43,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:43,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:43,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:43,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:43,558 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:43,559 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:43,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,576 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:43,595 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,595 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:43,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,611 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:43,631 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:43,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,649 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:43,671 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,680 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:43,704 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,705 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:43,730 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:43,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,757 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:43,790 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:43,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,819 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:43,851 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:43,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,875 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:43,905 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:43,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,931 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:43,962 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:43,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:43,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:43,990 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:44,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,028 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:44,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,062 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:44,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,096 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:44,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,132 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:44,169 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,170 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:44,202 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:44,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,236 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:44,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,275 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:44,316 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,316 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:44,352 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:44,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,391 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:44,433 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,434 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:44,473 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,474 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:44,513 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,514 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:44,555 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:44,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,597 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:44,645 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:44,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:44,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,689 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:44,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:44,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:44,737 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:44,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622430425] [2021-05-01 07:11:44,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [622430425] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:44,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:44,738 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-01 07:11:44,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501788137] [2021-05-01 07:11:44,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-01 07:11:44,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:44,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-01 07:11:44,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2087, Unknown=0, NotChecked=0, Total=2256 [2021-05-01 07:11:44,739 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:47,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:47,358 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2021-05-01 07:11:47,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-01 07:11:47,359 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2021-05-01 07:11:47,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:47,359 INFO L225 Difference]: With dead ends: 75 [2021-05-01 07:11:47,360 INFO L226 Difference]: Without dead ends: 61 [2021-05-01 07:11:47,360 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 2891.5ms TimeCoverageRelationStatistics Valid=483, Invalid=8073, Unknown=0, NotChecked=0, Total=8556 [2021-05-01 07:11:47,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-05-01 07:11:47,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-05-01 07:11:47,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-05-01 07:11:47,367 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 56 [2021-05-01 07:11:47,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:47,367 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-05-01 07:11:47,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 44 states have internal predecessors, (50), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:47,367 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-05-01 07:11:47,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-01 07:11:47,367 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:47,368 INFO L519 BasicCegarLoop]: trace histogram [37, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:47,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-01 07:11:47,368 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:47,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1300633212, now seen corresponding path program 37 times [2021-05-01 07:11:47,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:47,368 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686793765] [2021-05-01 07:11:47,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:47,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:47,373 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_784 v_main_~n~0_45) InVars {main_~i~0=v_main_~i~0_784, main_~n~0=v_main_~n~0_45} OutVars{main_~i~0=v_main_~i~0_784, main_~n~0=v_main_~n~0_45} AuxVars[] AssignedVars[] [2021-05-01 07:11:47,374 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:47,377 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,379 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,381 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,383 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,386 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,388 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,389 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,392 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:47,395 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,395 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:47,398 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,400 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:47,402 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,404 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,407 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,407 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:47,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:11:47,423 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:47,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:47,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:47,439 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:47,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:47,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:47,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:47,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:47,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:47,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:47,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:47,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:47,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:47,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:47,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:47,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:47,570 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:11:47,571 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:47,584 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:47,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:47,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,598 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:47,618 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:47,619 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:47,635 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:47,635 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:47,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:47,653 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:47,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,671 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:47,694 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:47,696 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:47,716 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:47,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:47,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,737 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:47,764 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:47,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:47,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,787 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:47,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,815 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:47,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,845 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:47,875 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:47,876 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:47,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,918 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:47,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:47,959 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:48,002 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,002 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:48,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,040 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:48,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,075 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:48,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,118 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:48,154 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,154 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:48,186 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:48,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,220 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:48,259 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:48,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,294 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:48,335 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,336 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:48,372 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,373 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:48,410 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,411 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:48,449 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,450 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:48,493 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,494 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:48,534 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:48,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,576 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:48,622 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:48,623 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:48,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,665 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:48,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,714 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:48,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,763 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:48,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:48,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:48,813 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:48,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1686793765] [2021-05-01 07:11:48,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1686793765] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:48,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:48,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-05-01 07:11:48,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141409993] [2021-05-01 07:11:48,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-01 07:11:48,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:48,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-01 07:11:48,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=2179, Unknown=0, NotChecked=0, Total=2352 [2021-05-01 07:11:48,814 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:51,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:51,646 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2021-05-01 07:11:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-01 07:11:51,646 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 57 [2021-05-01 07:11:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:51,647 INFO L225 Difference]: With dead ends: 76 [2021-05-01 07:11:51,647 INFO L226 Difference]: Without dead ends: 62 [2021-05-01 07:11:51,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 3013.6ms TimeCoverageRelationStatistics Valid=494, Invalid=8436, Unknown=0, NotChecked=0, Total=8930 [2021-05-01 07:11:51,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-01 07:11:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-05-01 07:11:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-05-01 07:11:51,653 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 57 [2021-05-01 07:11:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:51,653 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-05-01 07:11:51,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 45 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-05-01 07:11:51,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-01 07:11:51,654 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:51,654 INFO L519 BasicCegarLoop]: trace histogram [38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:51,654 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-01 07:11:51,654 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:51,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1256643148, now seen corresponding path program 38 times [2021-05-01 07:11:51,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:51,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037076003] [2021-05-01 07:11:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:51,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:51,668 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_824 v_main_~n~0_46) InVars {main_~i~0=v_main_~i~0_824, main_~n~0=v_main_~n~0_46} OutVars{main_~i~0=v_main_~i~0_824, main_~n~0=v_main_~n~0_46} AuxVars[] AssignedVars[] [2021-05-01 07:11:51,669 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:51,672 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,675 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,677 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,679 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,681 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,683 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,684 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,687 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,690 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:51,690 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:51,693 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:51,695 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,697 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,699 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,701 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,701 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:51,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:51,717 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:51,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:51,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:51,733 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:51,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:51,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:51,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:51,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:51,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:51,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:51,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:51,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:51,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:51,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:51,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:51,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:51,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,866 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:51,894 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:51,895 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:51,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,908 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:51,927 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:51,928 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:51,944 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:51,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:51,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,963 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:51,985 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:51,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:52,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,003 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:52,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,027 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:52,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,052 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:52,077 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:52,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,099 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:52,134 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,134 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:52,157 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:52,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,182 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:52,212 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:52,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,238 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:52,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,270 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:52,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,302 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:52,336 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,336 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:52,366 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,367 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:52,397 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,398 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:52,431 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,432 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:52,465 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,465 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:52,499 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,499 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:52,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,533 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:52,573 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,574 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:52,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,609 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:52,651 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,652 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:52,690 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,690 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:52,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,729 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:52,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,789 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:52,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,844 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:52,891 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,891 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:52,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:52,933 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:52,982 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:52,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:53,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:53,030 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:53,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:53,079 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:53,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:53,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:53,130 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:53,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037076003] [2021-05-01 07:11:53,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1037076003] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:53,131 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:53,131 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-01 07:11:53,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139388867] [2021-05-01 07:11:53,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-01 07:11:53,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:53,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-01 07:11:53,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=2309, Unknown=0, NotChecked=0, Total=2450 [2021-05-01 07:11:53,131 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:56,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:56,087 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2021-05-01 07:11:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-01 07:11:56,088 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-05-01 07:11:56,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:56,089 INFO L225 Difference]: With dead ends: 77 [2021-05-01 07:11:56,089 INFO L226 Difference]: Without dead ends: 63 [2021-05-01 07:11:56,089 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 3143.1ms TimeCoverageRelationStatistics Valid=431, Invalid=8881, Unknown=0, NotChecked=0, Total=9312 [2021-05-01 07:11:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-05-01 07:11:56,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-05-01 07:11:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 54 states have (on average 1.037037037037037) internal successors, (56), 55 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2021-05-01 07:11:56,095 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 58 [2021-05-01 07:11:56,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:56,095 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2021-05-01 07:11:56,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 46 states have internal predecessors, (52), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:11:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2021-05-01 07:11:56,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-01 07:11:56,096 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:56,096 INFO L519 BasicCegarLoop]: trace histogram [39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:56,096 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-01 07:11:56,096 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:56,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1072168316, now seen corresponding path program 39 times [2021-05-01 07:11:56,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:56,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656507667] [2021-05-01 07:11:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:56,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:56,101 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_865 v_main_~n~0_47) InVars {main_~i~0=v_main_~i~0_865, main_~n~0=v_main_~n~0_47} OutVars{main_~i~0=v_main_~i~0_865, main_~n~0=v_main_~n~0_47} AuxVars[] AssignedVars[] [2021-05-01 07:11:56,103 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:11:56,106 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,108 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,111 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,114 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,116 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,118 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,119 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,122 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,125 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:56,125 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:56,128 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,130 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,131 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:56,133 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,135 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,136 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:11:56,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:11:56,152 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:56,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:56,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:56,171 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:11:56,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:56,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:56,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:56,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:56,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:56,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:56,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:56,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:56,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:56,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:11:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:56,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:11:56,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:11:56,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,304 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:11:56,327 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,328 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:56,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,341 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:56,361 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,361 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:56,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,377 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:56,398 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,413 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:56,435 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,436 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:56,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,460 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:56,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,491 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:56,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,520 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:56,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,545 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:56,572 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,572 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:56,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,595 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:56,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,623 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:56,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,653 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:56,683 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,685 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:56,714 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,721 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:56,752 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,752 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:56,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,780 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:56,814 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,815 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:56,852 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,853 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:56,883 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,884 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:56,915 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,916 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:56,971 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:56,972 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:57,008 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:57,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:57,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,043 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:11:57,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,084 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:57,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,125 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:11:57,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,167 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:57,210 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:57,211 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:57,250 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:57,250 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:11:57,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,290 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:57,336 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:57,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:57,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,378 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:11:57,426 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:57,426 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:57,470 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:57,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:11:57,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,514 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:11:57,565 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:57,565 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:57,612 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:11:57,612 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:11:57,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:57,660 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:57,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656507667] [2021-05-01 07:11:57,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [656507667] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:57,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:57,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-05-01 07:11:57,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477332834] [2021-05-01 07:11:57,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-01 07:11:57,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:57,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-01 07:11:57,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2406, Unknown=0, NotChecked=0, Total=2550 [2021-05-01 07:11:57,665 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:00,692 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2021-05-01 07:12:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-01 07:12:00,693 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2021-05-01 07:12:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:00,694 INFO L225 Difference]: With dead ends: 78 [2021-05-01 07:12:00,694 INFO L226 Difference]: Without dead ends: 64 [2021-05-01 07:12:00,694 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1666 ImplicationChecksByTransitivity, 3302.5ms TimeCoverageRelationStatistics Valid=440, Invalid=9262, Unknown=0, NotChecked=0, Total=9702 [2021-05-01 07:12:00,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-01 07:12:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2021-05-01 07:12:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-05-01 07:12:00,702 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2021-05-01 07:12:00,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:00,702 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-05-01 07:12:00,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 47 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-05-01 07:12:00,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-01 07:12:00,703 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:00,703 INFO L519 BasicCegarLoop]: trace histogram [40, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:00,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-01 07:12:00,703 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:00,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:00,703 INFO L82 PathProgramCache]: Analyzing trace with hash -250879668, now seen corresponding path program 40 times [2021-05-01 07:12:00,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:00,703 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201812032] [2021-05-01 07:12:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:00,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:00,708 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_907 v_main_~n~0_48) InVars {main_~i~0=v_main_~i~0_907, main_~n~0=v_main_~n~0_48} OutVars{main_~i~0=v_main_~i~0_907, main_~n~0=v_main_~n~0_48} AuxVars[] AssignedVars[] [2021-05-01 07:12:00,710 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:00,711 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,714 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,717 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:00,718 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:00,721 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:00,724 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,726 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,728 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,732 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,737 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,739 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,742 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,744 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,746 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,747 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:00,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:12:00,767 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:00,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:00,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:00,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:00,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:00,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:00,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:00,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:00,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:00,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:00,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:00,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:00,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:00,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:00,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:00,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:00,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:00,914 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:12:00,914 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:00,928 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:00,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:00,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,943 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:00,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:00,964 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:00,985 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:00,986 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:01,003 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,004 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:01,022 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,023 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:01,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,042 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:01,067 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,068 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:01,089 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,090 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:01,112 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:01,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,135 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:01,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,168 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:01,198 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,198 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:01,223 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,229 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:01,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,256 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:01,288 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,289 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:01,317 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:01,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,346 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:01,381 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,382 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:01,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,413 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:01,450 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,451 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:01,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,493 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:01,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,535 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:01,575 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,575 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:01,611 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,612 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:01,649 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,649 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:01,687 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:01,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,725 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:01,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,770 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:01,815 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,815 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:01,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:01,856 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:01,903 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,904 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:01,946 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,947 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:01,990 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:01,991 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:02,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:02,035 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:02,086 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:02,087 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:02,132 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:02,133 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:02,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:02,180 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:02,233 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:02,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:02,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:02,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:02,288 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:02,288 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201812032] [2021-05-01 07:12:02,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [201812032] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:02,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:02,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-01 07:12:02,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889019] [2021-05-01 07:12:02,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-01 07:12:02,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:02,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-01 07:12:02,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2467, Unknown=0, NotChecked=0, Total=2652 [2021-05-01 07:12:02,289 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:05,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:05,389 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-05-01 07:12:05,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-01 07:12:05,390 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2021-05-01 07:12:05,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:05,390 INFO L225 Difference]: With dead ends: 79 [2021-05-01 07:12:05,390 INFO L226 Difference]: Without dead ends: 65 [2021-05-01 07:12:05,391 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 3361.1ms TimeCoverageRelationStatistics Valid=527, Invalid=9573, Unknown=0, NotChecked=0, Total=10100 [2021-05-01 07:12:05,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-01 07:12:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-05-01 07:12:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-05-01 07:12:05,397 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2021-05-01 07:12:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:05,397 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-05-01 07:12:05,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 48 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:05,397 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-05-01 07:12:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-01 07:12:05,397 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:05,397 INFO L519 BasicCegarLoop]: trace histogram [41, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:05,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-01 07:12:05,398 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:05,398 INFO L82 PathProgramCache]: Analyzing trace with hash -560735356, now seen corresponding path program 41 times [2021-05-01 07:12:05,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:05,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715026183] [2021-05-01 07:12:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:05,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:05,402 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_950 v_main_~n~0_49) InVars {main_~i~0=v_main_~i~0_950, main_~n~0=v_main_~n~0_49} OutVars{main_~i~0=v_main_~i~0_950, main_~n~0=v_main_~n~0_49} AuxVars[] AssignedVars[] [2021-05-01 07:12:05,413 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:05,417 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,419 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,422 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,424 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,426 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,429 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,430 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,434 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,437 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:05,437 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:05,440 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:05,442 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,446 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,448 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,449 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:05,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:12:05,465 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:05,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:05,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:05,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:05,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:05,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:05,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:05,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:05,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:05,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:05,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:05,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:05,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:05,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:05,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:05,658 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:12:05,659 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:05,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,676 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:05,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,701 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:05,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,727 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:05,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,754 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:05,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,782 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:05,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,812 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:05,844 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:05,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:05,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,876 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:05,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:05,910 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:05,945 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:05,945 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:05,975 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:05,976 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:06,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,012 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:06,050 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:06,050 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:06,084 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:06,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:06,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,120 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:06,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,157 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:06,191 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:06,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:06,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,221 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:06,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,257 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:06,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,293 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:06,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,330 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:06,368 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:06,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:06,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,403 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:06,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,444 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:06,485 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:06,486 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:06,532 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:06,533 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:06,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,581 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:06,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,630 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:06,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,674 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:06,719 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:06,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:06,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,760 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:06,808 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:06,808 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:06,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,851 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:06,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,900 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:06,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:06,950 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:07,001 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:07,001 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:07,048 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:07,049 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:07,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:07,099 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:07,153 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:07,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:07,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:07,202 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:07,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:07,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:07,257 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:07,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715026183] [2021-05-01 07:12:07,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [715026183] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:07,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:07,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-01 07:12:07,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35642211] [2021-05-01 07:12:07,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-01 07:12:07,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:07,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-01 07:12:07,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2567, Unknown=0, NotChecked=0, Total=2756 [2021-05-01 07:12:07,258 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 51 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:10,467 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2021-05-01 07:12:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-01 07:12:10,468 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-05-01 07:12:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:10,469 INFO L225 Difference]: With dead ends: 80 [2021-05-01 07:12:10,469 INFO L226 Difference]: Without dead ends: 66 [2021-05-01 07:12:10,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 3705.5ms TimeCoverageRelationStatistics Valid=538, Invalid=9968, Unknown=0, NotChecked=0, Total=10506 [2021-05-01 07:12:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-01 07:12:10,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-05-01 07:12:10,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2021-05-01 07:12:10,477 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 61 [2021-05-01 07:12:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:10,477 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2021-05-01 07:12:10,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 50 states have (on average 1.1) internal successors, (55), 49 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:10,477 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2021-05-01 07:12:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-01 07:12:10,477 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:10,477 INFO L519 BasicCegarLoop]: trace histogram [42, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:10,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-01 07:12:10,478 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:10,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1576327092, now seen corresponding path program 42 times [2021-05-01 07:12:10,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:10,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572425388] [2021-05-01 07:12:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:10,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:10,483 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_994 v_main_~n~0_50) InVars {main_~i~0=v_main_~i~0_994, main_~n~0=v_main_~n~0_50} OutVars{main_~i~0=v_main_~i~0_994, main_~n~0=v_main_~n~0_50} AuxVars[] AssignedVars[] [2021-05-01 07:12:10,484 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:10,485 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,488 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,491 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:10,491 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:10,494 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,496 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:10,498 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,500 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,502 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,504 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,506 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,508 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,510 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,512 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,514 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:10,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:12:10,531 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:10,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:10,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:10,561 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:12:10,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:10,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:10,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:10,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:10,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:10,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:10,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:10,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:10,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:10,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:10,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:10,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:10,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,715 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:12:10,744 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:10,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:10,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,758 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:10,778 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:10,779 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:10,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,794 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:10,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,816 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:10,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,838 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:10,861 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:10,862 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:10,881 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:10,881 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:10,902 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:10,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:10,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,923 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:10,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,950 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:10,978 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:10,979 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:11,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,003 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:11,033 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:11,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,059 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:11,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,097 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:11,130 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,131 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:11,159 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,160 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:11,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,190 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:11,227 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:11,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,260 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:11,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,299 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:11,339 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,340 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:11,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,375 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:11,417 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,417 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:11,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,456 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:11,500 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:11,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,540 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:11,585 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:11,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,627 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:11,674 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,675 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:11,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,718 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:11,772 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,773 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:11,815 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,816 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:11,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,860 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:11,911 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,911 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:11,957 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:11,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:12,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,004 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:12,056 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:12,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:12,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,105 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:12,160 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:12,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:12,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:12,211 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:12,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572425388] [2021-05-01 07:12:12,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1572425388] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:12,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:12,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-01 07:12:12,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561049904] [2021-05-01 07:12:12,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-01 07:12:12,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:12,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-01 07:12:12,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2709, Unknown=0, NotChecked=0, Total=2862 [2021-05-01 07:12:12,213 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:15,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:15,721 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2021-05-01 07:12:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-01 07:12:15,732 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2021-05-01 07:12:15,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:15,733 INFO L225 Difference]: With dead ends: 81 [2021-05-01 07:12:15,733 INFO L226 Difference]: Without dead ends: 67 [2021-05-01 07:12:15,734 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1852 ImplicationChecksByTransitivity, 3773.9ms TimeCoverageRelationStatistics Valid=467, Invalid=10453, Unknown=0, NotChecked=0, Total=10920 [2021-05-01 07:12:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-01 07:12:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-05-01 07:12:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2021-05-01 07:12:15,742 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 62 [2021-05-01 07:12:15,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:15,742 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2021-05-01 07:12:15,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 50 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:15,742 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2021-05-01 07:12:15,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 07:12:15,743 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:15,743 INFO L519 BasicCegarLoop]: trace histogram [43, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:15,743 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-01 07:12:15,743 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:15,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:15,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1300067460, now seen corresponding path program 43 times [2021-05-01 07:12:15,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:15,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210104691] [2021-05-01 07:12:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:15,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:15,751 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1039 v_main_~n~0_51) InVars {main_~i~0=v_main_~i~0_1039, main_~n~0=v_main_~n~0_51} OutVars{main_~i~0=v_main_~i~0_1039, main_~n~0=v_main_~n~0_51} AuxVars[] AssignedVars[] [2021-05-01 07:12:15,753 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:15,753 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,757 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:15,760 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,761 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:15,763 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:15,767 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,770 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,773 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,776 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,778 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,781 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,783 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,785 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,788 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,790 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,791 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:15,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:12:15,812 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:15,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:15,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:15,832 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:12:15,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:15,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:15,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:15,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:15,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:15,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:15,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:15,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:15,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:15,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:15,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:15,979 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:12:15,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:15,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:15,994 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:16,014 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,015 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:16,030 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:16,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,047 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:16,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,070 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:16,094 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,094 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:16,114 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,117 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:16,139 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,140 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:16,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,161 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:16,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,188 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:16,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,216 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:16,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,245 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:16,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,275 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:16,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,309 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:16,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,341 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:16,374 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,375 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:16,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,403 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:16,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,439 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:16,475 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:16,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,512 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:16,553 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,554 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:16,592 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,593 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:16,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,627 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:16,668 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:16,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,705 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:16,747 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,747 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:16,785 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:16,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,824 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:16,869 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:16,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:16,912 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:16,959 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:16,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:17,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:17,002 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:17,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:17,050 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:17,099 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:17,099 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:17,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:17,145 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:17,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:17,196 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:17,249 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:17,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:17,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:17,297 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:17,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:17,351 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:17,410 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:17,411 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:17,461 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:17,462 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:17,514 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:17,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:17,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:17,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:17,566 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:17,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210104691] [2021-05-01 07:12:17,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1210104691] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:17,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:17,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-01 07:12:17,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422820515] [2021-05-01 07:12:17,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-01 07:12:17,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:17,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-01 07:12:17,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2773, Unknown=0, NotChecked=0, Total=2970 [2021-05-01 07:12:17,567 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:21,090 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2021-05-01 07:12:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-01 07:12:21,091 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-05-01 07:12:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:21,092 INFO L225 Difference]: With dead ends: 82 [2021-05-01 07:12:21,092 INFO L226 Difference]: Without dead ends: 68 [2021-05-01 07:12:21,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 3845.0ms TimeCoverageRelationStatistics Valid=560, Invalid=10782, Unknown=0, NotChecked=0, Total=11342 [2021-05-01 07:12:21,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-01 07:12:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-05-01 07:12:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2021-05-01 07:12:21,100 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2021-05-01 07:12:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:21,100 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2021-05-01 07:12:21,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 52 states have (on average 1.0961538461538463) internal successors, (57), 51 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2021-05-01 07:12:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-01 07:12:21,100 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:21,100 INFO L519 BasicCegarLoop]: trace histogram [44, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:21,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-01 07:12:21,101 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:21,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:21,101 INFO L82 PathProgramCache]: Analyzing trace with hash 273985356, now seen corresponding path program 44 times [2021-05-01 07:12:21,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:21,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5553029] [2021-05-01 07:12:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:21,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:21,106 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1085 v_main_~n~0_52) InVars {main_~i~0=v_main_~i~0_1085, main_~n~0=v_main_~n~0_52} OutVars{main_~i~0=v_main_~i~0_1085, main_~n~0=v_main_~n~0_52} AuxVars[] AssignedVars[] [2021-05-01 07:12:21,107 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:21,108 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,112 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:21,115 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,115 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:21,118 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,121 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,123 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:21,125 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,129 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,131 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,133 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,136 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,140 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,142 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,143 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:21,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:12:21,161 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:21,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:21,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:21,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:21,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:21,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:21,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:21,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:21,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:21,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:21,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:21,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:21,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:21,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:21,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:21,317 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:12:21,318 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:21,332 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,333 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:21,347 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:21,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,364 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:21,385 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,386 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:21,404 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:21,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,423 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:21,448 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,448 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:21,469 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,469 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:21,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,491 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:21,518 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,519 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:21,542 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:21,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,567 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:21,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,597 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:21,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,628 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:21,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,664 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:21,699 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,700 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:21,729 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:21,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,759 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:21,795 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,795 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:21,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,827 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:21,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,864 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:21,903 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:21,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:21,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,938 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:21,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,978 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:22,021 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,021 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:22,058 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,059 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:22,097 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,098 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:22,137 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:22,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:22,192 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:22,239 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:22,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:22,281 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:22,330 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,330 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:22,375 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,375 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:22,421 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,421 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:22,471 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,472 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:22,519 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,519 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:22,567 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,568 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:22,616 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:22,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:22,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:22,666 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:22,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:22,722 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:22,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:22,779 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:22,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:22,837 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:22,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:22,895 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:22,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:22,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:22,957 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:22,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5553029] [2021-05-01 07:12:22,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [5553029] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:22,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:22,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-01 07:12:22,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259801024] [2021-05-01 07:12:22,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-01 07:12:22,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:22,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-01 07:12:22,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2879, Unknown=0, NotChecked=0, Total=3080 [2021-05-01 07:12:22,958 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:26,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:26,691 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2021-05-01 07:12:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-01 07:12:26,691 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-05-01 07:12:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:26,692 INFO L225 Difference]: With dead ends: 83 [2021-05-01 07:12:26,692 INFO L226 Difference]: Without dead ends: 69 [2021-05-01 07:12:26,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 3992.5ms TimeCoverageRelationStatistics Valid=571, Invalid=11201, Unknown=0, NotChecked=0, Total=11772 [2021-05-01 07:12:26,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-05-01 07:12:26,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-05-01 07:12:26,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:26,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-05-01 07:12:26,698 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 64 [2021-05-01 07:12:26,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:26,698 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-05-01 07:12:26,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 52 states have internal predecessors, (58), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-05-01 07:12:26,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-01 07:12:26,698 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:26,698 INFO L519 BasicCegarLoop]: trace histogram [45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:26,698 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-01 07:12:26,698 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:26,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:26,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1469788796, now seen corresponding path program 45 times [2021-05-01 07:12:26,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:26,699 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157766806] [2021-05-01 07:12:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:26,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:26,706 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1132 v_main_~n~0_53) InVars {main_~i~0=v_main_~i~0_1132, main_~n~0=v_main_~n~0_53} OutVars{main_~i~0=v_main_~i~0_1132, main_~n~0=v_main_~n~0_53} AuxVars[] AssignedVars[] [2021-05-01 07:12:26,709 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:26,711 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,713 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,715 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,717 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,719 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,721 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,722 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,725 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,727 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:26,728 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:26,730 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:26,733 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,738 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,740 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,740 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:26,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:12:26,757 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:26,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:26,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:26,774 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:12:26,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:26,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:26,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:26,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:26,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:26,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:26,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:26,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:26,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:26,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:26,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:26,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:26,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:26,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,907 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:12:26,932 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:26,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:26,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,948 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:26,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:26,969 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:26,992 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:26,993 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:27,011 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,012 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:27,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,031 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:27,056 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,057 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:27,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,083 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:27,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,109 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:27,138 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:27,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,163 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:27,195 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,195 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:27,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,221 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:27,253 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,254 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:27,283 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,283 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:27,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,320 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:27,355 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,356 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:27,387 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:27,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,419 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:27,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,457 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:27,499 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,500 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:27,534 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,535 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:27,571 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,572 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:27,608 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:27,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,646 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:27,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,689 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:27,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,734 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:27,780 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,780 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:27,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,821 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:27,869 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:27,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:27,913 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:27,962 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:27,962 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:28,006 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:28,007 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:28,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:28,053 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:28,105 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:28,106 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:28,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:28,154 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:28,208 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:28,209 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:28,258 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:28,259 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:28,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:28,310 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:28,362 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:28,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:28,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:28,416 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:28,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:28,476 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:28,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:28,540 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:28,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:28,601 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:28,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:28,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:28,663 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:28,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157766806] [2021-05-01 07:12:28,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1157766806] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:28,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:28,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2021-05-01 07:12:28,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501607770] [2021-05-01 07:12:28,664 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-01 07:12:28,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:28,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-01 07:12:28,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2987, Unknown=0, NotChecked=0, Total=3192 [2021-05-01 07:12:28,664 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:32,819 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2021-05-01 07:12:32,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-01 07:12:32,820 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2021-05-01 07:12:32,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:32,820 INFO L225 Difference]: With dead ends: 84 [2021-05-01 07:12:32,821 INFO L226 Difference]: Without dead ends: 70 [2021-05-01 07:12:32,821 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1946 ImplicationChecksByTransitivity, 4250.0ms TimeCoverageRelationStatistics Valid=582, Invalid=11628, Unknown=0, NotChecked=0, Total=12210 [2021-05-01 07:12:32,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-01 07:12:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2021-05-01 07:12:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 62 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:32,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2021-05-01 07:12:32,829 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 65 [2021-05-01 07:12:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:32,829 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2021-05-01 07:12:32,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 54 states have (on average 1.0925925925925926) internal successors, (59), 53 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:32,830 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2021-05-01 07:12:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-01 07:12:32,830 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:32,830 INFO L519 BasicCegarLoop]: trace histogram [46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:32,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-01 07:12:32,830 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:32,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:32,831 INFO L82 PathProgramCache]: Analyzing trace with hash 307787340, now seen corresponding path program 46 times [2021-05-01 07:12:32,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:32,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370725641] [2021-05-01 07:12:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:32,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:32,836 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1180 v_main_~n~0_54) InVars {main_~i~0=v_main_~i~0_1180, main_~n~0=v_main_~n~0_54} OutVars{main_~i~0=v_main_~i~0_1180, main_~n~0=v_main_~n~0_54} AuxVars[] AssignedVars[] [2021-05-01 07:12:32,838 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:32,841 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,843 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,846 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,849 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,851 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,854 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,855 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,859 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,862 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:32,863 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:32,865 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:32,869 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,871 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,874 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,877 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,877 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:32,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:12:32,895 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:32,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:32,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:32,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:32,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:32,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:32,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:32,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:32,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:32,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:32,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:33,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:33,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:33,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:33,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:33,080 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:12:33,081 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:33,101 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:33,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,123 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:33,145 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:33,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,163 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:33,187 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,187 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:33,208 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,208 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:33,229 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:33,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,251 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:33,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,278 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:33,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,308 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:33,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,338 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:33,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,368 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:33,401 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:33,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,429 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:33,463 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,464 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:33,493 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,494 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:33,526 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,526 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:33,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,563 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:33,600 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:33,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,635 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:33,674 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,675 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:33,711 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,711 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:33,747 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,748 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:33,785 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,786 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:33,824 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:33,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,863 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:33,910 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:33,911 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:33,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,951 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:34,000 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,001 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:34,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,058 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:34,124 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:34,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,170 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:34,223 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,224 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:34,271 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,272 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:34,320 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,320 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:34,370 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,371 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:34,421 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:34,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,473 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:34,531 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,531 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:34,586 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,587 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:34,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,654 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:34,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,727 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:34,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,808 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:34,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,900 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:34,975 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:34,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:35,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:35,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:35,037 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:35,037 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370725641] [2021-05-01 07:12:35,038 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1370725641] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:35,038 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:35,038 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-01 07:12:35,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927517619] [2021-05-01 07:12:35,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-01 07:12:35,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:35,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-01 07:12:35,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=3097, Unknown=0, NotChecked=0, Total=3306 [2021-05-01 07:12:35,039 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:39,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:39,344 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2021-05-01 07:12:39,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-01 07:12:39,345 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 66 [2021-05-01 07:12:39,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:39,346 INFO L225 Difference]: With dead ends: 85 [2021-05-01 07:12:39,346 INFO L226 Difference]: Without dead ends: 71 [2021-05-01 07:12:39,347 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 4607.4ms TimeCoverageRelationStatistics Valid=593, Invalid=12063, Unknown=0, NotChecked=0, Total=12656 [2021-05-01 07:12:39,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-05-01 07:12:39,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-05-01 07:12:39,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 62 states have (on average 1.032258064516129) internal successors, (64), 63 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2021-05-01 07:12:39,356 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 66 [2021-05-01 07:12:39,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:39,356 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2021-05-01 07:12:39,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 54 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2021-05-01 07:12:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-01 07:12:39,357 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:39,357 INFO L519 BasicCegarLoop]: trace histogram [47, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:39,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-01 07:12:39,357 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:39,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:39,357 INFO L82 PathProgramCache]: Analyzing trace with hash -421927292, now seen corresponding path program 47 times [2021-05-01 07:12:39,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:39,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000201402] [2021-05-01 07:12:39,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:39,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:39,361 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1229 v_main_~n~0_55) InVars {main_~i~0=v_main_~i~0_1229, main_~n~0=v_main_~n~0_55} OutVars{main_~i~0=v_main_~i~0_1229, main_~n~0=v_main_~n~0_55} AuxVars[] AssignedVars[] [2021-05-01 07:12:39,363 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:39,365 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,367 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,370 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,372 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,374 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,376 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,377 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,380 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,382 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:39,383 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:39,385 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:39,387 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,389 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,391 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,393 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,394 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:39,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:12:39,412 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:39,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:39,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:39,428 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:12:39,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:39,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:39,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:39,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:39,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:39,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:39,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:39,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:39,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:39,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:39,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:39,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:39,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,577 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:12:39,602 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,603 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:39,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,618 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:39,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,643 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:39,668 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:39,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,687 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:39,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,711 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:39,736 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,737 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:39,758 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,758 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:39,781 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,782 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:39,804 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,805 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:39,829 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,830 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:39,854 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,855 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:39,880 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,881 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:39,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:39,908 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:39,941 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,942 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:39,971 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:39,971 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:40,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,002 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:40,038 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:40,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,075 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:40,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,113 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:40,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,153 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:40,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,193 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:40,235 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,235 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:40,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,272 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:40,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,315 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:40,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,358 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:40,403 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,403 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:40,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,444 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:40,491 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,492 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:40,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,534 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:40,583 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,583 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:40,628 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,629 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:40,674 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,675 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:40,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,723 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:40,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,777 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:40,831 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,832 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:40,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:40,881 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:40,937 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,938 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:40,990 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:40,990 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:41,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:41,043 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:41,103 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:41,103 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:41,158 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:41,158 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:41,213 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:41,214 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:41,271 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:41,271 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:41,334 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:41,335 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:41,393 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:41,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:41,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:41,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:41,452 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:41,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000201402] [2021-05-01 07:12:41,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2000201402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:41,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:41,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2021-05-01 07:12:41,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119441911] [2021-05-01 07:12:41,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-01 07:12:41,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:41,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-01 07:12:41,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=3254, Unknown=0, NotChecked=0, Total=3422 [2021-05-01 07:12:41,454 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:45,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:45,869 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2021-05-01 07:12:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-01 07:12:45,870 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2021-05-01 07:12:45,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:45,870 INFO L225 Difference]: With dead ends: 86 [2021-05-01 07:12:45,870 INFO L226 Difference]: Without dead ends: 72 [2021-05-01 07:12:45,871 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 4625.4ms TimeCoverageRelationStatistics Valid=512, Invalid=12598, Unknown=0, NotChecked=0, Total=13110 [2021-05-01 07:12:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-01 07:12:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-05-01 07:12:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2021-05-01 07:12:45,881 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2021-05-01 07:12:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:45,881 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2021-05-01 07:12:45,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 55 states have internal predecessors, (61), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2021-05-01 07:12:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-01 07:12:45,882 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:45,882 INFO L519 BasicCegarLoop]: trace histogram [48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:45,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-01 07:12:45,882 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1568244404, now seen corresponding path program 48 times [2021-05-01 07:12:45,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:45,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955471327] [2021-05-01 07:12:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:45,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:45,890 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1279 v_main_~n~0_56) InVars {main_~i~0=v_main_~i~0_1279, main_~n~0=v_main_~n~0_56} OutVars{main_~i~0=v_main_~i~0_1279, main_~n~0=v_main_~n~0_56} AuxVars[] AssignedVars[] [2021-05-01 07:12:45,892 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:45,895 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,898 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,903 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,907 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,909 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,910 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,914 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,917 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:45,918 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:45,921 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:45,924 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,927 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,930 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,932 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,933 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:45,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:12:45,955 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:45,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:45,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:45,986 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:12:45,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:45,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:46,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:46,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:46,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:46,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:46,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:46,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:46,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:46,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:46,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:46,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:46,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:46,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,156 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:12:46,182 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,183 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:46,198 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,199 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:46,215 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:46,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,234 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:46,259 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,260 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:46,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,281 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:46,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,306 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:46,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,333 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:46,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,361 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:46,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,391 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:46,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,420 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:46,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,451 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:46,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,485 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:46,518 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,519 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:46,552 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,553 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:46,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,584 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:46,621 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,621 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:46,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,653 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:46,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,686 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:46,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,725 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:46,765 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,766 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:46,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,802 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:46,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,844 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:46,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,886 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:46,931 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,931 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:46,970 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:46,971 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:47,013 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,014 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:47,054 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:47,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,097 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:47,147 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,148 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:47,192 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,193 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:47,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,240 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:47,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,290 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:47,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,345 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:47,398 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,398 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:47,449 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,450 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:47,499 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,500 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:47,552 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,553 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:47,604 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,605 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:47,660 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,669 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:47,725 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,726 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:47,782 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,783 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:47,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,844 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:47,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,907 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:47,972 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:47,973 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:48,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:48,032 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:48,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:48,100 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:48,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:48,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:48,168 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:48,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955471327] [2021-05-01 07:12:48,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1955471327] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:48,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:48,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-01 07:12:48,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334589181] [2021-05-01 07:12:48,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-01 07:12:48,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:48,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-01 07:12:48,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=3369, Unknown=0, NotChecked=0, Total=3540 [2021-05-01 07:12:48,169 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:53,033 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2021-05-01 07:12:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-01 07:12:53,034 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2021-05-01 07:12:53,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:53,035 INFO L225 Difference]: With dead ends: 87 [2021-05-01 07:12:53,035 INFO L226 Difference]: Without dead ends: 73 [2021-05-01 07:12:53,036 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 5036.7ms TimeCoverageRelationStatistics Valid=521, Invalid=13051, Unknown=0, NotChecked=0, Total=13572 [2021-05-01 07:12:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-05-01 07:12:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-05-01 07:12:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:53,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2021-05-01 07:12:53,044 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2021-05-01 07:12:53,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:53,045 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2021-05-01 07:12:53,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:12:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2021-05-01 07:12:53,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 07:12:53,045 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:53,045 INFO L519 BasicCegarLoop]: trace histogram [49, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:53,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-01 07:12:53,045 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:53,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:53,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1550630788, now seen corresponding path program 49 times [2021-05-01 07:12:53,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:53,046 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518354015] [2021-05-01 07:12:53,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:53,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:53,051 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1330 v_main_~n~0_57) InVars {main_~i~0=v_main_~i~0_1330, main_~n~0=v_main_~n~0_57} OutVars{main_~i~0=v_main_~i~0_1330, main_~n~0=v_main_~n~0_57} AuxVars[] AssignedVars[] [2021-05-01 07:12:53,052 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:12:53,056 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,058 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,060 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,062 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,065 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,067 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,072 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,076 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:53,079 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,079 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:53,082 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,084 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:53,086 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,089 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,091 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,092 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:12:53,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:12:53,110 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:53,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:53,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:53,134 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:12:53,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:53,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:53,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:53,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:53,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:53,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:53,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:53,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:53,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:53,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:12:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:53,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:53,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:12:53,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:12:53,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,313 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:12:53,347 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:53,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,382 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:53,411 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,412 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:53,434 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,435 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:53,458 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,459 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:53,484 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:53,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,513 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:53,548 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,549 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:53,578 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,579 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:53,610 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,611 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:53,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,645 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:53,685 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:53,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,720 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:53,766 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,767 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:53,804 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,805 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:53,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:53,844 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:53,893 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,894 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:53,934 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,935 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:53,981 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:53,982 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:54,026 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:54,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:54,073 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:54,122 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,123 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:54,160 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,161 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:54,202 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:54,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:54,241 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:54,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:54,288 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:12:54,336 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,344 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:54,387 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,388 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:54,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:54,434 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:12:54,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:54,485 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:54,539 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,539 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:54,586 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,587 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:54,638 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,639 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:54,687 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,687 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:54,741 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,742 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:54,793 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,794 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:12:54,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:54,852 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:54,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:54,910 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:54,972 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:54,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:55,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:55,028 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:12:55,092 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:55,093 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:12:55,151 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:55,152 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:55,213 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:55,213 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:55,275 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:55,276 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:55,337 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:55,338 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:55,401 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:55,401 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:55,463 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:12:55,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:12:55,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:55,530 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:12:55,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:55,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:55,601 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:55,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518354015] [2021-05-01 07:12:55,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [518354015] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:55,601 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:55,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2021-05-01 07:12:55,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601023518] [2021-05-01 07:12:55,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-01 07:12:55,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:55,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-01 07:12:55,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=3486, Unknown=0, NotChecked=0, Total=3660 [2021-05-01 07:12:55,602 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:00,608 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2021-05-01 07:13:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-01 07:13:00,610 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 69 [2021-05-01 07:13:00,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:00,610 INFO L225 Difference]: With dead ends: 88 [2021-05-01 07:13:00,610 INFO L226 Difference]: Without dead ends: 74 [2021-05-01 07:13:00,611 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2321 ImplicationChecksByTransitivity, 5390.2ms TimeCoverageRelationStatistics Valid=530, Invalid=13512, Unknown=0, NotChecked=0, Total=14042 [2021-05-01 07:13:00,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-01 07:13:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-05-01 07:13:00,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-05-01 07:13:00,620 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 69 [2021-05-01 07:13:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:00,620 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-05-01 07:13:00,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 57 states have internal predecessors, (63), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-05-01 07:13:00,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-01 07:13:00,620 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:00,621 INFO L519 BasicCegarLoop]: trace histogram [50, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:00,621 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-01 07:13:00,621 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash -548486068, now seen corresponding path program 50 times [2021-05-01 07:13:00,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:00,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603423561] [2021-05-01 07:13:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:00,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:00,627 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1382 v_main_~n~0_58) InVars {main_~i~0=v_main_~i~0_1382, main_~n~0=v_main_~n~0_58} OutVars{main_~i~0=v_main_~i~0_1382, main_~n~0=v_main_~n~0_58} AuxVars[] AssignedVars[] [2021-05-01 07:13:00,629 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:13:00,634 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,636 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,639 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,642 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,644 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,647 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,648 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,652 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:00,655 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,656 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:00,660 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,662 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,667 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:00,669 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,670 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:13:00,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:13:00,690 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:00,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:00,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:00,707 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:13:00,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:00,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:00,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:00,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:00,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:00,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:00,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:00,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:00,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:13:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:00,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:00,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:13:00,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:13:00,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,853 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:13:00,880 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:00,881 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:00,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:00,897 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:00,915 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:00,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:00,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,936 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:00,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,961 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:00,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:00,987 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:01,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,013 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:01,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,041 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:01,070 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,070 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:01,095 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,095 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:01,121 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:01,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,148 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:01,181 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:01,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,210 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:01,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,245 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:01,282 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,283 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:01,314 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,315 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:01,348 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,349 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:01,383 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:01,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,424 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:01,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,467 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:01,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,510 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:01,554 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:01,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,594 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:01,641 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,642 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:01,693 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:01,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,736 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:01,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,786 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:01,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,836 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:01,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,888 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:01,940 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:01,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:01,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:01,989 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:02,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,043 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:02,097 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:02,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:02,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,147 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:02,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,203 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:02,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,261 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:02,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,319 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:02,379 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:02,379 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:02,434 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:02,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:02,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,490 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:02,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,553 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:02,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,616 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:02,681 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:02,682 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:02,742 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:02,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:02,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:02,803 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:02,871 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:02,872 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:02,935 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:02,936 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:03,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:03,004 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:03,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:03,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:03,075 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:03,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603423561] [2021-05-01 07:13:03,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [603423561] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:03,075 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:03,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-01 07:13:03,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574052039] [2021-05-01 07:13:03,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-01 07:13:03,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:03,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-01 07:13:03,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=3605, Unknown=0, NotChecked=0, Total=3782 [2021-05-01 07:13:03,076 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:08,212 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2021-05-01 07:13:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-01 07:13:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 70 [2021-05-01 07:13:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:08,213 INFO L225 Difference]: With dead ends: 89 [2021-05-01 07:13:08,213 INFO L226 Difference]: Without dead ends: 75 [2021-05-01 07:13:08,215 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2392 ImplicationChecksByTransitivity, 5385.6ms TimeCoverageRelationStatistics Valid=539, Invalid=13981, Unknown=0, NotChecked=0, Total=14520 [2021-05-01 07:13:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-05-01 07:13:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-05-01 07:13:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2021-05-01 07:13:08,223 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 70 [2021-05-01 07:13:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:08,223 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2021-05-01 07:13:08,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 58 states have internal predecessors, (64), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2021-05-01 07:13:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 07:13:08,224 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:08,224 INFO L519 BasicCegarLoop]: trace histogram [51, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:08,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-01 07:13:08,224 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:08,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1196599164, now seen corresponding path program 51 times [2021-05-01 07:13:08,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:08,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085253996] [2021-05-01 07:13:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:08,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:08,236 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1435 v_main_~n~0_59) InVars {main_~i~0=v_main_~i~0_1435, main_~n~0=v_main_~n~0_59} OutVars{main_~i~0=v_main_~i~0_1435, main_~n~0=v_main_~n~0_59} AuxVars[] AssignedVars[] [2021-05-01 07:13:08,238 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:13:08,239 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,244 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:08,247 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,250 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:08,253 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,256 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:08,259 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,262 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,267 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,270 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,272 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,275 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,277 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,279 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,282 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:13:08,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:13:08,302 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:08,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:08,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:08,329 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:13:08,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:08,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:08,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:08,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:08,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:08,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:08,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:08,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:08,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:08,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:08,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:13:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:08,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:13:08,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:13:08,517 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:13:08,518 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:08,541 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:08,541 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:08,569 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:08,570 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:08,588 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:08,588 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:08,607 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:08,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:08,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,628 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:08,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,656 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:08,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,686 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:08,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,714 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:08,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,744 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:08,776 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:08,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:08,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,806 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:08,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,838 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:08,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,873 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:08,911 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:08,912 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:08,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,943 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:08,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,980 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:09,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,021 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:09,064 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,064 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:09,100 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,101 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:09,140 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:09,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,181 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:09,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,224 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:09,272 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,273 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:09,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,317 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:09,364 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,365 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:09,409 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,410 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:09,457 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:09,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,501 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:09,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,556 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:09,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,608 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:09,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,664 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:09,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,717 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:09,776 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:09,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,826 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:09,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,886 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:09,949 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:09,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:10,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,006 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:10,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,066 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:10,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,129 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:10,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,193 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:10,264 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:10,265 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:10,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,323 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:10,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,391 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:10,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,459 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:10,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,528 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:10,600 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:10,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:10,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,666 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:10,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,740 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:10,813 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:10,813 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:10,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,883 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:10,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:10,960 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:10,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085253996] [2021-05-01 07:13:10,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1085253996] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:10,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:10,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2021-05-01 07:13:10,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153473285] [2021-05-01 07:13:10,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-01 07:13:10,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:10,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-01 07:13:10,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=3677, Unknown=0, NotChecked=0, Total=3906 [2021-05-01 07:13:10,961 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:16,353 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2021-05-01 07:13:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-01 07:13:16,354 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2021-05-01 07:13:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:16,355 INFO L225 Difference]: With dead ends: 90 [2021-05-01 07:13:16,355 INFO L226 Difference]: Without dead ends: 76 [2021-05-01 07:13:16,356 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 5803.6ms TimeCoverageRelationStatistics Valid=648, Invalid=14358, Unknown=0, NotChecked=0, Total=15006 [2021-05-01 07:13:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-01 07:13:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2021-05-01 07:13:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 states have internal predecessors, (69), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-05-01 07:13:16,362 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2021-05-01 07:13:16,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:16,362 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-05-01 07:13:16,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 60 states have (on average 1.0833333333333333) internal successors, (65), 59 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-05-01 07:13:16,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-01 07:13:16,363 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:16,363 INFO L519 BasicCegarLoop]: trace histogram [52, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:16,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-01 07:13:16,363 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:16,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:16,364 INFO L82 PathProgramCache]: Analyzing trace with hash 186731340, now seen corresponding path program 52 times [2021-05-01 07:13:16,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:16,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378737734] [2021-05-01 07:13:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:16,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:16,379 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1489 v_main_~n~0_60) InVars {main_~i~0=v_main_~i~0_1489, main_~n~0=v_main_~n~0_60} OutVars{main_~i~0=v_main_~i~0_1489, main_~n~0=v_main_~n~0_60} AuxVars[] AssignedVars[] [2021-05-01 07:13:16,381 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:13:16,384 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,387 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,390 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,393 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,396 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,399 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,400 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,405 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:16,408 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,409 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:16,412 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:16,416 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,421 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,423 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,424 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:13:16,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:13:16,446 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:16,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:16,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:16,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:16,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:16,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:16,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:16,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:16,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:16,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:16,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:16,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:16,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:13:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:16,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:13:16,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:13:16,658 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:13:16,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:16,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,675 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:16,701 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:16,701 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:16,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,722 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:16,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,748 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:16,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,774 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:16,801 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:16,802 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:16,827 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:16,828 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:16,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,855 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:16,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,885 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:16,917 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:16,917 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:16,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:16,946 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:16,990 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:16,990 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:17,019 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:17,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:17,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,050 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:17,090 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:17,091 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:17,124 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:17,125 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:17,158 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:17,158 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:17,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,192 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:17,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,238 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:17,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,281 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:17,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,324 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:17,374 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:17,375 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:17,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,414 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:17,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,462 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:17,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,513 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:17,561 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:17,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:17,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,609 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:17,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,661 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:17,714 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:17,715 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:17,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,767 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:17,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,821 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:17,882 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:17,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:17,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,933 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:17,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:17,993 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:18,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,053 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:18,117 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:18,118 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:18,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,174 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:18,238 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:18,239 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:18,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,298 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:18,367 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:18,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:18,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,429 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:18,497 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:18,497 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:18,563 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:18,563 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:18,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,625 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:18,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,698 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:18,769 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:18,770 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:18,836 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:18,837 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:18,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,906 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:18,979 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:18,980 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:19,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,052 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:19,130 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:19,131 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:19,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:19,205 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:19,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378737734] [2021-05-01 07:13:19,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [378737734] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:19,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:19,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-01 07:13:19,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172602900] [2021-05-01 07:13:19,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-01 07:13:19,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:19,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-01 07:13:19,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3799, Unknown=0, NotChecked=0, Total=4032 [2021-05-01 07:13:19,207 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:25,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:25,057 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2021-05-01 07:13:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-01 07:13:25,058 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 72 [2021-05-01 07:13:25,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:25,059 INFO L225 Difference]: With dead ends: 91 [2021-05-01 07:13:25,059 INFO L226 Difference]: Without dead ends: 77 [2021-05-01 07:13:25,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2422 ImplicationChecksByTransitivity, 6134.3ms TimeCoverageRelationStatistics Valid=659, Invalid=14841, Unknown=0, NotChecked=0, Total=15500 [2021-05-01 07:13:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-01 07:13:25,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2021-05-01 07:13:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 states have internal predecessors, (70), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:25,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-05-01 07:13:25,070 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 72 [2021-05-01 07:13:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:25,070 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-05-01 07:13:25,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 60 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-05-01 07:13:25,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-01 07:13:25,070 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:25,070 INFO L519 BasicCegarLoop]: trace histogram [53, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:25,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-01 07:13:25,071 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:25,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:25,071 INFO L82 PathProgramCache]: Analyzing trace with hash 120304004, now seen corresponding path program 53 times [2021-05-01 07:13:25,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:25,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355815877] [2021-05-01 07:13:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:25,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:25,078 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1544 v_main_~n~0_61) InVars {main_~i~0=v_main_~i~0_1544, main_~n~0=v_main_~n~0_61} OutVars{main_~i~0=v_main_~i~0_1544, main_~n~0=v_main_~n~0_61} AuxVars[] AssignedVars[] [2021-05-01 07:13:25,080 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:13:25,081 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,085 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,089 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:25,090 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:25,093 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:25,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,100 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,104 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,109 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,112 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,116 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,119 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,124 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,127 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,130 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,131 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:13:25,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:13:25,159 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:25,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:25,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:25,179 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:13:25,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:25,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:25,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:25,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:25,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:25,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:25,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:25,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:25,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:25,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:13:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:25,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:13:25,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:13:25,390 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:13:25,391 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:25,413 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,414 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:25,439 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,440 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:25,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,472 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:25,508 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,509 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:25,538 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,539 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:25,571 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,572 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:25,606 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:25,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,642 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:25,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:25,684 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:25,722 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,723 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:25,757 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,758 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:25,799 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,800 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:25,841 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,842 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:25,889 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,890 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:25,942 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,943 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:25,988 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:25,989 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:26,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,035 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:26,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,084 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:26,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,133 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:26,181 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:26,182 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:26,223 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:26,224 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:26,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,266 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:26,318 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:26,319 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:26,366 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:26,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:26,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,414 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:26,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,468 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:26,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,522 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:26,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,576 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:26,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,632 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:26,691 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:26,692 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:26,745 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:26,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:26,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,799 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:26,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,860 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:26,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,921 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:26,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:26,985 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:27,050 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:27,051 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:27,111 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:27,112 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:27,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,172 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:27,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,240 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:27,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,308 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:27,388 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:27,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:27,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,457 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:27,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,529 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:27,603 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:27,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:27,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,670 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:27,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,745 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:27,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,821 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:27,899 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:27,900 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:27,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:27,971 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:28,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:28,050 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:28,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:28,130 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:28,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:28,212 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:28,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:28,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:28,295 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:28,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355815877] [2021-05-01 07:13:28,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1355815877] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:28,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:28,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2021-05-01 07:13:28,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094226990] [2021-05-01 07:13:28,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-01 07:13:28,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:28,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-01 07:13:28,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3923, Unknown=0, NotChecked=0, Total=4160 [2021-05-01 07:13:28,296 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:34,403 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2021-05-01 07:13:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-01 07:13:34,404 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2021-05-01 07:13:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:34,405 INFO L225 Difference]: With dead ends: 92 [2021-05-01 07:13:34,405 INFO L226 Difference]: Without dead ends: 78 [2021-05-01 07:13:34,406 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2494 ImplicationChecksByTransitivity, 6686.4ms TimeCoverageRelationStatistics Valid=670, Invalid=15332, Unknown=0, NotChecked=0, Total=16002 [2021-05-01 07:13:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-01 07:13:34,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-05-01 07:13:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2021-05-01 07:13:34,413 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 73 [2021-05-01 07:13:34,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:34,413 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2021-05-01 07:13:34,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 61 states have internal predecessors, (67), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2021-05-01 07:13:34,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-01 07:13:34,414 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:34,414 INFO L519 BasicCegarLoop]: trace histogram [54, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:34,414 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-01 07:13:34,414 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1938943412, now seen corresponding path program 54 times [2021-05-01 07:13:34,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:34,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865477171] [2021-05-01 07:13:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:34,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:34,428 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1600 v_main_~n~0_62) InVars {main_~i~0=v_main_~i~0_1600, main_~n~0=v_main_~n~0_62} OutVars{main_~i~0=v_main_~i~0_1600, main_~n~0=v_main_~n~0_62} AuxVars[] AssignedVars[] [2021-05-01 07:13:34,429 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:13:34,430 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,434 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,439 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:34,440 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:34,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,447 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:34,451 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,455 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,459 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,462 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,466 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,469 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,471 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,474 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,478 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,479 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:13:34,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:13:34,506 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:34,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:34,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:34,525 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:13:34,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:34,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:34,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:34,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:34,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:34,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:34,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:34,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:34,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:34,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:34,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:13:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:34,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:13:34,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:13:34,728 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:13:34,729 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:34,755 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:34,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:34,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,781 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:34,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,812 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:34,844 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:34,845 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:34,873 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:34,874 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:34,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,907 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:34,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:34,947 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:34,987 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:34,987 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:35,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,025 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:35,078 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,079 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:35,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,115 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:35,160 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,161 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:35,205 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,206 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:35,247 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,248 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:35,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,290 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:35,348 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,349 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:35,399 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,400 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:35,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,447 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:35,512 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,513 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:35,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,561 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:35,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,623 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:35,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,685 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:35,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,750 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:35,818 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,819 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:35,876 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:35,877 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:35,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,941 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:35,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:35,992 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:36,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,049 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:36,111 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:36,112 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:36,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,161 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:36,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,226 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:36,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,288 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:36,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,352 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:36,420 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:36,421 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:36,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,476 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:36,548 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:36,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:36,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,605 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:36,681 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:36,681 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:36,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,748 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:36,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,828 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:36,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,900 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:36,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:36,979 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:37,052 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,053 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:37,125 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,126 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:37,195 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,196 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:37,272 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,273 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:37,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:37,346 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:37,431 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,432 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:37,508 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,509 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:37,590 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,591 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:37,666 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,667 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:37,752 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,753 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:37,832 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:37,833 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:37,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:37,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:37,920 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:37,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865477171] [2021-05-01 07:13:37,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1865477171] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:37,920 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:37,920 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-01 07:13:37,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678015834] [2021-05-01 07:13:37,921 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-01 07:13:37,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:37,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-01 07:13:37,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=4049, Unknown=0, NotChecked=0, Total=4290 [2021-05-01 07:13:37,922 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:44,641 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2021-05-01 07:13:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-01 07:13:44,644 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2021-05-01 07:13:44,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:44,645 INFO L225 Difference]: With dead ends: 93 [2021-05-01 07:13:44,645 INFO L226 Difference]: Without dead ends: 79 [2021-05-01 07:13:44,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 7280.2ms TimeCoverageRelationStatistics Valid=681, Invalid=15831, Unknown=0, NotChecked=0, Total=16512 [2021-05-01 07:13:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-01 07:13:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2021-05-01 07:13:44,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:44,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-05-01 07:13:44,656 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 74 [2021-05-01 07:13:44,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:44,656 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-05-01 07:13:44,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 62 states have internal predecessors, (68), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-05-01 07:13:44,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-01 07:13:44,657 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:44,657 INFO L519 BasicCegarLoop]: trace histogram [55, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:44,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-01 07:13:44,658 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:44,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:44,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1351103868, now seen corresponding path program 55 times [2021-05-01 07:13:44,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:44,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103907311] [2021-05-01 07:13:44,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:44,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:44,665 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1657 v_main_~n~0_63) InVars {main_~i~0=v_main_~i~0_1657, main_~n~0=v_main_~n~0_63} OutVars{main_~i~0=v_main_~i~0_1657, main_~n~0=v_main_~n~0_63} AuxVars[] AssignedVars[] [2021-05-01 07:13:44,668 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:13:44,669 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,673 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,678 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:44,679 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:44,683 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:44,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,692 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,696 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,701 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,705 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,709 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,713 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,717 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,720 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,724 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,725 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:13:44,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:13:44,766 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:44,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:44,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:44,789 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:13:44,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:44,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:44,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:44,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:44,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:44,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:44,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:44,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:44,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:44,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:13:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:44,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:13:44,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:44,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:13:44,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,000 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:13:45,051 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,052 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:45,077 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,078 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:45,105 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,106 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:45,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,135 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:45,177 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:45,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,202 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:45,233 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,234 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:45,262 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,263 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:45,291 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,292 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:45,320 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,321 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:45,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,351 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:45,390 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,391 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:45,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,423 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:45,463 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,464 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:45,499 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,500 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:45,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,535 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:45,579 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,579 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:45,617 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,618 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:45,657 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,658 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:45,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,698 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:45,749 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,750 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:45,797 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,798 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:45,842 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:45,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:45,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,890 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:45,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,943 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:46,000 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,001 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:46,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,050 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:46,108 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,110 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:46,170 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,171 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:46,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,232 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:46,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,300 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:46,361 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:46,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,431 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:46,497 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,498 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:46,558 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,559 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:46,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,627 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:46,692 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,693 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:46,763 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,764 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:46,827 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:46,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,897 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:46,976 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:46,977 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:47,048 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:47,049 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:47,122 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:47,123 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:47,192 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:47,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:47,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,275 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:47,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,365 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:47,454 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:47,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:47,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,530 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:47,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,614 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:47,702 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:47,703 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:47,781 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:47,782 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:47,869 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:47,869 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:47,947 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:47,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:48,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:48,041 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:48,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:48,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:48,129 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:48,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103907311] [2021-05-01 07:13:48,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2103907311] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:48,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:48,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-05-01 07:13:48,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489245736] [2021-05-01 07:13:48,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-01 07:13:48,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:48,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-01 07:13:48,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=4230, Unknown=0, NotChecked=0, Total=4422 [2021-05-01 07:13:48,130 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 65 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:55,709 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2021-05-01 07:13:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-01 07:13:55,711 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2021-05-01 07:13:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:55,712 INFO L225 Difference]: With dead ends: 94 [2021-05-01 07:13:55,712 INFO L226 Difference]: Without dead ends: 80 [2021-05-01 07:13:55,713 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 7584.2ms TimeCoverageRelationStatistics Valid=584, Invalid=16446, Unknown=0, NotChecked=0, Total=17030 [2021-05-01 07:13:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-01 07:13:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-05-01 07:13:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 71 states have (on average 1.028169014084507) internal successors, (73), 72 states have internal predecessors, (73), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-05-01 07:13:55,721 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 75 [2021-05-01 07:13:55,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:55,721 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-05-01 07:13:55,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 64 states have (on average 1.078125) internal successors, (69), 63 states have internal predecessors, (69), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:13:55,721 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-05-01 07:13:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-01 07:13:55,721 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:55,721 INFO L519 BasicCegarLoop]: trace histogram [56, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:55,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-01 07:13:55,722 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:55,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:55,722 INFO L82 PathProgramCache]: Analyzing trace with hash -307947188, now seen corresponding path program 56 times [2021-05-01 07:13:55,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:55,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136560338] [2021-05-01 07:13:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:55,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:55,737 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1715 v_main_~n~0_64) InVars {main_~i~0=v_main_~i~0_1715, main_~n~0=v_main_~n~0_64} OutVars{main_~i~0=v_main_~i~0_1715, main_~n~0=v_main_~n~0_64} AuxVars[] AssignedVars[] [2021-05-01 07:13:55,739 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:13:55,740 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,746 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,751 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:55,752 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:55,756 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:55,761 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,765 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,774 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,779 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,783 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,787 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,791 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,795 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,799 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,800 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:13:55,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:13:55,826 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:55,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:55,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:55,848 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:13:55,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:55,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:55,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:55,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:55,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:55,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:55,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:55,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:55,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:55,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:56,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:56,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:13:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:56,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:13:56,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:13:56,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,096 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:13:56,156 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,157 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:56,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,190 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:56,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,227 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:56,267 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,268 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:56,307 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,308 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:56,348 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,349 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:56,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,392 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:56,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,436 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:56,483 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,484 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:56,525 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,526 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:56,575 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,577 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:56,620 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,621 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:56,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,666 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:56,726 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:56,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,772 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:56,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,823 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:56,870 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:56,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:56,919 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:56,973 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:56,974 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:57,016 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:57,017 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:57,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,065 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:57,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,129 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:57,183 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:57,184 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:57,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,234 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:57,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,303 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:57,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,370 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:57,427 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:57,429 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:57,486 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:57,487 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:57,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,540 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:57,603 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:57,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:57,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,664 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:57,741 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:57,742 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:57,802 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:57,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:57,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,869 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:57,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:57,941 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:58,014 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:58,016 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:58,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:58,083 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:58,163 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:58,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:58,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:58,232 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:13:58,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:58,315 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:58,397 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:58,398 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:58,478 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:58,485 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:58,563 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:58,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:58,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:58,644 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:58,725 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:58,726 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:58,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:58,805 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:13:58,893 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:58,894 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:58,978 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:58,980 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:13:59,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:59,070 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:59,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:59,164 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:13:59,267 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:59,268 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:59,357 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:59,357 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:13:59,447 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:59,448 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:59,540 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:13:59,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:13:59,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:59,631 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:13:59,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:59,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:59,728 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:59,728 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136560338] [2021-05-01 07:13:59,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2136560338] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:59,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:59,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-01 07:13:59,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140228960] [2021-05-01 07:13:59,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-01 07:13:59,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:59,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-01 07:13:59,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=4307, Unknown=0, NotChecked=0, Total=4556 [2021-05-01 07:13:59,730 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:14:07,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:14:07,383 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2021-05-01 07:14:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-01 07:14:07,385 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2021-05-01 07:14:07,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:14:07,385 INFO L225 Difference]: With dead ends: 95 [2021-05-01 07:14:07,385 INFO L226 Difference]: Without dead ends: 81 [2021-05-01 07:14:07,387 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2716 ImplicationChecksByTransitivity, 8306.6ms TimeCoverageRelationStatistics Valid=703, Invalid=16853, Unknown=0, NotChecked=0, Total=17556 [2021-05-01 07:14:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-01 07:14:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-05-01 07:14:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:14:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2021-05-01 07:14:07,397 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2021-05-01 07:14:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:14:07,397 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2021-05-01 07:14:07,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 64 states have internal predecessors, (70), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:14:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2021-05-01 07:14:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-01 07:14:07,398 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:14:07,398 INFO L519 BasicCegarLoop]: trace histogram [57, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:14:07,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-01 07:14:07,398 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:14:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:14:07,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1965138820, now seen corresponding path program 57 times [2021-05-01 07:14:07,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:14:07,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964646767] [2021-05-01 07:14:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:14:07,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:07,406 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1774 v_main_~n~0_65) InVars {main_~i~0=v_main_~i~0_1774, main_~n~0=v_main_~n~0_65} OutVars{main_~i~0=v_main_~i~0_1774, main_~n~0=v_main_~n~0_65} AuxVars[] AssignedVars[] [2021-05-01 07:14:07,408 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:14:07,410 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,414 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,419 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:07,419 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:14:07,423 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,426 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:07,429 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,432 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,437 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,440 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,443 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,446 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,449 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,452 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,454 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,455 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:14:07,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:14:07,479 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:14:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:07,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:07,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:07,507 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:14:07,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:07,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:07,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:14:07,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:14:07,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:07,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:07,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:07,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:14:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:07,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:07,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:14:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:07,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:14:07,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:14:07,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,691 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:14:07,729 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:07,744 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:07,765 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:07,772 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:07,792 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:07,793 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:07,815 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:07,816 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:07,840 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:07,841 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:07,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,869 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:07,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,907 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:07,945 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:07,946 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:07,974 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:07,975 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:08,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,003 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:08,045 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,046 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:08,083 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:08,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,120 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:08,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,158 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:08,201 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,202 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:08,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,244 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:08,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,294 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:08,342 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:08,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,384 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:08,441 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:08,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,485 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:08,535 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,536 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:08,586 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:08,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,638 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:08,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,691 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:08,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,752 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:08,814 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,815 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:08,872 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,873 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:08,933 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:08,934 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:08,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,991 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:09,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,054 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:09,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,127 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:09,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,190 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:09,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,259 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:09,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,331 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:09,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,400 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:09,478 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:09,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:09,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,546 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:09,623 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:09,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:09,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,703 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:09,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,779 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:09,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,865 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:09,941 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:09,941 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:10,021 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:10,022 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:10,095 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:10,096 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:10,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,175 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:10,260 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:10,261 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:10,346 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:10,347 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:10,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,423 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:10,522 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:10,523 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:10,600 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:10,601 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:10,687 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:10,688 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:10,769 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:10,770 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:10,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,857 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:10,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,950 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:11,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:11,043 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:11,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:11,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:11,145 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:14:11,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964646767] [2021-05-01 07:14:11,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [964646767] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:14:11,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:14:11,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2021-05-01 07:14:11,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696004988] [2021-05-01 07:14:11,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-01 07:14:11,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:14:11,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-01 07:14:11,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=4494, Unknown=0, NotChecked=0, Total=4692 [2021-05-01 07:14:11,146 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:14:19,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:14:19,103 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2021-05-01 07:14:19,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-01 07:14:19,104 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 77 [2021-05-01 07:14:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:14:19,105 INFO L225 Difference]: With dead ends: 96 [2021-05-01 07:14:19,105 INFO L226 Difference]: Without dead ends: 82 [2021-05-01 07:14:19,106 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2917 ImplicationChecksByTransitivity, 8183.2ms TimeCoverageRelationStatistics Valid=602, Invalid=17488, Unknown=0, NotChecked=0, Total=18090 [2021-05-01 07:14:19,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-01 07:14:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2021-05-01 07:14:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:14:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-05-01 07:14:19,115 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 77 [2021-05-01 07:14:19,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:14:19,115 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-05-01 07:14:19,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 65 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:14:19,115 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-05-01 07:14:19,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-01 07:14:19,116 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:14:19,116 INFO L519 BasicCegarLoop]: trace histogram [58, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:14:19,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-01 07:14:19,116 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:14:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:14:19,116 INFO L82 PathProgramCache]: Analyzing trace with hash -583638964, now seen corresponding path program 58 times [2021-05-01 07:14:19,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:14:19,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880897850] [2021-05-01 07:14:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:14:19,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:19,121 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1834 v_main_~n~0_66) InVars {main_~i~0=v_main_~i~0_1834, main_~n~0=v_main_~n~0_66} OutVars{main_~i~0=v_main_~i~0_1834, main_~n~0=v_main_~n~0_66} AuxVars[] AssignedVars[] [2021-05-01 07:14:19,123 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:14:19,124 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,128 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,133 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:19,133 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:14:19,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,145 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:19,149 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,154 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,157 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,161 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,164 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,168 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,172 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,175 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,177 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:14:19,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:14:19,210 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:14:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:19,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:19,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:19,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:19,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:19,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:14:19,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:14:19,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:19,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:19,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:19,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:14:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:19,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:19,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:14:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:19,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:14:19,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:14:19,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,458 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:14:19,507 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,508 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:19,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,528 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:19,557 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,558 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:19,584 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:19,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,608 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:19,641 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:19,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,668 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:19,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,702 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:19,739 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,740 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:19,770 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,771 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:19,802 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,802 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:19,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,835 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:19,880 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,881 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:19,921 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:19,922 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:19,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:19,961 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:20,017 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,018 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:20,059 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,060 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:20,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,104 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:20,157 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,158 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:20,204 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,205 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:20,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,251 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:20,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,306 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:20,365 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,366 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:20,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,417 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:20,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,477 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:20,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,537 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:20,599 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:20,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,655 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:20,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,717 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:20,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:20,781 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:20,845 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,846 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:20,904 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,904 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:20,972 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:20,973 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:21,033 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:21,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:21,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:21,096 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:21,168 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:21,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:21,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:21,234 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:21,307 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:21,308 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:21,376 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:21,377 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:21,447 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:21,448 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:21,520 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:21,521 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:21,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:21,596 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:21,684 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:21,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:21,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:21,761 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:21,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:21,846 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:21,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:21,931 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:22,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:22,018 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:22,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:22,105 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:22,194 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:22,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:22,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:22,278 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:22,374 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:22,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:22,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:22,462 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:22,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:22,559 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:22,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:22,661 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:22,761 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:22,762 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:22,857 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:22,858 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:22,952 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:22,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:23,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:23,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:23,047 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:14:23,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880897850] [2021-05-01 07:14:23,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1880897850] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:14:23,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:14:23,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-01 07:14:23,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362119972] [2021-05-01 07:14:23,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-01 07:14:23,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:14:23,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-01 07:14:23,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=4629, Unknown=0, NotChecked=0, Total=4830 [2021-05-01 07:14:23,048 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:14:31,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:14:31,832 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2021-05-01 07:14:31,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-01 07:14:31,833 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 78 [2021-05-01 07:14:31,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:14:31,834 INFO L225 Difference]: With dead ends: 97 [2021-05-01 07:14:31,834 INFO L226 Difference]: Without dead ends: 83 [2021-05-01 07:14:31,835 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2996 ImplicationChecksByTransitivity, 8651.2ms TimeCoverageRelationStatistics Valid=611, Invalid=18021, Unknown=0, NotChecked=0, Total=18632 [2021-05-01 07:14:31,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-01 07:14:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-05-01 07:14:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 74 states have (on average 1.027027027027027) internal successors, (76), 75 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:14:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2021-05-01 07:14:31,857 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 78 [2021-05-01 07:14:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:14:31,858 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2021-05-01 07:14:31,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 66 states have internal predecessors, (72), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:14:31,858 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2021-05-01 07:14:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-01 07:14:31,858 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:14:31,858 INFO L519 BasicCegarLoop]: trace histogram [59, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:14:31,859 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-01 07:14:31,859 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:14:31,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:14:31,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2008628356, now seen corresponding path program 59 times [2021-05-01 07:14:31,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:14:31,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791126603] [2021-05-01 07:14:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:14:31,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:31,866 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1895 v_main_~n~0_67) InVars {main_~i~0=v_main_~i~0_1895, main_~n~0=v_main_~n~0_67} OutVars{main_~i~0=v_main_~i~0_1895, main_~n~0=v_main_~n~0_67} AuxVars[] AssignedVars[] [2021-05-01 07:14:31,868 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:14:31,870 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,875 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:31,878 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,879 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:14:31,882 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,885 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:31,888 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,891 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,895 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,898 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,904 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,907 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,910 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,913 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,914 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:14:31,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:14:31,942 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:14:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:31,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:31,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:31,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:31,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:31,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:14:32,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:14:32,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:32,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:32,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:32,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:14:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:32,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:32,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:14:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:32,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:14:32,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:14:32,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,195 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:14:32,232 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,232 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:32,253 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,254 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:32,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,278 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:32,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,313 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:32,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,354 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:32,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,394 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:32,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,431 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:32,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,466 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:32,506 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:32,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,545 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:32,597 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,598 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:32,636 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,637 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:32,672 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,673 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:32,710 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,713 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:32,766 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:32,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,814 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:32,863 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:32,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,908 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:32,966 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:32,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:33,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,020 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:33,074 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:33,076 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:33,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,129 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:33,198 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:33,199 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:33,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,255 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:33,319 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:33,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:33,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,379 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:33,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,447 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:33,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,510 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:33,581 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:33,582 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:33,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,655 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:33,723 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:33,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:33,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,795 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:33,873 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:33,874 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:33,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,939 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:34,026 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:34,027 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:34,096 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:34,097 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:34,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,172 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:34,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,259 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:34,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,337 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:34,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,432 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:34,515 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:34,516 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:34,600 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:34,601 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:34,682 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:34,683 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:34,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,765 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:34,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,857 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:34,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,949 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:35,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:35,047 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:35,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:35,143 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:35,237 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:35,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:35,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:35,328 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:35,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:35,440 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:35,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:35,543 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:35,648 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:35,649 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:35,751 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:35,752 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:35,853 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:35,854 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:35,965 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:35,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:36,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:36,074 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:36,195 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:36,196 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:36,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:36,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:36,303 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:14:36,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791126603] [2021-05-01 07:14:36,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1791126603] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:14:36,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:14:36,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2021-05-01 07:14:36,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847670470] [2021-05-01 07:14:36,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-01 07:14:36,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:14:36,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-01 07:14:36,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=4709, Unknown=0, NotChecked=0, Total=4970 [2021-05-01 07:14:36,305 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:14:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:14:45,772 INFO L93 Difference]: Finished difference Result 98 states and 101 transitions. [2021-05-01 07:14:45,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-01 07:14:45,774 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 79 [2021-05-01 07:14:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:14:45,774 INFO L225 Difference]: With dead ends: 98 [2021-05-01 07:14:45,774 INFO L226 Difference]: Without dead ends: 84 [2021-05-01 07:14:45,776 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2947 ImplicationChecksByTransitivity, 9671.5ms TimeCoverageRelationStatistics Valid=736, Invalid=18446, Unknown=0, NotChecked=0, Total=19182 [2021-05-01 07:14:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-01 07:14:45,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2021-05-01 07:14:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:14:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2021-05-01 07:14:45,785 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2021-05-01 07:14:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:14:45,785 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2021-05-01 07:14:45,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 67 states have internal predecessors, (73), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:14:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2021-05-01 07:14:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-01 07:14:45,786 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:14:45,786 INFO L519 BasicCegarLoop]: trace histogram [60, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:14:45,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-05-01 07:14:45,786 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:14:45,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:14:45,786 INFO L82 PathProgramCache]: Analyzing trace with hash 764536652, now seen corresponding path program 60 times [2021-05-01 07:14:45,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:14:45,787 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923077975] [2021-05-01 07:14:45,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:14:45,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:45,795 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1957 v_main_~n~0_68) InVars {main_~i~0=v_main_~i~0_1957, main_~n~0=v_main_~n~0_68} OutVars{main_~i~0=v_main_~i~0_1957, main_~n~0=v_main_~n~0_68} AuxVars[] AssignedVars[] [2021-05-01 07:14:45,798 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:14:45,799 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,804 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:45,808 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,809 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:14:45,812 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:45,817 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,821 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,825 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,829 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,833 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,836 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,839 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,843 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,846 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,849 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,850 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:14:45,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:14:45,879 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:14:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:45,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:45,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:45,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:45,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:45,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:14:45,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:14:45,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:45,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:46,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:46,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:46,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:46,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:14:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:46,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:14:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:46,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:14:46,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:14:46,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,208 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:14:46,278 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,280 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:46,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,314 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:46,358 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,360 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:46,403 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,404 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:46,454 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,455 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:46,507 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,508 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:46,554 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:46,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,604 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:46,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,668 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:46,740 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,741 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:46,795 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,796 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:46,851 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:46,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:46,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,913 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:46,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:46,993 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:47,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:47,065 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:47,145 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:47,146 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:47,220 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:47,221 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:47,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:47,287 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:47,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:47,369 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:47,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:47,473 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:47,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:47,545 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:47,612 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:47,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:47,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:47,677 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:47,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:47,745 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:47,823 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:47,824 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:47,896 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:47,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:47,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:47,959 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:48,031 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:48,032 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:48,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:48,110 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:48,188 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:48,189 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:48,258 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:48,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:48,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:48,340 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:48,423 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:48,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:48,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:48,491 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:48,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:48,582 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:48,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:48,672 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:48,760 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:48,761 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:48,852 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:48,853 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:48,930 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:48,931 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:49,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:49,022 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:49,122 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:49,123 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:49,210 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:49,212 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:49,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:49,310 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:49,406 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:49,407 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:49,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:49,510 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:49,608 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:49,609 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:49,711 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:49,712 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:49,812 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:49,813 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:49,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:49,917 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:50,031 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:50,032 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:50,137 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:50,138 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:14:50,250 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:50,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:14:50,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:50,359 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:14:50,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:50,488 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:14:50,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:50,608 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:14:50,738 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:50,739 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:50,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:50,851 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:14:50,981 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:50,982 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:51,102 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:14:51,104 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:14:51,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:51,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:51,224 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:14:51,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923077975] [2021-05-01 07:14:51,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1923077975] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:14:51,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:14:51,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-01 07:14:51,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561194509] [2021-05-01 07:14:51,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-01 07:14:51,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:14:51,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-01 07:14:51,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=4847, Unknown=0, NotChecked=0, Total=5112 [2021-05-01 07:14:51,226 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:15:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:15:02,199 INFO L93 Difference]: Finished difference Result 99 states and 102 transitions. [2021-05-01 07:15:02,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-01 07:15:02,201 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2021-05-01 07:15:02,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:15:02,202 INFO L225 Difference]: With dead ends: 99 [2021-05-01 07:15:02,202 INFO L226 Difference]: Without dead ends: 85 [2021-05-01 07:15:02,204 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3026 ImplicationChecksByTransitivity, 11099.5ms TimeCoverageRelationStatistics Valid=747, Invalid=18993, Unknown=0, NotChecked=0, Total=19740 [2021-05-01 07:15:02,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-01 07:15:02,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-05-01 07:15:02,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:15:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2021-05-01 07:15:02,212 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 80 [2021-05-01 07:15:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:15:02,212 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2021-05-01 07:15:02,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 68 states have internal predecessors, (74), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:15:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2021-05-01 07:15:02,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-01 07:15:02,212 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:15:02,213 INFO L519 BasicCegarLoop]: trace histogram [61, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:15:02,213 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-05-01 07:15:02,213 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:15:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:15:02,213 INFO L82 PathProgramCache]: Analyzing trace with hash 852399492, now seen corresponding path program 61 times [2021-05-01 07:15:02,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:15:02,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872044527] [2021-05-01 07:15:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:15:02,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:02,228 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2020 v_main_~n~0_69) InVars {main_~i~0=v_main_~i~0_2020, main_~n~0=v_main_~n~0_69} OutVars{main_~i~0=v_main_~i~0_2020, main_~n~0=v_main_~n~0_69} AuxVars[] AssignedVars[] [2021-05-01 07:15:02,230 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:15:02,235 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,239 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,242 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,246 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,250 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,254 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,255 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,274 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,281 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:02,283 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:15:02,289 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,293 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,298 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:02,302 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,307 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,309 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:15:02,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:15:02,354 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:15:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:02,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:02,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:15:02,389 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:15:02,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:02,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:15:02,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:15:02,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:15:02,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:02,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:02,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:02,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:15:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:02,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:02,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:15:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:02,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:15:02,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:15:02,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,683 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:15:02,747 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:02,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:02,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,775 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:02,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,812 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:02,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,849 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:02,891 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:02,892 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:02,936 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:02,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:02,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:02,971 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:03,020 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:03,021 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:03,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,060 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:03,111 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:03,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:03,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,143 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:03,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,187 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:03,241 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:03,242 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:03,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,276 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:03,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,318 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:03,359 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:03,361 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:03,410 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:03,412 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:03,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,473 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:03,526 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:03,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:03,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,585 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:03,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,661 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:03,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,737 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:03,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,816 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:03,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:03,892 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:03,968 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:03,969 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:04,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:04,037 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:04,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:04,118 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:04,198 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:04,199 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:04,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:04,269 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:04,348 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:04,349 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:04,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:04,424 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:04,520 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:04,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:04,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:04,636 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:04,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:04,733 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:04,833 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:04,834 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:04,917 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:04,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:05,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:05,002 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:05,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:05,105 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:05,201 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:05,203 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:05,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:05,291 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:05,390 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:05,392 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:05,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:05,513 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:05,670 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:05,672 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:05,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:05,795 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:05,906 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:05,907 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:06,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:06,001 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:06,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:06,119 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:06,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:06,235 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:06,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:06,348 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:06,472 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:06,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:06,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:06,592 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:06,720 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:06,721 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:06,829 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:06,830 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:06,946 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:06,948 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:07,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:07,066 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:07,219 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:07,220 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:07,345 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:07,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:07,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:07,472 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:07,639 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:07,641 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:07,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:07,805 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:07,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:07,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:07,955 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:15:07,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872044527] [2021-05-01 07:15:07,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [872044527] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:15:07,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:15:07,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2021-05-01 07:15:07,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995132648] [2021-05-01 07:15:07,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-01 07:15:07,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:15:07,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-01 07:15:07,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=5046, Unknown=0, NotChecked=0, Total=5256 [2021-05-01 07:15:07,957 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:15:20,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:15:20,317 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2021-05-01 07:15:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-01 07:15:20,320 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2021-05-01 07:15:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:15:20,321 INFO L225 Difference]: With dead ends: 100 [2021-05-01 07:15:20,321 INFO L226 Difference]: Without dead ends: 86 [2021-05-01 07:15:20,323 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 12468.6ms TimeCoverageRelationStatistics Valid=638, Invalid=19668, Unknown=0, NotChecked=0, Total=20306 [2021-05-01 07:15:20,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-01 07:15:20,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2021-05-01 07:15:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:15:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2021-05-01 07:15:20,333 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 81 [2021-05-01 07:15:20,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:15:20,333 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2021-05-01 07:15:20,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 70 states have (on average 1.0714285714285714) internal successors, (75), 69 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:15:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2021-05-01 07:15:20,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-01 07:15:20,334 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:15:20,334 INFO L519 BasicCegarLoop]: trace histogram [62, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:15:20,334 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-05-01 07:15:20,335 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:15:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:15:20,335 INFO L82 PathProgramCache]: Analyzing trace with hash -718819764, now seen corresponding path program 62 times [2021-05-01 07:15:20,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:15:20,335 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614119969] [2021-05-01 07:15:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:15:20,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:20,343 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2084 v_main_~n~0_70) InVars {main_~i~0=v_main_~i~0_2084, main_~n~0=v_main_~n~0_70} OutVars{main_~i~0=v_main_~i~0_2084, main_~n~0=v_main_~n~0_70} AuxVars[] AssignedVars[] [2021-05-01 07:15:20,346 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:15:20,347 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,353 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,359 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:20,360 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:15:20,364 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:20,370 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,376 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,381 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,387 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,392 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,396 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,401 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,405 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,410 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,414 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,416 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:15:20,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:15:20,461 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:15:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:20,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:20,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:15:20,497 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:15:20,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:20,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:15:20,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:15:20,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:15:20,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:20,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:20,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:20,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:20,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:15:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:20,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:20,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:15:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:20,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:15:20,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:15:20,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:20,838 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:15:20,904 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:20,906 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:20,939 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:20,941 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:20,975 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:20,977 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:21,016 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,017 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:21,062 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,063 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:21,114 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:21,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:21,163 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:21,220 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:21,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:21,257 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:21,311 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,312 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:21,361 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,362 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:21,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:21,407 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:21,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:21,459 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:21,513 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:21,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:21,569 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:21,629 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,630 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:21,679 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,680 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:21,730 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:21,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:21,792 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:21,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:21,868 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:21,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:21,933 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:21,996 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:21,998 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:22,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:22,063 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:22,151 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:22,152 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:22,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:22,232 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:22,319 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:22,320 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:22,410 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:22,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:22,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:22,490 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:22,584 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:22,585 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:22,675 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:22,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:22,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:22,750 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:22,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:22,842 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:22,949 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:22,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:23,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:23,051 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:23,157 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:23,159 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:23,261 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:23,262 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:23,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:23,351 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:23,465 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:23,467 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:23,574 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:23,575 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:23,670 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:23,671 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:23,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:23,780 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:23,899 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:23,900 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:23,997 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:23,998 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:24,118 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:24,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:24,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:24,218 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:24,349 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:24,350 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:24,470 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:24,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:24,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:24,586 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:24,722 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:24,724 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:24,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:24,833 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:24,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:24,973 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:25,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:25,099 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:25,247 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:25,248 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:25,364 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:25,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:25,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:25,502 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:25,637 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:25,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:25,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:25,778 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:25,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:25,917 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:26,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:26,075 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:26,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:26,217 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:26,378 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:26,379 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:26,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:26,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:26,546 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:15:26,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614119969] [2021-05-01 07:15:26,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [614119969] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:15:26,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:15:26,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-01 07:15:26,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033546198] [2021-05-01 07:15:26,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-01 07:15:26,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:15:26,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-01 07:15:26,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=5189, Unknown=0, NotChecked=0, Total=5402 [2021-05-01 07:15:26,548 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:15:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:15:39,785 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2021-05-01 07:15:39,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-01 07:15:39,787 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 82 [2021-05-01 07:15:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:15:39,788 INFO L225 Difference]: With dead ends: 101 [2021-05-01 07:15:39,788 INFO L226 Difference]: Without dead ends: 87 [2021-05-01 07:15:39,790 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3322 ImplicationChecksByTransitivity, 13224.6ms TimeCoverageRelationStatistics Valid=647, Invalid=20233, Unknown=0, NotChecked=0, Total=20880 [2021-05-01 07:15:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-01 07:15:39,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2021-05-01 07:15:39,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 79 states have internal predecessors, (80), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:15:39,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2021-05-01 07:15:39,797 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 82 [2021-05-01 07:15:39,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:15:39,798 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2021-05-01 07:15:39,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 70 states have internal predecessors, (76), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:15:39,798 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2021-05-01 07:15:39,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-01 07:15:39,798 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:15:39,798 INFO L519 BasicCegarLoop]: trace histogram [63, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:15:39,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-05-01 07:15:39,799 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:15:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:15:39,799 INFO L82 PathProgramCache]: Analyzing trace with hash 2112990852, now seen corresponding path program 63 times [2021-05-01 07:15:39,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:15:39,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300239923] [2021-05-01 07:15:39,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:15:39,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:39,819 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2149 v_main_~n~0_71) InVars {main_~i~0=v_main_~i~0_2149, main_~n~0=v_main_~n~0_71} OutVars{main_~i~0=v_main_~i~0_2149, main_~n~0=v_main_~n~0_71} AuxVars[] AssignedVars[] [2021-05-01 07:15:39,821 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:15:39,823 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,829 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:39,833 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,833 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:15:39,838 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,842 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:39,845 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,850 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,856 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,860 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,864 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,867 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,873 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,876 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,880 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,881 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:15:39,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:15:39,911 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:15:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:39,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:39,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:15:39,944 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:15:39,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:39,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:15:39,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:15:39,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:39,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:15:40,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:40,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:40,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:40,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:40,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:15:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:40,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:40,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:15:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:40,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:15:40,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:15:40,235 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:15:40,237 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:40,264 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,265 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:40,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,294 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:40,338 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,339 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:40,373 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,375 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:40,409 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,410 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:40,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,446 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:40,497 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,498 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:40,538 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,539 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:40,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,582 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:40,633 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,635 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:40,682 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:40,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,728 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:40,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:40,783 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:40,845 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,846 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:40,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,898 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:40,951 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:40,952 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:41,010 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:41,012 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:41,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:41,073 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:41,144 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:41,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:41,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:41,206 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:41,275 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:41,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:41,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:41,341 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:41,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:41,417 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:41,499 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:41,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:41,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:41,569 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:41,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:41,649 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:41,734 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:41,735 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:41,809 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:41,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:41,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:41,887 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:41,974 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:41,975 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:42,068 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:42,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:42,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:42,157 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:42,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:42,261 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:42,368 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:42,369 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:42,454 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:42,455 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:42,561 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:42,562 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:42,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:42,657 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:42,768 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:42,770 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:42,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:42,870 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:42,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:42,975 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:43,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:43,096 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:43,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:43,207 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:43,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:43,330 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:43,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:43,452 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:43,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:43,581 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:43,702 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:43,703 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:43,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:43,823 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:43,954 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:43,955 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:44,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:44,078 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:44,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:44,209 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:44,348 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:44,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:15:44,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:44,473 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:44,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:44,618 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:44,748 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:44,750 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:15:44,886 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:44,887 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:45,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:45,013 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:15:45,171 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:45,172 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:45,315 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:15:45,317 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:15:45,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:45,465 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:45,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:45,631 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:15:45,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:45,786 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:15:45,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:45,952 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:15:46,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:46,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:46,106 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:15:46,106 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300239923] [2021-05-01 07:15:46,106 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1300239923] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:15:46,106 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:15:46,106 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2021-05-01 07:15:46,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253713227] [2021-05-01 07:15:46,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-01 07:15:46,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:15:46,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-01 07:15:46,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=5273, Unknown=0, NotChecked=0, Total=5550 [2021-05-01 07:15:46,108 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:16:00,451 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-05-01 07:16:01,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:16:01,472 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2021-05-01 07:16:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-01 07:16:01,476 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2021-05-01 07:16:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:16:01,477 INFO L225 Difference]: With dead ends: 102 [2021-05-01 07:16:01,477 INFO L226 Difference]: Without dead ends: 88 [2021-05-01 07:16:01,479 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 13975.4ms TimeCoverageRelationStatistics Valid=780, Invalid=20682, Unknown=0, NotChecked=0, Total=21462 [2021-05-01 07:16:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-01 07:16:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2021-05-01 07:16:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 80 states have internal predecessors, (81), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:16:01,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2021-05-01 07:16:01,499 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 83 [2021-05-01 07:16:01,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:16:01,500 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2021-05-01 07:16:01,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 72 states have (on average 1.0694444444444444) internal successors, (77), 71 states have internal predecessors, (77), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:16:01,500 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2021-05-01 07:16:01,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-01 07:16:01,500 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:16:01,501 INFO L519 BasicCegarLoop]: trace histogram [64, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:16:01,501 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-05-01 07:16:01,501 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:16:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:16:01,501 INFO L82 PathProgramCache]: Analyzing trace with hash -295193268, now seen corresponding path program 64 times [2021-05-01 07:16:01,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:16:01,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198716254] [2021-05-01 07:16:01,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:16:01,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:16:01,511 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2215 v_main_~n~0_72) InVars {main_~i~0=v_main_~i~0_2215, main_~n~0=v_main_~n~0_72} OutVars{main_~i~0=v_main_~i~0_2215, main_~n~0=v_main_~n~0_72} AuxVars[] AssignedVars[] [2021-05-01 07:16:01,514 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:16:01,520 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,525 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,531 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,537 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,543 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,549 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,551 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,561 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:16:01,567 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,569 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:16:01,576 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,582 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:16:01,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,601 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,603 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:16:01,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:16:01,669 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:16:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:01,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:01,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:16:01,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:01,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:16:01,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:16:01,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:16:01,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:16:01,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:16:01,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:16:01,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:01,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:16:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:01,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:01,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:16:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:01,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:16:01,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:16:02,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:02,115 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:16:02,184 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,185 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:02,224 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,225 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:02,281 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,282 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:02,331 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,333 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:02,391 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,393 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:02,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:02,449 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:02,517 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,518 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:02,578 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:02,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:02,648 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:02,717 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,719 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:02,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:02,781 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:02,859 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,860 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:02,907 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,909 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:02,979 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:02,980 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:03,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,047 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:03,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,130 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:03,194 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:03,197 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:03,267 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:03,269 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:03,344 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:03,346 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:03,421 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:03,422 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:03,493 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:03,495 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:03,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,571 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:03,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,659 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:03,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,753 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:03,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,851 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:03,949 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:03,951 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:04,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,043 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:04,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,142 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:04,244 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:04,246 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:04,335 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:04,336 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:04,448 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:04,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:04,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,543 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:04,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,648 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:04,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,756 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:04,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,871 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:04,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,991 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:05,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:05,086 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:05,199 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:05,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:05,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:05,304 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:05,429 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:05,430 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:05,564 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:05,565 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:05,689 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:05,691 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:05,810 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:05,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:05,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:05,934 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:06,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:06,067 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:06,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:06,206 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:06,343 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:06,345 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:06,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:06,470 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:06,607 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:06,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:06,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:06,741 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:06,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:06,887 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:07,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:07,047 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:07,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:07,192 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:07,358 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:07,359 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:07,506 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:07,507 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:07,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:07,657 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:07,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:07,823 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:07,982 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:07,984 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:08,135 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:08,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:08,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:08,290 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:08,459 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:08,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:08,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:08,615 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:08,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:08,792 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:08,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:08,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:08,963 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:16:08,963 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198716254] [2021-05-01 07:16:08,963 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1198716254] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:16:08,963 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:16:08,963 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-01 07:16:08,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065503494] [2021-05-01 07:16:08,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-01 07:16:08,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:16:08,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-01 07:16:08,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=5481, Unknown=0, NotChecked=0, Total=5700 [2021-05-01 07:16:08,964 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:16:23,213 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-05-01 07:16:24,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:16:24,802 INFO L93 Difference]: Finished difference Result 103 states and 106 transitions. [2021-05-01 07:16:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-01 07:16:24,805 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 84 [2021-05-01 07:16:24,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:16:24,806 INFO L225 Difference]: With dead ends: 103 [2021-05-01 07:16:24,806 INFO L226 Difference]: Without dead ends: 89 [2021-05-01 07:16:24,808 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3491 ImplicationChecksByTransitivity, 15510.1ms TimeCoverageRelationStatistics Valid=665, Invalid=21387, Unknown=0, NotChecked=0, Total=22052 [2021-05-01 07:16:24,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-01 07:16:24,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2021-05-01 07:16:24,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:16:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2021-05-01 07:16:24,817 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2021-05-01 07:16:24,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:16:24,817 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2021-05-01 07:16:24,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 72 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:16:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2021-05-01 07:16:24,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-01 07:16:24,817 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:16:24,817 INFO L519 BasicCegarLoop]: trace histogram [65, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:16:24,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-05-01 07:16:24,818 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:16:24,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:16:24,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1934456956, now seen corresponding path program 65 times [2021-05-01 07:16:24,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:16:24,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650343632] [2021-05-01 07:16:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:16:24,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:16:24,826 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2282 v_main_~n~0_73) InVars {main_~i~0=v_main_~i~0_2282, main_~n~0=v_main_~n~0_73} OutVars{main_~i~0=v_main_~i~0_2282, main_~n~0=v_main_~n~0_73} AuxVars[] AssignedVars[] [2021-05-01 07:16:24,828 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:16:24,830 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,835 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,841 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:16:24,843 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:16:24,848 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:16:24,855 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,861 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,866 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,872 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,876 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,881 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,886 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,891 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,896 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,903 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:16:24,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:16:24,953 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:16:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:24,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:24,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:24,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:16:24,983 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:16:24,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:25,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:16:25,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:16:25,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:16:25,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:16:25,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:16:25,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:16:25,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:16:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:25,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:25,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:16:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:25,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:16:25,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:16:25,309 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:16:25,311 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:25,342 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:25,343 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:25,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,376 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:25,423 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:25,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:25,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,473 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:25,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,537 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:25,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,607 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:25,660 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:25,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:25,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,708 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:25,776 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:25,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:25,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:25,846 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:25,950 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:25,952 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:26,006 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,007 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:26,064 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,065 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:26,138 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,139 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:26,213 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,215 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:26,283 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,285 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:26,347 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,349 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:26,428 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,430 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:26,514 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,516 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:26,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:26,595 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:26,680 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,682 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:26,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:26,769 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:26,872 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,873 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:26,949 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:26,951 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:27,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:27,039 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:27,158 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:27,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:27,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:27,245 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:27,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:27,357 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:27,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:27,482 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:27,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:27,589 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:27,707 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:27,709 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:27,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:27,827 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:27,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:27,934 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:28,057 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:28,058 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:28,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:28,163 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:28,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:28,282 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:28,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:28,420 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:28,543 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:28,544 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:28,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:28,674 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:28,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:28,806 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:28,944 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:28,946 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:29,070 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:29,071 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:29,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:29,187 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:29,338 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:29,339 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:29,457 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:29,458 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:29,606 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:29,607 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:29,733 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:29,734 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:29,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:29,893 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:30,057 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:30,058 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:30,206 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:30,207 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:30,353 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:30,355 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:30,507 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:30,509 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:30,665 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:30,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:30,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:30,818 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:30,999 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:31,000 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:31,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:31,153 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:31,336 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:31,338 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:31,495 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:31,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:31,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:31,682 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:31,857 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:31,859 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:32,036 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:32,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:32,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:32,205 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:32,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:32,393 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:32,583 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:32,585 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:32,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:32,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:32,751 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:16:32,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650343632] [2021-05-01 07:16:32,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [650343632] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:16:32,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:16:32,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2021-05-01 07:16:32,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729699295] [2021-05-01 07:16:32,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-01 07:16:32,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:16:32,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-01 07:16:32,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=5567, Unknown=0, NotChecked=0, Total=5852 [2021-05-01 07:16:32,753 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:16:49,716 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2021-05-01 07:16:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:16:50,575 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2021-05-01 07:16:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-01 07:16:50,579 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 85 [2021-05-01 07:16:50,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:16:50,579 INFO L225 Difference]: With dead ends: 104 [2021-05-01 07:16:50,579 INFO L226 Difference]: Without dead ends: 90 [2021-05-01 07:16:50,581 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3436 ImplicationChecksByTransitivity, 16868.5ms TimeCoverageRelationStatistics Valid=802, Invalid=21848, Unknown=0, NotChecked=0, Total=22650 [2021-05-01 07:16:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-01 07:16:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2021-05-01 07:16:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:16:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2021-05-01 07:16:50,593 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 85 [2021-05-01 07:16:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:16:50,594 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2021-05-01 07:16:50,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 73 states have internal predecessors, (79), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:16:50,594 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2021-05-01 07:16:50,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-01 07:16:50,594 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:16:50,595 INFO L519 BasicCegarLoop]: trace histogram [66, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:16:50,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-05-01 07:16:50,595 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:16:50,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:16:50,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1212023732, now seen corresponding path program 66 times [2021-05-01 07:16:50,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:16:50,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797113852] [2021-05-01 07:16:50,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:16:50,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:16:50,606 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2350 v_main_~n~0_74) InVars {main_~i~0=v_main_~i~0_2350, main_~n~0=v_main_~n~0_74} OutVars{main_~i~0=v_main_~i~0_2350, main_~n~0=v_main_~n~0_74} AuxVars[] AssignedVars[] [2021-05-01 07:16:50,609 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:16:50,615 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,621 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,626 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,631 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,636 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,641 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,642 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,650 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:16:50,655 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,656 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:16:50,661 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,665 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:16:50,670 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,680 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,682 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:16:50,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:16:50,724 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:16:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:50,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:50,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:16:50,751 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:16:50,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:50,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:16:50,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:16:50,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:16:50,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:16:50,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:16:50,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:16:50,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:50,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:16:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:50,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:16:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:50,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:16:50,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:16:51,107 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:16:51,109 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:51,145 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:51,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:51,186 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:51,248 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,250 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:51,301 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:51,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:51,356 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:51,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:51,409 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:51,470 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,471 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:51,527 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,528 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:51,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:51,589 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:51,655 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,657 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:51,711 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,713 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:51,771 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,772 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:51,842 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,843 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:51,916 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:51,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:51,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:51,984 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:52,062 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:52,064 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:52,169 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:52,171 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:52,260 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:52,261 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:52,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:52,339 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:52,436 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:52,438 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:52,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:52,541 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:52,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:52,655 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:52,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:52,752 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:52,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:52,880 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:53,020 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:53,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:53,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:53,163 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:53,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:53,323 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:53,475 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:53,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:53,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:53,620 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:53,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:53,762 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:53,887 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:53,888 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:54,011 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:54,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:54,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,120 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:54,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,246 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:54,392 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:54,394 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:54,524 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:54,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:54,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,657 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:54,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,804 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:54,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,939 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:55,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:55,098 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:55,266 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:55,267 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:55,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:55,419 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:55,586 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:55,587 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:55,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:55,749 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:16:55,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:55,915 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:56,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:56,079 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:56,240 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:56,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:56,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:56,385 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:56,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:56,585 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:16:56,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:56,751 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:56,958 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:56,959 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:57,125 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:57,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:57,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:57,308 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:57,504 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:57,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:57,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:57,741 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:57,974 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:57,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:58,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:58,172 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:16:58,393 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:58,395 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:58,612 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:58,613 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:16:58,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:58,805 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:59,025 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:59,026 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:59,212 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:59,214 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:59,390 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:59,392 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:16:59,584 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:16:59,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:16:59,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:59,756 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:16:59,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:59,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:59,978 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:16:59,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797113852] [2021-05-01 07:16:59,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [797113852] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:16:59,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:16:59,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [76] imperfect sequences [] total 76 [2021-05-01 07:16:59,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38516626] [2021-05-01 07:16:59,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-01 07:16:59,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:16:59,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-01 07:16:59,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=5717, Unknown=0, NotChecked=0, Total=6006 [2021-05-01 07:16:59,980 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:17:19,823 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-05-01 07:17:20,466 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2021-05-01 07:17:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:17:21,433 INFO L93 Difference]: Finished difference Result 105 states and 108 transitions. [2021-05-01 07:17:21,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-01 07:17:21,438 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 86 [2021-05-01 07:17:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:17:21,438 INFO L225 Difference]: With dead ends: 105 [2021-05-01 07:17:21,438 INFO L226 Difference]: Without dead ends: 91 [2021-05-01 07:17:21,447 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3521 ImplicationChecksByTransitivity, 19732.1ms TimeCoverageRelationStatistics Valid=813, Invalid=22443, Unknown=0, NotChecked=0, Total=23256 [2021-05-01 07:17:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-01 07:17:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-05-01 07:17:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:17:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2021-05-01 07:17:21,456 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 86 [2021-05-01 07:17:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:17:21,456 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2021-05-01 07:17:21,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 74 states have internal predecessors, (80), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:17:21,456 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2021-05-01 07:17:21,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-01 07:17:21,456 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:17:21,456 INFO L519 BasicCegarLoop]: trace histogram [67, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:17:21,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-05-01 07:17:21,457 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:17:21,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:17:21,457 INFO L82 PathProgramCache]: Analyzing trace with hash -291430268, now seen corresponding path program 67 times [2021-05-01 07:17:21,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:17:21,457 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001923751] [2021-05-01 07:17:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:17:21,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:17:21,466 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2419 v_main_~n~0_75) InVars {main_~i~0=v_main_~i~0_2419, main_~n~0=v_main_~n~0_75} OutVars{main_~i~0=v_main_~i~0_2419, main_~n~0=v_main_~n~0_75} AuxVars[] AssignedVars[] [2021-05-01 07:17:21,469 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:17:21,473 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,479 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,485 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,490 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,495 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,500 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,502 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,508 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,515 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:17:21,516 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:17:21,521 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:17:21,528 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,534 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,539 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,544 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,546 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:17:21,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:17:21,596 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:17:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:17:21,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:21,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:17:21,625 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:17:21,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:21,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:17:21,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:17:21,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:17:21,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:17:21,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:17:21,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:17:21,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:17:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:17:21,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:21,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:17:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:17:21,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:17:21,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:21,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:17:22,048 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:17:22,049 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:22,095 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:22,096 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:22,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:22,138 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:22,203 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:22,205 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:22,256 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:22,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:22,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:22,313 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:22,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:22,383 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:22,457 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:22,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:22,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:22,523 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:22,603 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:22,604 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:22,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:22,669 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:22,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:22,746 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:17:22,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:22,825 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:22,910 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:22,911 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:22,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:22,983 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:23,073 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:23,075 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:23,161 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:23,163 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:23,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:23,245 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:23,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:23,340 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:23,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:23,441 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:17:23,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:23,544 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:23,645 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:23,647 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:23,742 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:23,743 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:23,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:23,834 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:23,946 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:23,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:24,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:24,043 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:24,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:24,158 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:24,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:24,271 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:24,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:24,387 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:24,506 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:24,507 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:24,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:24,621 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:24,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:24,754 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:24,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:24,883 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:25,003 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:25,005 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:25,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:25,120 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:25,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:25,241 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:25,381 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:25,383 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:25,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:25,508 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:25,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:25,647 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:25,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:25,792 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:25,932 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:25,933 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:26,063 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:26,065 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:26,198 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:26,200 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:26,339 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:26,341 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:26,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:26,485 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:26,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:26,637 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:26,794 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:26,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:26,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:26,938 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:27,099 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:27,100 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:27,246 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:27,248 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:27,406 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:27,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:27,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,575 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:27,749 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:27,750 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:27,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,913 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:28,090 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:28,092 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:28,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:28,254 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:28,436 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:28,438 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:28,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:28,599 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:28,790 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:28,792 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:28,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:28,961 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:17:29,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:29,151 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:29,340 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:29,342 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:29,526 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:29,527 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:29,715 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:29,717 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:29,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:29,908 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:30,122 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:30,124 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:30,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:30,310 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:30,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:30,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:30,525 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:17:30,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001923751] [2021-05-01 07:17:30,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1001923751] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:17:30,525 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:17:30,525 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2021-05-01 07:17:30,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098610204] [2021-05-01 07:17:30,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-01 07:17:30,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:17:30,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-01 07:17:30,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=5869, Unknown=0, NotChecked=0, Total=6162 [2021-05-01 07:17:30,526 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:17:50,754 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-05-01 07:17:51,346 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-05-01 07:17:53,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:17:53,086 INFO L93 Difference]: Finished difference Result 106 states and 109 transitions. [2021-05-01 07:17:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-01 07:17:53,090 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 87 [2021-05-01 07:17:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:17:53,091 INFO L225 Difference]: With dead ends: 106 [2021-05-01 07:17:53,091 INFO L226 Difference]: Without dead ends: 92 [2021-05-01 07:17:53,093 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 19487.9ms TimeCoverageRelationStatistics Valid=824, Invalid=23046, Unknown=0, NotChecked=0, Total=23870 [2021-05-01 07:17:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-01 07:17:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2021-05-01 07:17:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:17:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2021-05-01 07:17:53,101 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 87 [2021-05-01 07:17:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:17:53,101 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2021-05-01 07:17:53,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 75 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:17:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2021-05-01 07:17:53,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-05-01 07:17:53,101 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:17:53,101 INFO L519 BasicCegarLoop]: trace histogram [68, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:17:53,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-01 07:17:53,102 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:17:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:17:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1817803956, now seen corresponding path program 68 times [2021-05-01 07:17:53,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:17:53,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020353333] [2021-05-01 07:17:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:17:53,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:17:53,112 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2489 v_main_~n~0_76) InVars {main_~i~0=v_main_~i~0_2489, main_~n~0=v_main_~n~0_76} OutVars{main_~i~0=v_main_~i~0_2489, main_~n~0=v_main_~n~0_76} AuxVars[] AssignedVars[] [2021-05-01 07:17:53,116 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:17:53,122 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,128 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,134 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,140 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,152 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,156 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,156 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,162 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,171 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:17:53,172 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:17:53,178 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,184 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,196 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:17:53,203 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,205 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:17:53,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:17:53,252 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:17:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:17:53,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:53,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:17:53,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:53,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:17:53,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:17:53,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:17:53,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:17:53,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:17:53,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:17:53,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:53,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:17:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:17:53,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:53,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:17:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:17:53,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:17:53,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:17:53,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,691 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:17:53,768 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:53,770 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:53,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,821 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:53,885 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:53,887 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:53,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:53,944 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:17:54,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:54,016 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:54,084 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:54,086 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:54,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:54,139 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:54,218 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:54,219 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:54,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:54,291 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:54,382 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:54,385 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:54,448 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:54,450 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:54,509 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:54,510 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:54,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:54,586 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:54,691 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:54,693 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:54,789 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:54,790 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:54,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:54,863 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:54,955 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:54,956 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:55,051 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:55,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:55,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:55,143 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:55,232 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:55,233 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:55,317 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:55,318 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:55,417 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:55,419 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:55,520 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:55,521 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:55,611 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:55,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:55,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:55,712 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:55,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:55,838 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:55,962 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:55,963 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:56,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:56,068 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:56,208 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:56,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:56,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:56,315 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:56,449 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:56,450 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:56,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:56,586 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:56,703 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:56,704 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:56,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:56,829 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:56,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:56,969 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:57,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:57,095 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:57,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:57,237 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:57,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:57,378 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:17:57,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:57,527 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:57,682 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:57,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:57,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:57,813 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:17:57,990 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:57,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:17:58,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:58,121 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:58,295 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:58,297 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:58,444 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:58,445 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:58,598 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:58,599 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:58,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:58,752 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:17:58,917 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:58,919 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:59,084 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:59,086 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:17:59,233 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:59,235 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:59,386 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:59,388 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:59,553 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:17:59,554 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:17:59,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:59,736 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:17:59,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:59,916 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:00,131 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:00,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:00,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:00,326 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:00,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:00,536 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:00,746 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:00,748 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:00,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:00,953 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:18:01,172 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:01,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:01,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:01,368 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:01,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:01,580 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:01,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:01,767 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:18:02,013 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:02,015 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:02,235 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:02,237 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:02,452 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:02,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:02,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:02,668 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:02,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:02,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:02,909 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:18:02,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020353333] [2021-05-01 07:18:02,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2020353333] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:18:02,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:18:02,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [] total 78 [2021-05-01 07:18:02,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267518867] [2021-05-01 07:18:02,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-01 07:18:02,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:18:02,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-01 07:18:02,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=6023, Unknown=0, NotChecked=0, Total=6320 [2021-05-01 07:18:02,911 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:18:24,284 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-05-01 07:18:24,984 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:18:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:18:26,771 INFO L93 Difference]: Finished difference Result 107 states and 110 transitions. [2021-05-01 07:18:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-01 07:18:26,776 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 88 [2021-05-01 07:18:26,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:18:26,776 INFO L225 Difference]: With dead ends: 107 [2021-05-01 07:18:26,776 INFO L226 Difference]: Without dead ends: 93 [2021-05-01 07:18:26,778 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3694 ImplicationChecksByTransitivity, 20941.5ms TimeCoverageRelationStatistics Valid=835, Invalid=23657, Unknown=0, NotChecked=0, Total=24492 [2021-05-01 07:18:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-01 07:18:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-05-01 07:18:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:18:26,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2021-05-01 07:18:26,787 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 88 [2021-05-01 07:18:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:18:26,787 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2021-05-01 07:18:26,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 76 states have internal predecessors, (82), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:18:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2021-05-01 07:18:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-01 07:18:26,787 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:18:26,787 INFO L519 BasicCegarLoop]: trace histogram [69, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:18:26,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-01 07:18:26,787 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:18:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:18:26,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1890748028, now seen corresponding path program 69 times [2021-05-01 07:18:26,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:18:26,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603235378] [2021-05-01 07:18:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:18:26,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:18:26,797 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2560 v_main_~n~0_77) InVars {main_~i~0=v_main_~i~0_2560, main_~n~0=v_main_~n~0_77} OutVars{main_~i~0=v_main_~i~0_2560, main_~n~0=v_main_~n~0_77} AuxVars[] AssignedVars[] [2021-05-01 07:18:26,800 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:18:26,802 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,809 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,817 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:18:26,819 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:18:26,825 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:18:26,834 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,841 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,848 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,854 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,860 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,866 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,871 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,877 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,882 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,889 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,890 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:18:26,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:18:26,940 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:18:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:26,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:26,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:18:26,977 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:18:26,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:27,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:18:27,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:18:27,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:18:27,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:18:27,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:18:27,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:18:27,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:27,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:18:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:27,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:27,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:18:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:27,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:27,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:18:27,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:18:27,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,420 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:18:27,514 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:27,516 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:27,570 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:27,572 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:27,629 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:27,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:27,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,687 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:18:27,751 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:27,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:27,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,805 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:27,884 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:27,886 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:27,960 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:27,962 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:28,042 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:28,044 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:28,120 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:28,121 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:28,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:28,187 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:28,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:28,270 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:18:28,374 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:28,376 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:28,471 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:28,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:28,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:28,552 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:28,646 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:28,648 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:28,742 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:28,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:28,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:28,846 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:28,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:28,960 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:29,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:29,061 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:29,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:29,181 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:29,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:29,303 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:29,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:29,408 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:29,535 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:29,537 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:29,658 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:29,660 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:29,769 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:29,771 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:29,876 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:29,877 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:30,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:30,012 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:18:30,164 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:30,165 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:30,281 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:30,283 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:30,428 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:30,429 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:30,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:30,565 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:18:30,704 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:30,705 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:30,849 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:30,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:30,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:30,991 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:31,142 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:31,144 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:31,312 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:31,314 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:31,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:31,455 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:31,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:31,633 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:31,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:31,823 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:31,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:32,000 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:32,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:32,206 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:32,374 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:32,375 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:32,560 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:32,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:32,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:32,729 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:18:32,928 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:32,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:33,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:33,119 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:33,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:33,305 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:33,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:33,495 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:33,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:33,699 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:33,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:33,927 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:34,134 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:34,136 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:34,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:34,339 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:34,556 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:34,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:18:34,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:34,753 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:34,984 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:34,986 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:35,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:35,191 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:35,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:35,427 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:35,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:35,655 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:35,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:35,895 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:18:36,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:36,158 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:36,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:36,392 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:18:36,650 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:36,651 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:36,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:36,863 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:18:37,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:37,149 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:18:37,392 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:37,394 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:37,662 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:37,664 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:18:37,899 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:18:37,901 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:18:38,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:38,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:38,153 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:18:38,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603235378] [2021-05-01 07:18:38,154 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1603235378] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:18:38,154 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:18:38,154 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2021-05-01 07:18:38,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982760908] [2021-05-01 07:18:38,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-01 07:18:38,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:18:38,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-01 07:18:38,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=6246, Unknown=0, NotChecked=0, Total=6480 [2021-05-01 07:18:38,155 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:19:02,534 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-05-01 07:19:03,385 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:19:05,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:19:05,523 INFO L93 Difference]: Finished difference Result 108 states and 111 transitions. [2021-05-01 07:19:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-01 07:19:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 89 [2021-05-01 07:19:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:19:05,525 INFO L225 Difference]: With dead ends: 108 [2021-05-01 07:19:05,526 INFO L226 Difference]: Without dead ends: 94 [2021-05-01 07:19:05,527 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3931 ImplicationChecksByTransitivity, 23991.6ms TimeCoverageRelationStatistics Valid=710, Invalid=24412, Unknown=0, NotChecked=0, Total=25122 [2021-05-01 07:19:05,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-01 07:19:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-05-01 07:19:05,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:19:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2021-05-01 07:19:05,537 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 89 [2021-05-01 07:19:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:19:05,537 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2021-05-01 07:19:05,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 78 states have (on average 1.064102564102564) internal successors, (83), 77 states have internal predecessors, (83), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:19:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2021-05-01 07:19:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-05-01 07:19:05,538 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:19:05,538 INFO L519 BasicCegarLoop]: trace histogram [70, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:19:05,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-01 07:19:05,539 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:19:05,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:19:05,539 INFO L82 PathProgramCache]: Analyzing trace with hash 142953036, now seen corresponding path program 70 times [2021-05-01 07:19:05,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:19:05,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467474590] [2021-05-01 07:19:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:19:05,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:19:05,551 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2632 v_main_~n~0_78) InVars {main_~i~0=v_main_~i~0_2632, main_~n~0=v_main_~n~0_78} OutVars{main_~i~0=v_main_~i~0_2632, main_~n~0=v_main_~n~0_78} AuxVars[] AssignedVars[] [2021-05-01 07:19:05,554 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:19:05,561 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,568 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,575 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,582 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,595 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,597 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,604 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,613 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:19:05,615 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:19:05,622 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,628 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:19:05,635 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,641 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,650 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,652 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:19:05,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:19:05,729 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:19:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:05,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:05,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:19:05,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:05,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:19:05,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:19:05,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:19:05,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:19:05,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:19:05,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:19:05,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:06,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:19:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:06,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:06,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:06,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:19:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:06,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:06,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:19:06,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:06,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:19:06,236 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2021-05-01 07:19:06,313 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:19:06,315 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:06,363 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:06,365 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:06,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:06,420 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:06,503 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:06,505 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:06,570 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:06,573 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:06,648 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:06,651 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:06,736 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:06,739 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:06,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:06,823 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:06,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:06,924 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:07,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:07,041 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:07,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:07,151 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:07,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:07,252 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:07,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:07,345 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:07,459 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:07,461 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:07,563 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:07,565 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:07,660 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:07,662 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:07,751 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:07,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:07,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:07,851 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:07,994 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:07,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:08,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:08,103 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:08,217 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:08,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:08,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:08,341 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:08,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:08,488 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:08,611 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:08,613 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:08,734 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:08,736 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:08,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:08,864 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:08,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:08,998 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:09,140 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:09,142 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:09,279 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:09,281 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:09,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:09,408 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:09,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:09,536 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:09,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:09,704 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:09,865 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:09,866 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:10,022 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:10,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:10,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:10,186 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:10,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:10,363 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:10,545 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:10,547 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:10,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:10,716 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:10,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:10,883 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:11,089 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:11,090 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:11,245 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:11,247 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:11,432 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:11,434 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:11,624 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:11,625 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:11,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:11,799 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:12,028 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:12,029 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:12,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:12,199 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:12,428 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:12,430 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:12,619 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:12,620 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:12,839 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:12,841 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:13,035 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:13,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:13,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:13,251 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:13,480 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:13,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:13,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:13,709 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:13,955 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:13,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:14,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:14,186 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:14,436 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:14,438 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:14,682 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:14,684 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:14,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:14,918 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:15,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:15,187 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:15,432 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:15,434 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:15,695 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:15,697 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:15,933 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:15,935 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:16,208 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:16,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:16,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:16,413 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:16,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:16,694 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:16,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:16,951 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:17,231 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:17,232 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:17,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:17,507 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:17,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:17,782 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:18,106 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:18,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:18,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:18,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:18,365 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:19:18,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467474590] [2021-05-01 07:19:18,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [467474590] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:19:18,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:19:18,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [80] imperfect sequences [] total 80 [2021-05-01 07:19:18,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146590891] [2021-05-01 07:19:18,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-01 07:19:18,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:19:18,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-01 07:19:18,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=6337, Unknown=0, NotChecked=0, Total=6642 [2021-05-01 07:19:18,367 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:19:46,475 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-05-01 07:19:47,157 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2021-05-01 07:19:49,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:19:49,156 INFO L93 Difference]: Finished difference Result 109 states and 112 transitions. [2021-05-01 07:19:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-01 07:19:49,160 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 90 [2021-05-01 07:19:49,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:19:49,161 INFO L225 Difference]: With dead ends: 109 [2021-05-01 07:19:49,161 INFO L226 Difference]: Without dead ends: 95 [2021-05-01 07:19:49,163 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3871 ImplicationChecksByTransitivity, 26510.0ms TimeCoverageRelationStatistics Valid=857, Invalid=24903, Unknown=0, NotChecked=0, Total=25760 [2021-05-01 07:19:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-01 07:19:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-05-01 07:19:49,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 87 states have internal predecessors, (88), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:19:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-05-01 07:19:49,171 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 90 [2021-05-01 07:19:49,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:19:49,171 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-05-01 07:19:49,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 78 states have internal predecessors, (84), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:19:49,171 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-05-01 07:19:49,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-01 07:19:49,171 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:19:49,172 INFO L519 BasicCegarLoop]: trace histogram [71, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:19:49,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-05-01 07:19:49,172 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:19:49,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:19:49,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1236823420, now seen corresponding path program 71 times [2021-05-01 07:19:49,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:19:49,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377758781] [2021-05-01 07:19:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:19:49,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:19:49,181 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2705 v_main_~n~0_79) InVars {main_~i~0=v_main_~i~0_2705, main_~n~0=v_main_~n~0_79} OutVars{main_~i~0=v_main_~i~0_2705, main_~n~0=v_main_~n~0_79} AuxVars[] AssignedVars[] [2021-05-01 07:19:49,191 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:19:49,198 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,203 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,209 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,215 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,221 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,226 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,228 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,238 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:19:49,244 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,245 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:19:49,252 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,257 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:19:49,264 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,270 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,277 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,279 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:19:49,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:19:49,341 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:19:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:49,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:49,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:19:49,372 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:19:49,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:49,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:19:49,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:19:49,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:19:49,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:19:49,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:19:49,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:19:49,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:49,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:19:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:49,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:49,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:19:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:49,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:19:49,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:19:49,836 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:19:49,838 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:49,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,890 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:49,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:49,956 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:50,031 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:50,033 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:50,097 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:50,099 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:50,161 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:50,162 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:50,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:50,227 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:50,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:50,314 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:50,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:50,399 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:50,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:50,496 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:50,596 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:50,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:50,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:50,679 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:50,784 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:50,786 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:50,869 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:50,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:50,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:50,963 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:51,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:51,069 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:51,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:51,184 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:51,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:51,290 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:51,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:51,403 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:51,523 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:51,525 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:51,629 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:51,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:51,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:51,733 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:51,871 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:51,873 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:51,985 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:51,986 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:52,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:52,107 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:52,246 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:52,248 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:52,370 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:52,372 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:52,501 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:52,503 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:52,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:52,630 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:52,784 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:52,786 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:52,918 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:52,920 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:53,073 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:53,075 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:53,221 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:53,223 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:53,364 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:53,366 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:53,511 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:53,513 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:53,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:53,654 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:53,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:53,822 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:53,994 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:53,996 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:54,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:54,150 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:54,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:54,321 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:54,487 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:54,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:54,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:54,647 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:54,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:54,827 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:55,001 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:55,003 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:55,160 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:55,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:55,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:55,330 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:55,523 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:55,525 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:55,702 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:55,703 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:55,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:55,885 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:56,086 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:56,088 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:56,278 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:56,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:56,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,487 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:56,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,703 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:19:56,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,926 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:57,143 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:57,145 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:57,359 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:57,361 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:57,576 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:57,577 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:57,798 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:57,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:19:58,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:58,051 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:19:58,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:58,311 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:58,543 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:58,545 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:58,773 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:58,775 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:59,002 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:59,004 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:19:59,223 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:59,224 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:19:59,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:59,445 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:19:59,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:59,668 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:19:59,918 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:19:59,919 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:00,164 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:00,165 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:00,402 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:00,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:00,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:00,656 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:00,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:00,920 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:01,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:01,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:01,174 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:20:01,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377758781] [2021-05-01 07:20:01,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1377758781] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:20:01,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:20:01,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2021-05-01 07:20:01,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451105602] [2021-05-01 07:20:01,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-01 07:20:01,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:20:01,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-01 07:20:01,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=6497, Unknown=0, NotChecked=0, Total=6806 [2021-05-01 07:20:01,176 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 81 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:20:01,353 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:20:29,005 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2021-05-01 07:20:29,705 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2021-05-01 07:20:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:20:30,949 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2021-05-01 07:20:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-01 07:20:30,954 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 91 [2021-05-01 07:20:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:20:30,955 INFO L225 Difference]: With dead ends: 110 [2021-05-01 07:20:30,955 INFO L226 Difference]: Without dead ends: 96 [2021-05-01 07:20:30,956 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3961 ImplicationChecksByTransitivity, 25845.2ms TimeCoverageRelationStatistics Valid=868, Invalid=25538, Unknown=0, NotChecked=0, Total=26406 [2021-05-01 07:20:30,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-01 07:20:30,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-05-01 07:20:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:20:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2021-05-01 07:20:30,965 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2021-05-01 07:20:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:20:30,965 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2021-05-01 07:20:30,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 80 states have (on average 1.0625) internal successors, (85), 79 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:20:30,965 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2021-05-01 07:20:30,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-05-01 07:20:30,966 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:20:30,966 INFO L519 BasicCegarLoop]: trace histogram [72, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:20:30,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-05-01 07:20:30,966 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:20:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:20:30,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1060220596, now seen corresponding path program 72 times [2021-05-01 07:20:30,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:20:30,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60914271] [2021-05-01 07:20:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:20:30,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:30,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:20:30,975 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2779 v_main_~n~0_80) InVars {main_~i~0=v_main_~i~0_2779, main_~n~0=v_main_~n~0_80} OutVars{main_~i~0=v_main_~i~0_2779, main_~n~0=v_main_~n~0_80} AuxVars[] AssignedVars[] [2021-05-01 07:20:30,978 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:20:30,984 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:30,990 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:30,996 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,001 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,008 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,014 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,016 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,025 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:20:31,032 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,033 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:20:31,039 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:20:31,047 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,054 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,061 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,068 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,070 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:20:31,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:20:31,123 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:20:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:31,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:31,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:20:31,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:20:31,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:20:31,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:20:31,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:20:31,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:20:31,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:20:31,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:20:31,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:31,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:20:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:31,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:20:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:31,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:31,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:20:31,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:20:31,549 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2021-05-01 07:20:31,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,633 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:20:31,723 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:31,725 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:31,781 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:31,782 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:31,846 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:31,848 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:20:31,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,914 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:31,995 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:31,997 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:32,058 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:32,059 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:20:32,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,120 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:20:32,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,204 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:32,303 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:32,305 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:32,393 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:32,395 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:32,486 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:32,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:32,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,563 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:32,668 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:32,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:32,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,761 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:32,864 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:32,866 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:20:32,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,955 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:33,072 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:33,074 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:33,181 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:33,183 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:33,296 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:33,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:33,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:33,422 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:33,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:33,559 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:33,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:33,690 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:33,821 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:33,823 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:20:33,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:33,939 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:34,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,077 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:20:34,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,219 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:34,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,373 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:34,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,512 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:34,648 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:34,650 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:34,788 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:34,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:34,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,944 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:20:35,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:35,125 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:20:35,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:35,297 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:35,480 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:35,482 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:35,654 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:35,655 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:35,826 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:35,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:35,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:35,970 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:20:36,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:36,157 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:36,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:36,340 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:36,556 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:36,558 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:36,732 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:36,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:36,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:36,922 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:37,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:37,131 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:37,326 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:37,328 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:37,523 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:37,525 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:20:37,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:37,727 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:37,940 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:37,941 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:20:38,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:38,141 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:20:38,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:38,362 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:38,588 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:38,590 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:20:38,805 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:38,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:39,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:39,005 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:20:39,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:39,232 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:20:39,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:39,453 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:39,676 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:39,678 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:39,893 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:39,895 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:20:40,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:40,118 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:40,364 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:40,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:40,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:40,609 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:40,852 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:40,854 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:41,089 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:41,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:41,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:41,340 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:20:41,603 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:41,605 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:41,855 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:41,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:42,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:42,080 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:42,350 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:42,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:20:42,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:42,597 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:42,884 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:42,886 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:20:43,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:43,134 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:20:43,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:43,413 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:20:43,695 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:20:43,697 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:43,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:43,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:43,935 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:20:43,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60914271] [2021-05-01 07:20:43,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [60914271] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:20:43,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:20:43,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [82] imperfect sequences [] total 82 [2021-05-01 07:20:43,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506436281] [2021-05-01 07:20:43,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-01 07:20:43,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:20:43,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-01 07:20:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=6659, Unknown=0, NotChecked=0, Total=6972 [2021-05-01 07:20:43,937 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:21:14,090 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-05-01 07:21:14,935 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-05-01 07:21:15,604 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-05-01 07:21:16,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:16,279 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2021-05-01 07:21:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-01 07:21:16,285 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 92 [2021-05-01 07:21:16,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:16,286 INFO L225 Difference]: With dead ends: 111 [2021-05-01 07:21:16,286 INFO L226 Difference]: Without dead ends: 97 [2021-05-01 07:21:16,287 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4052 ImplicationChecksByTransitivity, 27951.7ms TimeCoverageRelationStatistics Valid=879, Invalid=26181, Unknown=0, NotChecked=0, Total=27060 [2021-05-01 07:21:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-01 07:21:16,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-05-01 07:21:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:21:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-05-01 07:21:16,296 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2021-05-01 07:21:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:16,296 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-05-01 07:21:16,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 80 states have internal predecessors, (86), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:21:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-05-01 07:21:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-01 07:21:16,297 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:16,297 INFO L519 BasicCegarLoop]: trace histogram [73, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:16,297 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-05-01 07:21:16,297 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:16,297 INFO L82 PathProgramCache]: Analyzing trace with hash 119499652, now seen corresponding path program 73 times [2021-05-01 07:21:16,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:16,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044573798] [2021-05-01 07:21:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:16,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:21:16,312 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2854 v_main_~n~0_81) InVars {main_~i~0=v_main_~i~0_2854, main_~n~0=v_main_~n~0_81} OutVars{main_~i~0=v_main_~i~0_2854, main_~n~0=v_main_~n~0_81} AuxVars[] AssignedVars[] [2021-05-01 07:21:16,316 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:21:16,324 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,331 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,338 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,345 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,352 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,360 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,362 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,374 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:16,382 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,384 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:21:16,392 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,399 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:16,408 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,415 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,422 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,424 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:21:16,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:21:16,518 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:16,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:16,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:21:16,561 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:21:16,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:16,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:21:16,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:21:16,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:21:16,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:21:16,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:16,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:16,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:16,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:16,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:21:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:16,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:21:16,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:16,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:21:17,055 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2021-05-01 07:21:17,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:17,161 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:21:17,289 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:17,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:17,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:17,344 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:17,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:17,412 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:17,486 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:17,488 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:21:17,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:17,554 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:17,644 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:17,646 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:21:17,723 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:17,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:17,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:17,795 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:17,892 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:17,893 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:21:17,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:17,966 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:18,079 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:18,080 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:21:18,179 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:18,181 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:21:18,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:18,286 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:18,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:18,383 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:18,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:18,482 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:18,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:18,601 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:18,734 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:18,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:18,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:18,838 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:21:18,970 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:18,972 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:21:19,093 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:19,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:19,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:19,223 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:19,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:19,359 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:19,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:19,498 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:19,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:19,663 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:19,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:19,838 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:19,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:19,976 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:20,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:20,155 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:20,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:20,334 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:20,499 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:20,501 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:21:20,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:20,659 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:20,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:20,862 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:21,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:21,036 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:21,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:21,229 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:21,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:21,431 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:21,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:21,592 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:21,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:21,787 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:21,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:21,996 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:22,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:22,202 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:22,402 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:22,404 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:22,599 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:22,601 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:21:22,787 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:22,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:22,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:22,996 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:21:23,182 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:23,184 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:21:23,385 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:23,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:23,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:23,583 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:23,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:23,788 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:24,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:24,026 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:24,233 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:24,235 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:21:24,457 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:24,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:24,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:24,663 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:24,926 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:24,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:25,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:25,154 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:25,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:25,386 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:25,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:25,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:25,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:25,862 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:26,116 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:26,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:26,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:26,329 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:21:26,611 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:26,613 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:21:26,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:26,837 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:21:27,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:27,139 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:21:27,404 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:27,405 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:21:27,701 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:27,703 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:21:27,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:27,944 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:28,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,256 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:28,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,522 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:28,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:28,804 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:29,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,119 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:21:29,402 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:29,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:21:29,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:29,711 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:21:30,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:30,010 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:21:30,361 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:30,363 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:30,641 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:21:30,642 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:30,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:30,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:30,938 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:21:30,939 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044573798] [2021-05-01 07:21:30,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1044573798] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:21:30,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:21:30,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2021-05-01 07:21:30,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810295636] [2021-05-01 07:21:30,939 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-01 07:21:30,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:21:30,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-01 07:21:30,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=6894, Unknown=0, NotChecked=0, Total=7140 [2021-05-01 07:21:30,940 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:21:31,115 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:22:01,769 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2021-05-01 07:22:02,838 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2021-05-01 07:22:03,794 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-05-01 07:22:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:04,518 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2021-05-01 07:22:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-01 07:22:04,524 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 93 [2021-05-01 07:22:04,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:04,525 INFO L225 Difference]: With dead ends: 112 [2021-05-01 07:22:04,525 INFO L226 Difference]: Without dead ends: 98 [2021-05-01 07:22:04,527 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4301 ImplicationChecksByTransitivity, 30424.3ms TimeCoverageRelationStatistics Valid=746, Invalid=26976, Unknown=0, NotChecked=0, Total=27722 [2021-05-01 07:22:04,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-01 07:22:04,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-05-01 07:22:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:22:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2021-05-01 07:22:04,536 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 93 [2021-05-01 07:22:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:04,536 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2021-05-01 07:22:04,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 82 states have (on average 1.0609756097560976) internal successors, (87), 81 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:22:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2021-05-01 07:22:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-01 07:22:04,536 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:04,536 INFO L519 BasicCegarLoop]: trace histogram [74, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:04,536 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-05-01 07:22:04,537 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:04,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:04,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1963878324, now seen corresponding path program 74 times [2021-05-01 07:22:04,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:04,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125002489] [2021-05-01 07:22:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:04,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:22:04,552 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_2930 v_main_~n~0_82) InVars {main_~i~0=v_main_~i~0_2930, main_~n~0=v_main_~n~0_82} OutVars{main_~i~0=v_main_~i~0_2930, main_~n~0=v_main_~n~0_82} AuxVars[] AssignedVars[] [2021-05-01 07:22:04,555 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:22:04,558 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,567 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,577 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:04,579 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:22:04,587 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:04,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,602 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,609 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,619 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,626 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,633 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,640 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,646 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,654 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,660 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,662 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:22:04,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-05-01 07:22:04,744 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:04,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:04,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:04,777 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:22:04,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:04,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:04,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:22:04,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:22:04,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:22:04,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:04,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:04,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:05,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:05,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:05,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:22:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:05,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:05,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:22:05,204 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2021-05-01 07:22:05,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,314 INFO L147 QuantifierPusher]: treesize reduction 8, result has 79.5 percent of original size 31 [2021-05-01 07:22:05,422 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:05,424 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:05,487 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:05,489 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:05,565 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:05,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:05,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,653 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:05,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,756 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:05,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:05,843 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:05,930 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:05,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:06,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,008 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:06,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,122 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:06,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,241 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:06,353 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:06,355 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:06,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,440 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:06,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,558 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:06,686 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:06,689 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:06,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,803 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:06,916 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:06,918 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:07,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,029 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:07,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,163 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:07,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,303 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:07,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,423 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:07,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,551 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:07,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,688 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:07,807 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:07,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:07,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:07,914 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:08,054 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:08,055 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:08,175 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:08,176 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:08,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:08,289 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:08,449 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:08,451 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:08,593 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:08,594 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:08,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:08,708 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:08,863 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:08,864 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:09,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,005 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:09,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,143 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:09,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,311 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:09,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:09,480 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:09,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:09,654 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:09,842 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:09,844 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:10,020 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:10,022 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:10,197 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:10,199 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:10,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:10,377 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:10,569 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:10,571 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:10,771 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:10,773 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:10,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:10,970 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:11,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,193 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:11,443 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:11,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:11,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:11,648 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:11,910 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:11,913 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:12,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,116 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:12,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,397 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:12,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:12,640 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:12,919 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:12,921 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:13,150 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:13,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:13,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:13,403 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:13,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:13,657 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:13,922 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:13,924 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:14,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,143 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:14,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,400 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:14,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,635 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:14,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:14,884 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:15,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,115 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:15,432 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:15,434 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:15,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,651 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:15,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:15,926 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:16,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:16,182 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:16,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:16,446 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:16,722 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:16,724 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:16,953 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:16,956 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:17,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:17,225 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:17,490 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:17,492 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:17,754 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:17,756 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:18,010 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:18,011 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:18,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,263 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:18,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,563 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:18,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:18,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:18,842 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:18,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125002489] [2021-05-01 07:22:18,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1125002489] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:18,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:18,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [] total 84 [2021-05-01 07:22:18,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036368710] [2021-05-01 07:22:18,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-01 07:22:18,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-01 07:22:18,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=7061, Unknown=0, NotChecked=0, Total=7310 [2021-05-01 07:22:18,844 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:22:19,179 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-05-01 07:22:48,166 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:22:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:49,562 INFO L93 Difference]: Finished difference Result 113 states and 116 transitions. [2021-05-01 07:22:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-01 07:22:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2021-05-01 07:22:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:49,567 INFO L225 Difference]: With dead ends: 113 [2021-05-01 07:22:49,567 INFO L226 Difference]: Without dead ends: 99 [2021-05-01 07:22:49,569 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4396 ImplicationChecksByTransitivity, 28231.4ms TimeCoverageRelationStatistics Valid=755, Invalid=27637, Unknown=0, NotChecked=0, Total=28392 [2021-05-01 07:22:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-01 07:22:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2021-05-01 07:22:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:22:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2021-05-01 07:22:49,577 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 94 [2021-05-01 07:22:49,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:49,577 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2021-05-01 07:22:49,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 82 states have internal predecessors, (88), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:22:49,577 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2021-05-01 07:22:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-01 07:22:49,578 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:49,578 INFO L519 BasicCegarLoop]: trace histogram [75, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:49,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-05-01 07:22:49,578 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:49,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:49,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2124086140, now seen corresponding path program 75 times [2021-05-01 07:22:49,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:49,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155647720] [2021-05-01 07:22:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:49,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:22:49,591 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_3007 v_main_~n~0_83) InVars {main_~i~0=v_main_~i~0_3007, main_~n~0=v_main_~n~0_83} OutVars{main_~i~0=v_main_~i~0_3007, main_~n~0=v_main_~n~0_83} AuxVars[] AssignedVars[] [2021-05-01 07:22:49,593 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:22:49,594 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,601 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:49,606 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,607 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:22:49,612 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:49,616 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,621 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,626 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,633 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,638 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,643 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,648 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,652 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,656 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,661 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,662 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:22:49,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:22:49,708 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:49,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:49,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:49,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:49,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:49,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:22:49,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:22:49,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:22:49,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:49,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:49,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:49,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:49,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:22:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:49,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:22:49,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:22:50,135 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:22:50,136 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:50,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:50,176 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:50,232 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,233 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:50,274 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,275 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:50,311 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,313 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:50,351 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:50,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:50,393 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:50,448 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,450 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:50,505 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,507 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:50,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:50,565 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:50,634 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:50,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:50,699 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:50,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:50,776 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:50,853 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,854 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:50,915 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,916 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:50,975 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:50,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:51,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:51,036 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:51,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:51,108 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:51,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:51,178 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:51,261 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:51,262 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:51,333 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:51,334 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:51,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:51,409 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:51,513 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:51,514 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:51,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:51,606 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:51,709 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:51,711 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:51,803 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:51,805 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:51,885 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:51,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:51,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:51,967 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:52,064 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:52,065 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:52,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,154 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:52,266 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:52,268 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:52,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,359 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:52,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,479 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:52,609 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:52,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:52,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,708 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:52,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,825 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:52,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,931 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:53,033 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:53,035 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:53,134 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:53,135 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:53,230 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:53,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:53,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,343 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:53,482 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:53,483 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:53,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,597 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:53,721 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:53,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:53,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,830 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:53,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,951 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:54,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:54,074 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:54,201 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:54,202 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:54,311 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:54,312 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:54,449 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:54,451 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:54,594 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:54,595 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:54,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:54,732 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:54,881 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:54,882 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:55,021 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:55,022 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:55,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:55,161 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:55,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:55,298 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:55,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:55,435 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:55,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:55,594 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:55,744 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:55,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:55,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:55,882 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:56,037 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:56,038 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:56,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:56,181 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:56,335 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:56,336 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:56,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:56,478 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:22:56,639 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:56,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:22:56,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:56,808 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:22:56,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:56,977 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:57,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:57,141 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:22:57,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:57,307 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:57,479 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:57,480 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:57,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:57,646 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:57,817 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:57,818 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:22:57,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:57,998 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:22:58,166 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:58,167 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:58,323 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:22:58,324 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:22:58,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:58,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:58,489 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:58,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155647720] [2021-05-01 07:22:58,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1155647720] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:58,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:58,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2021-05-01 07:22:58,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029179974] [2021-05-01 07:22:58,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-01 07:22:58,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:58,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-01 07:22:58,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=7157, Unknown=0, NotChecked=0, Total=7482 [2021-05-01 07:22:58,491 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:23:19,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:23:19,698 INFO L93 Difference]: Finished difference Result 114 states and 117 transitions. [2021-05-01 07:23:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-01 07:23:19,701 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 95 [2021-05-01 07:23:19,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:23:19,702 INFO L225 Difference]: With dead ends: 114 [2021-05-01 07:23:19,702 INFO L226 Difference]: Without dead ends: 100 [2021-05-01 07:23:19,703 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4331 ImplicationChecksByTransitivity, 18612.7ms TimeCoverageRelationStatistics Valid=912, Invalid=28158, Unknown=0, NotChecked=0, Total=29070 [2021-05-01 07:23:19,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-01 07:23:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2021-05-01 07:23:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 91 states have (on average 1.021978021978022) internal successors, (93), 92 states have internal predecessors, (93), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:23:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2021-05-01 07:23:19,712 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 95 [2021-05-01 07:23:19,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:23:19,712 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2021-05-01 07:23:19,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 83 states have internal predecessors, (89), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 07:23:19,712 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2021-05-01 07:23:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-05-01 07:23:19,712 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:23:19,712 INFO L519 BasicCegarLoop]: trace histogram [76, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:23:19,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-05-01 07:23:19,713 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:23:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:23:19,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1499406156, now seen corresponding path program 76 times [2021-05-01 07:23:19,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:23:19,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694365947] [2021-05-01 07:23:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:23:19,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:23:19,721 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_3085 v_main_~n~0_84) InVars {main_~i~0=v_main_~i~0_3085, main_~n~0=v_main_~n~0_84} OutVars{main_~i~0=v_main_~i~0_3085, main_~n~0=v_main_~n~0_84} AuxVars[] AssignedVars[] [2021-05-01 07:23:19,723 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size [2021-05-01 07:23:19,725 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,730 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,737 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:23:19,738 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:23:19,743 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:23:19,748 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,753 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,758 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,767 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,772 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,777 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,782 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,788 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,793 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,798 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,800 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.2 percent of original size 58 [2021-05-01 07:23:19,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-05-01 07:23:19,855 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:23:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:19,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:19,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:23:19,895 INFO L142 QuantifierPusher]: treesize reduction 6, result has 62.5 percent of original size [2021-05-01 07:23:19,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:19,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:23:19,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:23:19,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:19,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:23:20,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:23:20,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:20,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:23:20,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:20,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:23:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:20,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-05-01 07:23:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:23:20,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:23:20,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:23:20,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:23:20,285 INFO L142 QuantifierPusher]: treesize reduction 17, result has 55.3 percent of original size [2021-05-01 07:23:20,286 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:20,322 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,323 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:20,362 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,363 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:20,404 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,406 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:20,450 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,452 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:20,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,501 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:20,561 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,562 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:20,612 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,613 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:20,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:20,665 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:23:20,731 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,733 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:20,785 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,786 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:20,840 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,842 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:20,895 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,896 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:20,956 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:20,958 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:21,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,018 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:21,096 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:21,098 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:21,161 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:21,162 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:21,229 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:21,230 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:21,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:21,311 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:21,379 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:21,381 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:21,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,453 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:23:21,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,536 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:23:21,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,636 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:23:21,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:21,730 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:21,824 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:21,825 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:21,907 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:21,908 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:21,992 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:21,993 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:22,082 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:22,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:22,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,174 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:23:22,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,288 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:23:22,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,409 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:23:22,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,530 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:23:22,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,654 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:22,782 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:22,783 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:22,884 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:22,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:22,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:22,994 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:23:23,113 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:23,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:23,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:23,223 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:23:23,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:23,354 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:23,477 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:23,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:23,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:23,594 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:23,723 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:23,724 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:23,837 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:23,839 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:23,958 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:23,960 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:24,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:24,085 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:23:24,224 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:24,226 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:24,355 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:24,356 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:24,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:24,488 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:23:24,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:24,631 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:23:24,784 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:24,785 INFO L147 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size 12 [2021-05-01 07:23:24,916 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:24,917 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:25,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:25,058 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:23:25,222 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:25,224 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:25,372 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:25,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:25,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:25,515 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:25,677 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:25,678 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:25,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:25,830 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:26,002 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:26,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:26,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:26,160 INFO L147 QuantifierPusher]: treesize reduction 4, result has 78.9 percent of original size 15 [2021-05-01 07:23:26,334 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:26,335 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:26,489 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:26,491 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:26,652 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:26,653 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:23:26,813 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:26,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:23:26,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:26,984 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-05-01 07:23:27,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:27,165 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:23:27,356 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:27,357 INFO L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-05-01 07:23:27,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:23:27,535 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:23:27,728 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-05-01 07:23:27,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10