/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/half_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:09:10,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:09:10,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:09:10,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:09:10,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:09:10,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:09:10,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:09:10,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:09:10,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:09:10,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:09:10,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:09:10,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:09:10,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:09:10,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:09:10,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:09:10,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:09:10,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:09:10,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:09:10,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:09:10,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:09:10,568 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 07:09:10,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:09:10,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:09:10,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:09:10,582 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:09:10,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:09:10,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:09:10,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:09:10,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:09:10,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:09:10,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:09:10,583 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:09:10,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:09:10,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:09:10,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:09:10,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:09:10,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:09:10,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:09:10,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:09:10,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:09:10,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:09:10,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:09:10,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:09:10,585 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:09:10,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:09:10,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:09:10,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:09:10,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:09:10,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:09:10,971 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:09:10,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/half_2.i [2021-05-01 07:09:11,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b2bf38b/51bf451691e24652bd970b0eeab6ac2f/FLAG8a3388ea0 [2021-05-01 07:09:11,427 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:09:11,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/half_2.i [2021-05-01 07:09:11,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b2bf38b/51bf451691e24652bd970b0eeab6ac2f/FLAG8a3388ea0 [2021-05-01 07:09:11,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80b2bf38b/51bf451691e24652bd970b0eeab6ac2f [2021-05-01 07:09:11,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:09:11,456 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:09:11,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:09:11,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:09:11,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:09:11,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75cdaf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11, skipping insertion in model container [2021-05-01 07:09:11,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:09:11,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:09:11,611 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/half_2.i[893,906] [2021-05-01 07:09:11,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:09:11,631 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:09:11,641 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/half_2.i[893,906] [2021-05-01 07:09:11,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:09:11,701 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:09:11,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11 WrapperNode [2021-05-01 07:09:11,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:09:11,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:09:11,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:09:11,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:09:11,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (1/1) ... [2021-05-01 07:09:11,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:09:11,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:09:11,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:09:11,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:09:11,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (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 07:09:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:09:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:09:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:09:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:09:11,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:09:11,854 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:09:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:09:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:09:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-01 07:09:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-01 07:09:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:09:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:09:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:09:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:09:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:09:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:09:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:09:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:09:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:09:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:09:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:09:11,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:09:12,047 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:09:12,047 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-01 07:09:12,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:09:12 BoogieIcfgContainer [2021-05-01 07:09:12,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:09:12,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:09:12,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:09:12,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:09:12,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:09:11" (1/3) ... [2021-05-01 07:09:12,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fba3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:09:12, skipping insertion in model container [2021-05-01 07:09:12,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:09:11" (2/3) ... [2021-05-01 07:09:12,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36fba3ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:09:12, skipping insertion in model container [2021-05-01 07:09:12,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:09:12" (3/3) ... [2021-05-01 07:09:12,054 INFO L111 eAbstractionObserver]: Analyzing ICFG half_2.i [2021-05-01 07:09:12,058 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:09:12,060 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:09:12,072 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:09:12,086 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:09:12,086 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:09:12,086 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:09:12,086 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:09:12,086 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:09:12,086 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:09:12,086 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:09:12,087 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:09:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 07:09:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 07:09:12,101 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:12,102 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:12,102 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:12,106 INFO L82 PathProgramCache]: Analyzing trace with hash 21938802, now seen corresponding path program 1 times [2021-05-01 07:09:12,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:12,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684424252] [2021-05-01 07:09:12,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:12,153 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:09:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:12,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:12,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:12,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:12,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:12,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:12,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:12,307 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 07:09:12,309 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:12,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684424252] [2021-05-01 07:09:12,310 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1684424252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:12,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:12,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-01 07:09:12,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587119455] [2021-05-01 07:09:12,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-01 07:09:12,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:12,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-01 07:09:12,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-05-01 07:09:12,325 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 1.6666666666666667) internal successors, (10), 5 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 07:09:12,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:12,469 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2021-05-01 07:09:12,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 07:09:12,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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 07:09:12,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:12,476 INFO L225 Difference]: With dead ends: 44 [2021-05-01 07:09:12,476 INFO L226 Difference]: Without dead ends: 19 [2021-05-01 07:09:12,479 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 102.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-05-01 07:09:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-01 07:09:12,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-01 07:09:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 07:09:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-05-01 07:09:12,519 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-05-01 07:09:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:12,519 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-05-01 07:09:12,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 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 07:09:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-05-01 07:09:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-01 07:09:12,521 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:12,521 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:12,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:09:12,522 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:12,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1438800602, now seen corresponding path program 1 times [2021-05-01 07:09:12,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:12,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698375414] [2021-05-01 07:09:12,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:12,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:12,572 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_7 v_main_~n~0_10) InVars {main_~i~0=v_main_~i~0_7, main_~n~0=v_main_~n~0_10} OutVars{main_~i~0=v_main_~i~0_7, main_~n~0=v_main_~n~0_10} AuxVars[] AssignedVars[] [2021-05-01 07:09:12,595 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:12,601 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,615 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:12,619 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,621 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:12,627 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,634 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:12,637 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,641 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,646 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,651 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,653 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,656 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,660 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,663 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,665 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:12,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:12,691 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:12,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:12,801 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:12,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:12,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:12,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:12,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:12,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:12,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:12,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:12,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:12,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:12,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:12,894 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 07:09:12,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:12,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:12,956 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:13,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:13,002 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:13,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698375414] [2021-05-01 07:09:13,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [698375414] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:13,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:13,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 07:09:13,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960182322] [2021-05-01 07:09:13,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-01 07:09:13,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:13,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-01 07:09:13,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-05-01 07:09:13,004 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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 07:09:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:13,471 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-05-01 07:09:13,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-01 07:09:13,472 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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 15 [2021-05-01 07:09:13,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:13,473 INFO L225 Difference]: With dead ends: 35 [2021-05-01 07:09:13,474 INFO L226 Difference]: Without dead ends: 33 [2021-05-01 07:09:13,475 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 468.7ms TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:09:13,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-01 07:09:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2021-05-01 07:09:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 21 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 07:09:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-01 07:09:13,484 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 15 [2021-05-01 07:09:13,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:13,484 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-01 07:09:13,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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 07:09:13,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-01 07:09:13,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 07:09:13,485 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:13,485 INFO L519 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:13,485 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:09:13,485 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:13,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:13,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1206656678, now seen corresponding path program 2 times [2021-05-01 07:09:13,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:13,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852384688] [2021-05-01 07:09:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:13,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:13,492 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_11 v_main_~n~0_11) InVars {main_~i~0=v_main_~i~0_11, main_~n~0=v_main_~n~0_11} OutVars{main_~i~0=v_main_~i~0_11, main_~n~0=v_main_~n~0_11} AuxVars[] AssignedVars[] [2021-05-01 07:09:13,495 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:13,499 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,501 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,503 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,505 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,507 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,508 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,512 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:13,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,514 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:13,517 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:13,519 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,521 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,523 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,525 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,526 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:13,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:13,540 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:13,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:13,589 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:13,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:13,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:13,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:13,618 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:13,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:13,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:13,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:13,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:13,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:13,656 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 07:09:13,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:13,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,709 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:13,732 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:13,734 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:13,748 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:13,749 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:13,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:13,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:13,764 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:13,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852384688] [2021-05-01 07:09:13,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [852384688] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:13,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:13,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 07:09:13,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270133482] [2021-05-01 07:09:13,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-01 07:09:13,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:13,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-01 07:09:13,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-05-01 07:09:13,765 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 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 07:09:14,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:14,574 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-05-01 07:09:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-01 07:09:14,575 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 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 17 [2021-05-01 07:09:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:14,576 INFO L225 Difference]: With dead ends: 52 [2021-05-01 07:09:14,576 INFO L226 Difference]: Without dead ends: 50 [2021-05-01 07:09:14,577 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 765.1ms TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2021-05-01 07:09:14,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-01 07:09:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-05-01 07:09:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 07:09:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-05-01 07:09:14,585 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 17 [2021-05-01 07:09:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:14,586 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-05-01 07:09:14,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 10 states have internal predecessors, (13), 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 07:09:14,586 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-05-01 07:09:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-01 07:09:14,587 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:14,587 INFO L519 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:14,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 07:09:14,587 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:14,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:14,588 INFO L82 PathProgramCache]: Analyzing trace with hash 870463526, now seen corresponding path program 3 times [2021-05-01 07:09:14,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:14,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599921632] [2021-05-01 07:09:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:14,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:14,594 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_17 v_main_~n~0_12) InVars {main_~i~0=v_main_~i~0_17, main_~n~0=v_main_~n~0_12} OutVars{main_~i~0=v_main_~i~0_17, main_~n~0=v_main_~n~0_12} AuxVars[] AssignedVars[] [2021-05-01 07:09:14,597 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:14,600 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,602 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,604 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,606 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,608 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,609 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,613 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:14,615 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,615 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:14,618 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:14,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,622 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,624 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,626 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,627 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:14,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:14,640 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:14,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:14,668 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:09:14,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:14,673 INFO L142 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-05-01 07:09:14,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:14,682 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-05-01 07:09:14,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:14,694 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:14,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:14,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:14,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:14,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:14,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:14,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:14,729 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 07:09:14,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:14,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,778 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:14,802 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:14,803 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:14,817 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:14,818 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:14,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,835 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:14,855 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:14,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:14,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:14,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:14,873 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:14,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599921632] [2021-05-01 07:09:14,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [599921632] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:14,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:14,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:09:14,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949498372] [2021-05-01 07:09:14,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-01 07:09:14,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:14,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-01 07:09:14,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-05-01 07:09:14,874 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 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 07:09:16,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:16,109 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2021-05-01 07:09:16,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-01 07:09:16,109 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 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 19 [2021-05-01 07:09:16,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:16,112 INFO L225 Difference]: With dead ends: 68 [2021-05-01 07:09:16,112 INFO L226 Difference]: Without dead ends: 66 [2021-05-01 07:09:16,113 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 1126.6ms TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2021-05-01 07:09:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-01 07:09:16,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 43. [2021-05-01 07:09:16,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 32 states have (on average 1.25) internal successors, (40), 34 states have internal predecessors, (40), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-01 07:09:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2021-05-01 07:09:16,122 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 19 [2021-05-01 07:09:16,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:16,122 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2021-05-01 07:09:16,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 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 07:09:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2021-05-01 07:09:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:09:16,123 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:16,123 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:16,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 07:09:16,124 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:16,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:16,124 INFO L82 PathProgramCache]: Analyzing trace with hash 810760849, now seen corresponding path program 1 times [2021-05-01 07:09:16,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:16,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549972792] [2021-05-01 07:09:16,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:16,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:16,130 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_25 v_main_~n~0_13) InVars {main_~i~0=v_main_~i~0_25, main_~n~0=v_main_~n~0_13} OutVars{main_~i~0=v_main_~i~0_25, main_~n~0=v_main_~n~0_13} AuxVars[] AssignedVars[] [2021-05-01 07:09:16,132 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:16,135 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,137 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,139 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,142 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,143 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,147 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:16,149 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,150 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:16,152 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:16,154 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,156 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,158 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,160 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,161 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:16,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:16,175 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:16,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:16,204 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:16,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:16,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:16,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:16,234 INFO L142 QuantifierPusher]: treesize reduction 20, result has 88.3 percent of original size [2021-05-01 07:09:16,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-05-01 07:09:16,270 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.1 percent of original size [2021-05-01 07:09:16,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-05-01 07:09:16,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:16,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:16,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:16,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:16,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:09:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:16,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:16,369 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 07:09:16,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:16,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,419 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:16,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:16,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:16,446 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:16,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549972792] [2021-05-01 07:09:16,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [549972792] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:16,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:16,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 07:09:16,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597339044] [2021-05-01 07:09:16,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-01 07:09:16,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:16,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-01 07:09:16,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-05-01 07:09:16,448 INFO L87 Difference]: Start difference. First operand 43 states and 51 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 07:09:17,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:17,053 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2021-05-01 07:09:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-01 07:09:17,054 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 07:09:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:17,055 INFO L225 Difference]: With dead ends: 57 [2021-05-01 07:09:17,055 INFO L226 Difference]: Without dead ends: 36 [2021-05-01 07:09:17,055 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 649.3ms TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:09:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-05-01 07:09:17,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-05-01 07:09:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-05-01 07:09:17,061 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 22 [2021-05-01 07:09:17,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:17,061 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-05-01 07:09:17,061 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 07:09:17,061 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-05-01 07:09:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-01 07:09:17,061 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:17,062 INFO L519 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:17,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 07:09:17,062 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:17,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:17,062 INFO L82 PathProgramCache]: Analyzing trace with hash -88608346, now seen corresponding path program 4 times [2021-05-01 07:09:17,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:17,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879467474] [2021-05-01 07:09:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:17,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:17,067 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_29 v_main_~n~0_14) InVars {main_~i~0=v_main_~i~0_29, main_~n~0=v_main_~n~0_14} OutVars{main_~i~0=v_main_~i~0_29, main_~n~0=v_main_~n~0_14} AuxVars[] AssignedVars[] [2021-05-01 07:09:17,070 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:17,072 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,075 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,076 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,078 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,080 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,081 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,085 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:17,086 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,087 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:17,090 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,092 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,093 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,095 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:17,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,098 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:17,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:17,112 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:17,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:17,132 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:09:17,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:17,136 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:09:17,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:17,144 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:09:17,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:17,157 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:17,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:17,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:17,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:17,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:17,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:17,189 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 07:09:17,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:17,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,236 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:17,260 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:17,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:17,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,277 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:17,297 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:17,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:17,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,315 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:17,337 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:17,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:17,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,357 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:17,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:17,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:17,381 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:17,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879467474] [2021-05-01 07:09:17,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1879467474] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:17,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:17,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 07:09:17,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056422404] [2021-05-01 07:09:17,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-01 07:09:17,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:17,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-01 07:09:17,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:09:17,382 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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 07:09:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:18,596 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2021-05-01 07:09:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-01 07:09:18,596 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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 21 [2021-05-01 07:09:18,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:18,597 INFO L225 Difference]: With dead ends: 66 [2021-05-01 07:09:18,597 INFO L226 Difference]: Without dead ends: 64 [2021-05-01 07:09:18,598 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1159.0ms TimeCoverageRelationStatistics Valid=264, Invalid=1376, Unknown=0, NotChecked=0, Total=1640 [2021-05-01 07:09:18,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-01 07:09:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 38. [2021-05-01 07:09:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 30 states have internal predecessors, (37), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:18,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-05-01 07:09:18,604 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2021-05-01 07:09:18,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:18,604 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-05-01 07:09:18,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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 07:09:18,605 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-05-01 07:09:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 07:09:18,605 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:18,605 INFO L519 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:18,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 07:09:18,606 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1661291302, now seen corresponding path program 5 times [2021-05-01 07:09:18,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:18,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344397505] [2021-05-01 07:09:18,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:18,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:18,611 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_39 v_main_~n~0_15) InVars {main_~i~0=v_main_~i~0_39, main_~n~0=v_main_~n~0_15} OutVars{main_~i~0=v_main_~i~0_39, main_~n~0=v_main_~n~0_15} AuxVars[] AssignedVars[] [2021-05-01 07:09:18,613 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:18,614 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,618 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:18,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,620 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:18,623 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,625 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,627 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:18,629 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,631 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,633 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,635 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,636 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,657 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,659 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,659 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:18,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:18,673 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:18,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:18,690 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:18,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:18,695 INFO L142 QuantifierPusher]: treesize reduction 12, result has 63.6 percent of original size [2021-05-01 07:09:18,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:09:18,708 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-05-01 07:09:18,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:18,718 INFO L142 QuantifierPusher]: treesize reduction 12, result has 61.3 percent of original size [2021-05-01 07:09:18,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:09:18,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:18,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:18,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:18,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:18,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:18,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:18,764 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 07:09:18,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:18,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,813 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:18,838 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:18,839 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:18,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,856 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:18,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,878 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:18,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,901 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:18,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,924 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:18,948 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:18,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:18,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:18,970 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:18,997 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:18,998 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:19,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:19,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:19,021 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:19,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344397505] [2021-05-01 07:09:19,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1344397505] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:19,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:19,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:09:19,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024169463] [2021-05-01 07:09:19,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-01 07:09:19,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:19,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-01 07:09:19,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-05-01 07:09:19,022 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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 07:09:20,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:20,610 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-05-01 07:09:20,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-01 07:09:20,611 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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 23 [2021-05-01 07:09:20,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:20,612 INFO L225 Difference]: With dead ends: 76 [2021-05-01 07:09:20,612 INFO L226 Difference]: Without dead ends: 74 [2021-05-01 07:09:20,613 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1477.5ms TimeCoverageRelationStatistics Valid=379, Invalid=2071, Unknown=0, NotChecked=0, Total=2450 [2021-05-01 07:09:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-01 07:09:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 40. [2021-05-01 07:09:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:20,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-05-01 07:09:20,642 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 23 [2021-05-01 07:09:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:20,643 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-05-01 07:09:20,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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 07:09:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2021-05-01 07:09:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-01 07:09:20,643 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:20,644 INFO L519 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:20,644 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 07:09:20,644 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:20,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:20,644 INFO L82 PathProgramCache]: Analyzing trace with hash -312327002, now seen corresponding path program 6 times [2021-05-01 07:09:20,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:20,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526629536] [2021-05-01 07:09:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:20,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:20,650 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_51 v_main_~n~0_16) InVars {main_~i~0=v_main_~i~0_51, main_~n~0=v_main_~n~0_16} OutVars{main_~i~0=v_main_~i~0_51, main_~n~0=v_main_~n~0_16} AuxVars[] AssignedVars[] [2021-05-01 07:09:20,652 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:20,653 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,656 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,659 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:20,659 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:20,662 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:20,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,667 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,670 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,672 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,676 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,678 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,680 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,682 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,683 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:20,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:20,697 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:20,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:20,722 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:20,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:20,727 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:09:20,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:20,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:20,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:20,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:20,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:20,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:20,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:20,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:20,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:20,786 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 07:09:20,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:20,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,836 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:20,863 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:20,864 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:20,880 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:20,881 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:20,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:20,898 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:20,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,917 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:20,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:20,941 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:20,965 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:20,966 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:20,986 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:20,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:21,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:21,008 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:21,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:21,035 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:21,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:21,063 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:21,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:21,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:21,092 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:21,092 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526629536] [2021-05-01 07:09:21,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [526629536] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:21,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:21,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 07:09:21,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707933919] [2021-05-01 07:09:21,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-01 07:09:21,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:21,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-01 07:09:21,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:09:21,094 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 states have internal predecessors, (21), 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 07:09:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:23,069 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2021-05-01 07:09:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-01 07:09:23,070 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 states have internal predecessors, (21), 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 25 [2021-05-01 07:09:23,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:23,071 INFO L225 Difference]: With dead ends: 86 [2021-05-01 07:09:23,071 INFO L226 Difference]: Without dead ends: 84 [2021-05-01 07:09:23,072 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 740 ImplicationChecksByTransitivity, 1782.5ms TimeCoverageRelationStatistics Valid=461, Invalid=2845, Unknown=0, NotChecked=0, Total=3306 [2021-05-01 07:09:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-01 07:09:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 42. [2021-05-01 07:09:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 34 states have internal predecessors, (45), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2021-05-01 07:09:23,079 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 25 [2021-05-01 07:09:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:23,079 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2021-05-01 07:09:23,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 18 states have internal predecessors, (21), 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 07:09:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2021-05-01 07:09:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-01 07:09:23,080 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:23,080 INFO L519 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:23,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 07:09:23,080 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1416027686, now seen corresponding path program 7 times [2021-05-01 07:09:23,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:23,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669661412] [2021-05-01 07:09:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:23,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:23,085 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_65 v_main_~n~0_17) InVars {main_~i~0=v_main_~i~0_65, main_~n~0=v_main_~n~0_17} OutVars{main_~i~0=v_main_~i~0_65, main_~n~0=v_main_~n~0_17} AuxVars[] AssignedVars[] [2021-05-01 07:09:23,087 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:23,088 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,091 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:23,093 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,094 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:23,096 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:23,098 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,100 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,102 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,105 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,107 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,108 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,110 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,111 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,113 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,113 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:23,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:23,127 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:23,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:23,144 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:23,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:23,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:23,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:23,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:23,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:23,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:23,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:23,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:23,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:23,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:23,199 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 07:09:23,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:23,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,249 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:23,275 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,276 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:23,291 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,292 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:23,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,308 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:23,331 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,332 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:23,350 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:23,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,371 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:23,396 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,397 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:23,419 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,420 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:23,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,442 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:23,471 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,472 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:23,496 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,497 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:23,520 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:23,521 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:23,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:23,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:23,545 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:23,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669661412] [2021-05-01 07:09:23,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [669661412] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:23,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:23,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-05-01 07:09:23,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403883615] [2021-05-01 07:09:23,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-01 07:09:23,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-01 07:09:23,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2021-05-01 07:09:23,547 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 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 07:09:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:26,019 INFO L93 Difference]: Finished difference Result 96 states and 121 transitions. [2021-05-01 07:09:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-01 07:09:26,019 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 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 27 [2021-05-01 07:09:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:26,020 INFO L225 Difference]: With dead ends: 96 [2021-05-01 07:09:26,020 INFO L226 Difference]: Without dead ends: 94 [2021-05-01 07:09:26,022 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 2175.1ms TimeCoverageRelationStatistics Valid=543, Invalid=3747, Unknown=0, NotChecked=0, Total=4290 [2021-05-01 07:09:26,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-01 07:09:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 44. [2021-05-01 07:09:26,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.4) internal successors, (49), 36 states have internal predecessors, (49), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2021-05-01 07:09:26,031 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 27 [2021-05-01 07:09:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:26,031 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2021-05-01 07:09:26,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 20 states have internal predecessors, (23), 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 07:09:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2021-05-01 07:09:26,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-01 07:09:26,032 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:26,032 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:26,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-01 07:09:26,032 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:26,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:26,032 INFO L82 PathProgramCache]: Analyzing trace with hash -889872314, now seen corresponding path program 2 times [2021-05-01 07:09:26,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:26,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854680092] [2021-05-01 07:09:26,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:26,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:26,037 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_81 v_main_~n~0_18) InVars {main_~i~0=v_main_~i~0_81, main_~n~0=v_main_~n~0_18} OutVars{main_~i~0=v_main_~i~0_81, main_~n~0=v_main_~n~0_18} AuxVars[] AssignedVars[] [2021-05-01 07:09:26,039 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:26,039 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,043 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,045 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:26,045 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:26,050 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,051 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,054 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,055 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:26,058 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,060 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,061 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,063 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,065 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,066 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,067 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:26,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:26,080 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:26,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:26,103 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:09:26,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:26,107 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:09:26,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:26,116 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:09:26,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:26,132 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:09:26,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:09:26,178 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:09:26,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:09:26,231 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:09:26,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:09:26,282 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:26,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:26,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:26,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:26,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:26,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:26,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:09:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:26,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:09:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:26,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:09:26,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:26,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,387 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:26,412 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:26,413 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:26,427 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:26,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:26,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:26,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:26,443 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:26,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854680092] [2021-05-01 07:09:26,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [854680092] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:26,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:26,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-05-01 07:09:26,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796206441] [2021-05-01 07:09:26,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:09:26,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:26,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:09:26,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-05-01 07:09:26,445 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:26,785 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2021-05-01 07:09:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:27,058 INFO L93 Difference]: Finished difference Result 68 states and 84 transitions. [2021-05-01 07:09:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:09:27,058 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2021-05-01 07:09:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:27,059 INFO L225 Difference]: With dead ends: 68 [2021-05-01 07:09:27,059 INFO L226 Difference]: Without dead ends: 44 [2021-05-01 07:09:27,060 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 736.5ms TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2021-05-01 07:09:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-01 07:09:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-05-01 07:09:27,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:27,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2021-05-01 07:09:27,066 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 31 [2021-05-01 07:09:27,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:27,066 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2021-05-01 07:09:27,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:27,066 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2021-05-01 07:09:27,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-01 07:09:27,067 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:27,067 INFO L519 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:27,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-01 07:09:27,067 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:27,067 INFO L82 PathProgramCache]: Analyzing trace with hash 212539302, now seen corresponding path program 8 times [2021-05-01 07:09:27,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:27,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [802980393] [2021-05-01 07:09:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:27,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:27,073 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_87 v_main_~n~0_19) InVars {main_~i~0=v_main_~i~0_87, main_~n~0=v_main_~n~0_19} OutVars{main_~i~0=v_main_~i~0_87, main_~n~0=v_main_~n~0_19} AuxVars[] AssignedVars[] [2021-05-01 07:09:27,075 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:27,075 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,079 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:27,081 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,081 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:27,083 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:27,086 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,088 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,090 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,093 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,095 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,099 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,100 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,102 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,103 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:27,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:27,118 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:27,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:27,157 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:09:27,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:27,161 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:09:27,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:27,170 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:09:27,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:27,182 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:27,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:27,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:27,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:27,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:27,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:27,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:27,216 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 07:09:27,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:27,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,263 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:27,288 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:27,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:27,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,305 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:27,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,325 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:27,345 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:27,346 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:27,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,363 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:27,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,385 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:27,407 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:27,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:27,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,426 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:27,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,450 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:27,474 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:27,474 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:27,495 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:27,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:27,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,526 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:27,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,554 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:27,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,582 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:27,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:27,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:27,611 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:27,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [802980393] [2021-05-01 07:09:27,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [802980393] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:27,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:27,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-05-01 07:09:27,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957639408] [2021-05-01 07:09:27,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-01 07:09:27,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:27,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-01 07:09:27,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:09:27,612 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 22 states have internal predecessors, (25), 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 07:09:30,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:30,122 INFO L93 Difference]: Finished difference Result 98 states and 123 transitions. [2021-05-01 07:09:30,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-01 07:09:30,122 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 22 states have internal predecessors, (25), 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 29 [2021-05-01 07:09:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:30,123 INFO L225 Difference]: With dead ends: 98 [2021-05-01 07:09:30,123 INFO L226 Difference]: Without dead ends: 96 [2021-05-01 07:09:30,125 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2229.8ms TimeCoverageRelationStatistics Valid=510, Invalid=4182, Unknown=0, NotChecked=0, Total=4692 [2021-05-01 07:09:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-01 07:09:30,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 46. [2021-05-01 07:09:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 38 states have internal predecessors, (51), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2021-05-01 07:09:30,133 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 29 [2021-05-01 07:09:30,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:30,133 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2021-05-01 07:09:30,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 22 states have internal predecessors, (25), 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 07:09:30,133 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2021-05-01 07:09:30,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 07:09:30,134 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:30,134 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:30,134 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-01 07:09:30,134 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:30,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:30,134 INFO L82 PathProgramCache]: Analyzing trace with hash -343860794, now seen corresponding path program 3 times [2021-05-01 07:09:30,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:30,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100380642] [2021-05-01 07:09:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:30,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:30,139 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_105 v_main_~n~0_20) InVars {main_~i~0=v_main_~i~0_105, main_~n~0=v_main_~n~0_20} OutVars{main_~i~0=v_main_~i~0_105, main_~n~0=v_main_~n~0_20} AuxVars[] AssignedVars[] [2021-05-01 07:09:30,140 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:30,142 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,145 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,146 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,148 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,150 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,151 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,153 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,156 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:30,156 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:30,158 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:30,162 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,164 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,166 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,168 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,168 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:30,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:30,183 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:30,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:30,201 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:30,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:30,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:30,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:30,218 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:09:30,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:09:30,261 INFO L142 QuantifierPusher]: treesize reduction 15, result has 89.5 percent of original size [2021-05-01 07:09:30,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-05-01 07:09:30,318 INFO L142 QuantifierPusher]: treesize reduction 15, result has 89.4 percent of original size [2021-05-01 07:09:30,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-05-01 07:09:30,372 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:30,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:30,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:30,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:30,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:30,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:30,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:09:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:30,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:30,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:09:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:30,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:09:30,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:30,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,471 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:30,497 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:30,498 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:30,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,513 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:30,534 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:30,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:30,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,552 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:30,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:30,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:30,574 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:30,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100380642] [2021-05-01 07:09:30,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1100380642] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:30,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:30,575 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-05-01 07:09:30,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830113269] [2021-05-01 07:09:30,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 07:09:30,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:30,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 07:09:30,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-05-01 07:09:30,575 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:31,231 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2021-05-01 07:09:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 07:09:31,232 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2021-05-01 07:09:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:31,233 INFO L225 Difference]: With dead ends: 70 [2021-05-01 07:09:31,233 INFO L226 Difference]: Without dead ends: 46 [2021-05-01 07:09:31,233 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 812.5ms TimeCoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:09:31,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-01 07:09:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-01 07:09:31,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-05-01 07:09:31,239 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 33 [2021-05-01 07:09:31,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:31,239 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-05-01 07:09:31,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:31,239 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2021-05-01 07:09:31,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-01 07:09:31,240 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:31,240 INFO L519 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:31,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-01 07:09:31,240 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:31,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:31,240 INFO L82 PathProgramCache]: Analyzing trace with hash -993595098, now seen corresponding path program 9 times [2021-05-01 07:09:31,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:31,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724240814] [2021-05-01 07:09:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:31,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:31,246 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_113 v_main_~n~0_21) InVars {main_~i~0=v_main_~i~0_113, main_~n~0=v_main_~n~0_21} OutVars{main_~i~0=v_main_~i~0_113, main_~n~0=v_main_~n~0_21} AuxVars[] AssignedVars[] [2021-05-01 07:09:31,248 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:31,250 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,252 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,254 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,256 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,258 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,259 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,262 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,264 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:31,265 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:31,267 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,269 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,271 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:31,273 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,275 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,276 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:31,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:31,291 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:31,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:31,305 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:31,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:31,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:31,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:31,330 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:31,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:31,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:31,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:31,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:31,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:31,368 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 07:09:31,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:31,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,426 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:31,449 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,450 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:31,463 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:31,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,478 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:31,501 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,502 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:31,518 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,519 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:31,535 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,537 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:31,554 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:31,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,574 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:31,598 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,599 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:31,619 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,620 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:31,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,642 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:31,669 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,672 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:31,695 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:31,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,720 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:31,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,750 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:31,781 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:31,782 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:31,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:31,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:31,809 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:31,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724240814] [2021-05-01 07:09:31,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1724240814] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:31,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:31,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-05-01 07:09:31,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577607949] [2021-05-01 07:09:31,810 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-01 07:09:31,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:31,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-01 07:09:31,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-05-01 07:09:31,810 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 24 states have internal predecessors, (27), 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 07:09:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:34,584 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2021-05-01 07:09:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-01 07:09:34,584 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 24 states have internal predecessors, (27), 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 31 [2021-05-01 07:09:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:34,585 INFO L225 Difference]: With dead ends: 100 [2021-05-01 07:09:34,585 INFO L226 Difference]: Without dead ends: 98 [2021-05-01 07:09:34,587 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 2496.3ms TimeCoverageRelationStatistics Valid=534, Invalid=4722, Unknown=0, NotChecked=0, Total=5256 [2021-05-01 07:09:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-01 07:09:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 48. [2021-05-01 07:09:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:34,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2021-05-01 07:09:34,594 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 31 [2021-05-01 07:09:34,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:34,594 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2021-05-01 07:09:34,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 25 states have (on average 1.08) internal successors, (27), 24 states have internal predecessors, (27), 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 07:09:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2021-05-01 07:09:34,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-01 07:09:34,595 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:34,595 INFO L519 BasicCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:34,595 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-01 07:09:34,595 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:34,595 INFO L82 PathProgramCache]: Analyzing trace with hash 387199814, now seen corresponding path program 4 times [2021-05-01 07:09:34,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:34,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336195550] [2021-05-01 07:09:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:34,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:34,609 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_133 v_main_~n~0_22) InVars {main_~i~0=v_main_~i~0_133, main_~n~0=v_main_~n~0_22} OutVars{main_~i~0=v_main_~i~0_133, main_~n~0=v_main_~n~0_22} AuxVars[] AssignedVars[] [2021-05-01 07:09:34,611 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:34,611 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,615 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:34,617 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,617 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:34,625 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:34,627 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,630 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,632 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,635 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,637 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,640 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,642 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,643 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,645 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,645 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:34,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:34,660 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:34,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:34,681 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:09:34,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:34,685 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:09:34,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:34,694 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:09:34,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:34,708 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:09:34,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:09:34,751 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:09:34,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:09:34,815 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:09:34,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:09:34,863 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:34,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:34,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:34,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:34,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:34,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:34,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:34,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:09:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:34,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:09:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:34,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:34,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:09:34,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:34,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:34,964 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:34,990 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:34,991 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:35,007 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:35,007 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:35,024 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:35,024 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:35,051 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:35,052 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:35,069 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:35,070 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:35,089 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:35,090 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:35,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:35,110 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:35,110 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336195550] [2021-05-01 07:09:35,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [336195550] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:35,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:35,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-05-01 07:09:35,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6216504] [2021-05-01 07:09:35,110 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:09:35,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:35,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:09:35,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2021-05-01 07:09:35,111 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 17 states have internal predecessors, (24), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:35,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:35,854 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2021-05-01 07:09:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-01 07:09:35,855 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 17 states have internal predecessors, (24), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2021-05-01 07:09:35,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:35,855 INFO L225 Difference]: With dead ends: 72 [2021-05-01 07:09:35,855 INFO L226 Difference]: Without dead ends: 48 [2021-05-01 07:09:35,856 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 918.9ms TimeCoverageRelationStatistics Valid=181, Invalid=1151, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 07:09:35,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-05-01 07:09:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-05-01 07:09:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2021-05-01 07:09:35,862 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 35 [2021-05-01 07:09:35,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:35,862 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2021-05-01 07:09:35,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 17 states have internal predecessors, (24), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:35,862 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2021-05-01 07:09:35,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-01 07:09:35,863 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:35,863 INFO L519 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:35,863 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-01 07:09:35,863 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:35,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:35,863 INFO L82 PathProgramCache]: Analyzing trace with hash -447583578, now seen corresponding path program 10 times [2021-05-01 07:09:35,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:35,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120756162] [2021-05-01 07:09:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:35,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:35,895 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_143 v_main_~n~0_23) InVars {main_~i~0=v_main_~i~0_143, main_~n~0=v_main_~n~0_23} OutVars{main_~i~0=v_main_~i~0_143, main_~n~0=v_main_~n~0_23} AuxVars[] AssignedVars[] [2021-05-01 07:09:35,897 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:35,898 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,900 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,903 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:35,903 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:35,905 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:35,910 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,912 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,914 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,916 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,918 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,920 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,922 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,924 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,926 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,926 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:35,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:35,942 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:35,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:35,971 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:35,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:35,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:35,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:35,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:35,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:35,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:35,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:36,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:36,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:36,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:36,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:36,028 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 07:09:36,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:36,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,073 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:36,097 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,098 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:36,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,113 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:36,134 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,135 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:36,152 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,153 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:36,170 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:36,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,188 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:36,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,212 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:36,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,235 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:36,257 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,258 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:36,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,276 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:36,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,311 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:36,337 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,338 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:36,360 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,360 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:36,383 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,384 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:36,438 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,438 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:36,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,465 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:36,496 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,497 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:36,533 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:36,534 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:36,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:36,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:36,564 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:36,564 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120756162] [2021-05-01 07:09:36,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1120756162] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:36,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:36,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-05-01 07:09:36,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834865681] [2021-05-01 07:09:36,565 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-01 07:09:36,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:36,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-01 07:09:36,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2021-05-01 07:09:36,566 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. Second operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 26 states have internal predecessors, (29), 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 07:09:39,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:39,497 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2021-05-01 07:09:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-01 07:09:39,497 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 26 states have internal predecessors, (29), 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 33 [2021-05-01 07:09:39,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:39,498 INFO L225 Difference]: With dead ends: 102 [2021-05-01 07:09:39,498 INFO L226 Difference]: Without dead ends: 100 [2021-05-01 07:09:39,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 2640.8ms TimeCoverageRelationStatistics Valid=627, Invalid=5379, Unknown=0, NotChecked=0, Total=6006 [2021-05-01 07:09:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-01 07:09:39,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 50. [2021-05-01 07:09:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2021-05-01 07:09:39,506 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 33 [2021-05-01 07:09:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:39,507 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2021-05-01 07:09:39,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 26 states have internal predecessors, (29), 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 07:09:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2021-05-01 07:09:39,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-01 07:09:39,507 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:39,507 INFO L519 BasicCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:39,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-01 07:09:39,507 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:39,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1438192442, now seen corresponding path program 5 times [2021-05-01 07:09:39,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:39,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032394975] [2021-05-01 07:09:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:39,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:39,511 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_165 v_main_~n~0_24) InVars {main_~i~0=v_main_~i~0_165, main_~n~0=v_main_~n~0_24} OutVars{main_~i~0=v_main_~i~0_165, main_~n~0=v_main_~n~0_24} AuxVars[] AssignedVars[] [2021-05-01 07:09:39,513 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:39,513 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,516 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:39,518 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,518 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:39,520 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:39,523 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,525 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,527 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,529 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,531 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,533 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,534 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,536 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,537 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,538 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:39,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:39,552 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:39,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:39,568 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:39,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:39,572 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:09:39,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:39,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:39,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:39,592 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:09:39,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:09:39,621 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:09:39,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:09:39,671 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:09:39,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:09:39,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:39,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:39,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:39,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:39,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:39,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:09:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:39,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:39,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:09:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:39,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:09:39,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:39,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,819 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:39,846 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:39,847 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:39,863 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:39,864 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:39,880 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:39,881 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:39,899 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:39,899 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:39,918 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:39,919 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:39,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,938 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:39,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,964 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:39,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:39,990 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:40,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:40,018 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:40,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032394975] [2021-05-01 07:09:40,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2032394975] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:40,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:40,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-05-01 07:09:40,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48655580] [2021-05-01 07:09:40,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 07:09:40,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:40,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 07:09:40,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-05-01 07:09:40,019 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:40,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:40,903 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2021-05-01 07:09:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-01 07:09:40,903 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2021-05-01 07:09:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:40,904 INFO L225 Difference]: With dead ends: 74 [2021-05-01 07:09:40,904 INFO L226 Difference]: Without dead ends: 50 [2021-05-01 07:09:40,905 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1034.3ms TimeCoverageRelationStatistics Valid=232, Invalid=1490, Unknown=0, NotChecked=0, Total=1722 [2021-05-01 07:09:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-05-01 07:09:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-05-01 07:09:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 42 states have internal predecessors, (53), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:40,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2021-05-01 07:09:40,912 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 37 [2021-05-01 07:09:40,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:40,912 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2021-05-01 07:09:40,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.3) internal successors, (26), 19 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2021-05-01 07:09:40,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-01 07:09:40,913 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:40,913 INFO L519 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:40,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-01 07:09:40,913 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:40,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:40,913 INFO L82 PathProgramCache]: Analyzing trace with hash 283477030, now seen corresponding path program 11 times [2021-05-01 07:09:40,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:40,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607855892] [2021-05-01 07:09:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:40,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:40,918 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_177 v_main_~n~0_25) InVars {main_~i~0=v_main_~i~0_177, main_~n~0=v_main_~n~0_25} OutVars{main_~i~0=v_main_~i~0_177, main_~n~0=v_main_~n~0_25} AuxVars[] AssignedVars[] [2021-05-01 07:09:40,920 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:40,920 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,924 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:40,927 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,927 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:40,930 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:40,933 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,936 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,940 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,943 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,945 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,948 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,950 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,953 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,954 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,955 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:40,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:40,971 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:40,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:40,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:40,993 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:40,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:40,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:40,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:41,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:41,011 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:41,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:41,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:41,020 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:41,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:41,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:41,047 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 07:09:41,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:41,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,098 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:41,125 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:41,125 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:41,140 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:41,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:41,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,157 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:41,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,178 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:41,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,201 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:41,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,224 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:41,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,250 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:41,277 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:41,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:41,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,299 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:41,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,327 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:41,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,355 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:41,383 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:41,384 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:41,407 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:41,408 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:41,432 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:41,433 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:41,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,459 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:41,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,489 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:41,521 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:41,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:41,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,550 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:41,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,584 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:41,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,619 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:41,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:41,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:41,656 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:41,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607855892] [2021-05-01 07:09:41,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1607855892] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:41,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:41,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-05-01 07:09:41,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710571664] [2021-05-01 07:09:41,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-01 07:09:41,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:41,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-01 07:09:41,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2021-05-01 07:09:41,657 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 states have internal predecessors, (31), 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 07:09:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:44,791 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2021-05-01 07:09:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-01 07:09:44,792 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 states have internal predecessors, (31), 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 35 [2021-05-01 07:09:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:44,793 INFO L225 Difference]: With dead ends: 104 [2021-05-01 07:09:44,793 INFO L226 Difference]: Without dead ends: 102 [2021-05-01 07:09:44,796 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1379 ImplicationChecksByTransitivity, 2754.0ms TimeCoverageRelationStatistics Valid=582, Invalid=5898, Unknown=0, NotChecked=0, Total=6480 [2021-05-01 07:09:44,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-01 07:09:44,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 52. [2021-05-01 07:09:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.3255813953488371) internal successors, (57), 44 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-05-01 07:09:44,821 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 35 [2021-05-01 07:09:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:44,822 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-05-01 07:09:44,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 28 states have internal predecessors, (31), 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 07:09:44,823 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-05-01 07:09:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 07:09:44,823 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:44,823 INFO L519 BasicCegarLoop]: trace histogram [11, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:44,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-01 07:09:44,823 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:44,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:44,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1001473606, now seen corresponding path program 6 times [2021-05-01 07:09:44,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:44,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566228479] [2021-05-01 07:09:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:44,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:44,831 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_201 v_main_~n~0_26) InVars {main_~i~0=v_main_~i~0_201, main_~n~0=v_main_~n~0_26} OutVars{main_~i~0=v_main_~i~0_201, main_~n~0=v_main_~n~0_26} AuxVars[] AssignedVars[] [2021-05-01 07:09:44,833 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:44,850 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,852 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,855 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,857 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,858 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,859 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,864 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:44,867 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,867 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:44,870 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:44,872 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,874 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,876 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,878 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,893 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:44,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:44,908 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:44,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:44,962 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:44,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:44,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:44,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:44,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:45,007 INFO L142 QuantifierPusher]: treesize reduction 20, result has 88.3 percent of original size [2021-05-01 07:09:45,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-05-01 07:09:45,059 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.1 percent of original size [2021-05-01 07:09:45,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-05-01 07:09:45,133 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:09:45,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:09:45,223 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:45,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:45,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:45,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:45,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:45,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:45,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:45,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:09:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:45,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:09:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:45,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:45,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:09:45,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:45,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,399 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:45,441 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:45,441 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:45,458 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:45,458 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:45,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,491 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:45,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,529 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:45,569 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:45,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:45,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,591 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:45,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,632 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:45,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,674 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:45,719 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:45,722 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:45,746 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:45,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:45,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:45,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:45,777 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:45,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566228479] [2021-05-01 07:09:45,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [566228479] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:45,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:45,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-05-01 07:09:45,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675031158] [2021-05-01 07:09:45,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-01 07:09:45,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:45,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-01 07:09:45,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-05-01 07:09:45,778 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:46,773 INFO L93 Difference]: Finished difference Result 76 states and 92 transitions. [2021-05-01 07:09:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-01 07:09:46,774 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2021-05-01 07:09:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:46,775 INFO L225 Difference]: With dead ends: 76 [2021-05-01 07:09:46,775 INFO L226 Difference]: Without dead ends: 52 [2021-05-01 07:09:46,775 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1417.3ms TimeCoverageRelationStatistics Valid=225, Invalid=1755, Unknown=0, NotChecked=0, Total=1980 [2021-05-01 07:09:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-01 07:09:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-05-01 07:09:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 44 states have internal predecessors, (55), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2021-05-01 07:09:46,782 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 39 [2021-05-01 07:09:46,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:46,783 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2021-05-01 07:09:46,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 21 states have internal predecessors, (28), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2021-05-01 07:09:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-01 07:09:46,783 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:46,783 INFO L519 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:46,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-01 07:09:46,783 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:46,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:46,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1541915226, now seen corresponding path program 12 times [2021-05-01 07:09:46,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:46,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316898781] [2021-05-01 07:09:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:46,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:46,792 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_215 v_main_~n~0_27) InVars {main_~i~0=v_main_~i~0_215, main_~n~0=v_main_~n~0_27} OutVars{main_~i~0=v_main_~i~0_215, main_~n~0=v_main_~n~0_27} AuxVars[] AssignedVars[] [2021-05-01 07:09:46,793 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:46,794 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,797 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:46,799 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,800 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:46,802 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:46,804 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,807 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,809 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,811 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,813 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,815 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,816 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,818 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,820 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,820 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:46,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:46,841 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:46,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:46,862 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:46,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:46,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:46,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:46,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:46,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:46,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:46,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:46,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:46,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:46,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:46,936 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 07:09:46,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:46,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:46,982 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:47,005 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,005 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:47,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,019 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:47,036 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,061 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:47,077 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,077 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:47,101 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:47,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,119 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:47,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,159 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:47,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,182 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:47,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,215 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:47,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,247 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:47,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,278 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:47,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,309 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:47,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,340 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:47,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,372 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:47,405 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,406 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:47,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,435 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:47,470 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,471 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:47,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,501 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:47,538 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,539 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:47,571 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:47,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,606 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:47,646 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:47,646 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:47,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:47,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:47,682 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:47,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316898781] [2021-05-01 07:09:47,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [316898781] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:47,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:47,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2021-05-01 07:09:47,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482745574] [2021-05-01 07:09:47,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-01 07:09:47,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:47,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-01 07:09:47,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 07:09:47,683 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 30 states have internal predecessors, (33), 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 07:09:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:51,100 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2021-05-01 07:09:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-01 07:09:51,101 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 30 states have internal predecessors, (33), 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 37 [2021-05-01 07:09:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:51,102 INFO L225 Difference]: With dead ends: 106 [2021-05-01 07:09:51,102 INFO L226 Difference]: Without dead ends: 104 [2021-05-01 07:09:51,103 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1532 ImplicationChecksByTransitivity, 3162.7ms TimeCoverageRelationStatistics Valid=683, Invalid=6627, Unknown=0, NotChecked=0, Total=7310 [2021-05-01 07:09:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-05-01 07:09:51,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 54. [2021-05-01 07:09:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 46 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:51,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2021-05-01 07:09:51,111 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 37 [2021-05-01 07:09:51,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:51,112 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2021-05-01 07:09:51,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 30 states have internal predecessors, (33), 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 07:09:51,112 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2021-05-01 07:09:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-01 07:09:51,112 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:51,112 INFO L519 BasicCegarLoop]: trace histogram [13, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:51,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-01 07:09:51,112 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:51,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:51,113 INFO L82 PathProgramCache]: Analyzing trace with hash 468402118, now seen corresponding path program 7 times [2021-05-01 07:09:51,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:51,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152799618] [2021-05-01 07:09:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:51,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:51,116 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_241 v_main_~n~0_28) InVars {main_~i~0=v_main_~i~0_241, main_~n~0=v_main_~n~0_28} OutVars{main_~i~0=v_main_~i~0_241, main_~n~0=v_main_~n~0_28} AuxVars[] AssignedVars[] [2021-05-01 07:09:51,118 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:51,118 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,121 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,123 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:51,123 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:51,125 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:51,127 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,129 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,131 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,133 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,135 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,137 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,140 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,142 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:51,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:51,156 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:51,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:51,170 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:51,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:51,174 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:09:51,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:51,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:51,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:51,194 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:09:51,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:09:51,223 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:09:51,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:09:51,284 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:09:51,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:09:51,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:51,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:51,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:51,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:51,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:51,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:09:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:51,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:51,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:09:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:51,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:09:51,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:51,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,429 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:51,456 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:51,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:51,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,473 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:51,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,495 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:51,519 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:51,519 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:51,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,539 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:51,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,564 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:51,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,589 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:51,616 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:51,617 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:51,639 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:51,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:51,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,663 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:51,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,692 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:51,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,722 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:51,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:51,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:51,753 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:51,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152799618] [2021-05-01 07:09:51,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1152799618] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:51,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:51,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-05-01 07:09:51,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211880383] [2021-05-01 07:09:51,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-01 07:09:51,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-01 07:09:51,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-05-01 07:09:51,754 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 23 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:52,796 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2021-05-01 07:09:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-01 07:09:52,797 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 23 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2021-05-01 07:09:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:52,797 INFO L225 Difference]: With dead ends: 78 [2021-05-01 07:09:52,797 INFO L226 Difference]: Without dead ends: 54 [2021-05-01 07:09:52,798 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1271.5ms TimeCoverageRelationStatistics Valid=284, Invalid=2166, Unknown=0, NotChecked=0, Total=2450 [2021-05-01 07:09:52,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-01 07:09:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-05-01 07:09:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 46 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2021-05-01 07:09:52,804 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 41 [2021-05-01 07:09:52,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:52,804 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2021-05-01 07:09:52,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 24 states have (on average 1.25) internal successors, (30), 23 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:52,805 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2021-05-01 07:09:52,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-01 07:09:52,805 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:52,805 INFO L519 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:52,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-01 07:09:52,805 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:52,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:52,805 INFO L82 PathProgramCache]: Analyzing trace with hash 897750822, now seen corresponding path program 13 times [2021-05-01 07:09:52,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:52,805 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245588387] [2021-05-01 07:09:52,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:52,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:52,809 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_257 v_main_~n~0_29) InVars {main_~i~0=v_main_~i~0_257, main_~n~0=v_main_~n~0_29} OutVars{main_~i~0=v_main_~i~0_257, main_~n~0=v_main_~n~0_29} AuxVars[] AssignedVars[] [2021-05-01 07:09:52,810 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:52,812 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,814 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,816 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,818 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,820 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,821 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,824 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:52,826 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,827 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:52,829 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:52,831 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,833 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,835 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,837 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,838 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:52,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:52,854 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:52,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:52,863 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:52,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:52,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:52,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:52,879 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:52,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:52,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:52,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:52,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:52,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:52,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:52,914 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 07:09:52,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:52,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:52,962 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:52,986 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:52,987 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:53,000 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:53,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,015 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:53,035 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,035 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:53,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,052 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:53,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,073 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:53,096 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,097 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:53,116 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,117 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:53,137 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,137 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:53,159 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:53,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,181 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:53,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,209 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:53,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,237 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:53,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,267 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:53,297 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,298 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:53,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,324 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:53,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,357 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:53,390 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:53,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,420 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:53,455 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,455 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:53,486 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,487 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:53,519 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:53,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,552 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:53,592 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:53,593 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:53,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:53,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:53,628 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:53,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245588387] [2021-05-01 07:09:53,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [245588387] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:53,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:53,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-05-01 07:09:53,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987490363] [2021-05-01 07:09:53,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-01 07:09:53,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:53,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-01 07:09:53,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 07:09:53,629 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 states have internal predecessors, (35), 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 07:09:57,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:57,483 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2021-05-01 07:09:57,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-01 07:09:57,484 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 states have internal predecessors, (35), 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 39 [2021-05-01 07:09:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:57,485 INFO L225 Difference]: With dead ends: 108 [2021-05-01 07:09:57,485 INFO L226 Difference]: Without dead ends: 106 [2021-05-01 07:09:57,486 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1617 ImplicationChecksByTransitivity, 3232.1ms TimeCoverageRelationStatistics Valid=630, Invalid=7202, Unknown=0, NotChecked=0, Total=7832 [2021-05-01 07:09:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-05-01 07:09:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 56. [2021-05-01 07:09:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.297872340425532) internal successors, (61), 48 states have internal predecessors, (61), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2021-05-01 07:09:57,494 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 39 [2021-05-01 07:09:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:57,494 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2021-05-01 07:09:57,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 32 states have internal predecessors, (35), 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 07:09:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2021-05-01 07:09:57,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-01 07:09:57,495 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:57,495 INFO L519 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:57,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-01 07:09:57,495 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:57,495 INFO L82 PathProgramCache]: Analyzing trace with hash -712189626, now seen corresponding path program 8 times [2021-05-01 07:09:57,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:57,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65265785] [2021-05-01 07:09:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:57,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:57,500 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_285 v_main_~n~0_30) InVars {main_~i~0=v_main_~i~0_285, main_~n~0=v_main_~n~0_30} OutVars{main_~i~0=v_main_~i~0_285, main_~n~0=v_main_~n~0_30} AuxVars[] AssignedVars[] [2021-05-01 07:09:57,502 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:57,503 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,507 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:57,509 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,510 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:57,513 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:57,515 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,518 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,520 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,523 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,526 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,527 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,529 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,531 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,533 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,534 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:57,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:57,552 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:57,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:57,569 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:09:57,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:57,574 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:09:57,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:09:57,584 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:09:57,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:09:57,600 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:09:57,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:09:57,655 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:09:57,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:09:57,713 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:09:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:09:57,769 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:57,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:57,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:57,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:57,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:57,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:57,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:57,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:09:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:57,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:09:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:57,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:57,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:09:57,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:57,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:57,890 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:09:57,921 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:57,921 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:57,939 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:57,940 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:57,958 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:57,959 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:57,979 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:57,979 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:58,000 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:58,000 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:58,021 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:58,022 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:58,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:58,044 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:09:58,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:58,073 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:58,104 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:58,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:58,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:58,130 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:58,161 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:58,162 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:09:58,190 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:58,191 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:58,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:58,220 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:58,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:58,254 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:58,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:58,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:58,291 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:09:58,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65265785] [2021-05-01 07:09:58,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [65265785] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:09:58,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:09:58,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-05-01 07:09:58,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203235902] [2021-05-01 07:09:58,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-01 07:09:58,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:09:58,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-01 07:09:58,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2021-05-01 07:09:58,292 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 25 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:09:59,581 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2021-05-01 07:09:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-01 07:09:59,587 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 25 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 43 [2021-05-01 07:09:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:09:59,587 INFO L225 Difference]: With dead ends: 80 [2021-05-01 07:09:59,587 INFO L226 Difference]: Without dead ends: 56 [2021-05-01 07:09:59,588 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1562.4ms TimeCoverageRelationStatistics Valid=269, Invalid=2487, Unknown=0, NotChecked=0, Total=2756 [2021-05-01 07:09:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-01 07:09:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-01 07:09:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 48 states have internal predecessors, (59), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:09:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2021-05-01 07:09:59,595 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 43 [2021-05-01 07:09:59,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:09:59,595 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2021-05-01 07:09:59,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 25 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:09:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2021-05-01 07:09:59,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-01 07:09:59,596 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:09:59,596 INFO L519 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:09:59,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-01 07:09:59,596 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:09:59,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:09:59,607 INFO L82 PathProgramCache]: Analyzing trace with hash 364679334, now seen corresponding path program 14 times [2021-05-01 07:09:59,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:09:59,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121614004] [2021-05-01 07:09:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:09:59,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:59,614 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_303 v_main_~n~0_31) InVars {main_~i~0=v_main_~i~0_303, main_~n~0=v_main_~n~0_31} OutVars{main_~i~0=v_main_~i~0_303, main_~n~0=v_main_~n~0_31} AuxVars[] AssignedVars[] [2021-05-01 07:09:59,616 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:09:59,618 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,622 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,624 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,626 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,628 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,633 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:59,636 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,636 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:09:59,638 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:09:59,641 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,644 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,649 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,651 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,651 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:09:59,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:09:59,668 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:09:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:59,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:59,698 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:09:59,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:09:59,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:09:59,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:09:59,734 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:09:59,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:09:59,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:59,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:09:59,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:59,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:09:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:09:59,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:09:59,782 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 07:09:59,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:09:59,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,834 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:09:59,859 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:59,859 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:59,874 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:59,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:09:59,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,890 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:09:59,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,910 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:09:59,932 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:59,932 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:09:59,950 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:59,951 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:09:59,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:09:59,970 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:09:59,995 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:09:59,995 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:00,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:00,018 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:00,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:00,045 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:00,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:00,073 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:00,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:00,102 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:00,138 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,138 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:00,164 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,164 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:00,190 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,191 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:00,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:00,218 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:00,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:00,252 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:00,286 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,287 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:00,317 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,317 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:00,348 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,349 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:00,381 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,381 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:00,414 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,415 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:00,449 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:00,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:00,485 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:00,527 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,527 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:00,564 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:00,564 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:00,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:00,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:00,602 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:00,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121614004] [2021-05-01 07:10:00,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1121614004] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:00,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:00,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-05-01 07:10:00,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300576853] [2021-05-01 07:10:00,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-01 07:10:00,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:00,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-01 07:10:00,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 07:10:00,603 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 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 07:10:04,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:04,592 INFO L93 Difference]: Finished difference Result 110 states and 135 transitions. [2021-05-01 07:10:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-01 07:10:04,593 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 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 41 [2021-05-01 07:10:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:04,593 INFO L225 Difference]: With dead ends: 110 [2021-05-01 07:10:04,593 INFO L226 Difference]: Without dead ends: 108 [2021-05-01 07:10:04,594 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1742 ImplicationChecksByTransitivity, 3496.0ms TimeCoverageRelationStatistics Valid=654, Invalid=7902, Unknown=0, NotChecked=0, Total=8556 [2021-05-01 07:10:04,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-05-01 07:10:04,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 58. [2021-05-01 07:10:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 50 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2021-05-01 07:10:04,602 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 41 [2021-05-01 07:10:04,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:04,602 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2021-05-01 07:10:04,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 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 07:10:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2021-05-01 07:10:04,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-01 07:10:04,603 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:04,603 INFO L519 BasicCegarLoop]: trace histogram [17, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:04,603 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-01 07:10:04,603 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:04,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1389489466, now seen corresponding path program 9 times [2021-05-01 07:10:04,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:04,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742888567] [2021-05-01 07:10:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:04,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:04,607 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_333 v_main_~n~0_32) InVars {main_~i~0=v_main_~i~0_333, main_~n~0=v_main_~n~0_32} OutVars{main_~i~0=v_main_~i~0_333, main_~n~0=v_main_~n~0_32} AuxVars[] AssignedVars[] [2021-05-01 07:10:04,608 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:04,609 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,611 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,614 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:04,614 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:04,617 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,618 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,622 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:04,624 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,626 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,628 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,629 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,631 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,633 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,633 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:04,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:04,648 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:04,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:04,660 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:10:04,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:04,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:04,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:04,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:04,685 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:10:04,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:10:04,716 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:10:04,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:10:04,767 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:10:04,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:10:04,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:04,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:04,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:04,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:04,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:04,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:04,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:10:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:04,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:04,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:10:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:04,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:10:04,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:04,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,915 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:10:04,943 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:04,943 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:04,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,959 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:04,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:04,981 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:05,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:05,004 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:05,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:05,028 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:05,053 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:05,053 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:05,074 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:05,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:05,097 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:05,098 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:05,126 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:05,126 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:05,150 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:05,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:05,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:05,175 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:05,206 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:05,207 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:05,234 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:05,234 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:05,262 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:05,263 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:05,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:05,292 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:05,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:05,327 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:05,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:05,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:05,364 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:05,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742888567] [2021-05-01 07:10:05,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1742888567] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:05,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:05,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-05-01 07:10:05,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709782295] [2021-05-01 07:10:05,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-01 07:10:05,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:05,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-01 07:10:05,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=810, Unknown=0, NotChecked=0, Total=930 [2021-05-01 07:10:05,365 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 27 states have internal predecessors, (34), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:06,756 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2021-05-01 07:10:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-01 07:10:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 27 states have internal predecessors, (34), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2021-05-01 07:10:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:06,758 INFO L225 Difference]: With dead ends: 82 [2021-05-01 07:10:06,758 INFO L226 Difference]: Without dead ends: 58 [2021-05-01 07:10:06,758 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 1599.1ms TimeCoverageRelationStatistics Valid=336, Invalid=2970, Unknown=0, NotChecked=0, Total=3306 [2021-05-01 07:10:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-01 07:10:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-05-01 07:10:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2021-05-01 07:10:06,766 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 45 [2021-05-01 07:10:06,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:06,766 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2021-05-01 07:10:06,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 27 states have internal predecessors, (34), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:06,766 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2021-05-01 07:10:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-01 07:10:06,766 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:06,766 INFO L519 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:06,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-01 07:10:06,767 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:06,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:06,767 INFO L82 PathProgramCache]: Analyzing trace with hash -815912410, now seen corresponding path program 15 times [2021-05-01 07:10:06,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:06,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595784173] [2021-05-01 07:10:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:06,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:06,770 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_353 v_main_~n~0_33) InVars {main_~i~0=v_main_~i~0_353, main_~n~0=v_main_~n~0_33} OutVars{main_~i~0=v_main_~i~0_353, main_~n~0=v_main_~n~0_33} AuxVars[] AssignedVars[] [2021-05-01 07:10:06,772 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:06,772 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,775 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,778 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:06,778 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:06,780 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:06,783 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,785 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,788 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,790 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,793 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,794 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,797 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,798 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,800 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,801 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:06,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:06,817 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:06,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:06,826 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:10:06,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:06,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:06,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:06,845 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:10:06,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:06,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:06,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:06,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:06,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:06,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:06,883 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 07:10:06,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:06,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,935 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:10:06,960 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:06,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:06,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:06,974 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:06,994 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:06,995 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:07,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,011 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:07,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,032 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:07,055 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,056 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:07,075 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,075 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:07,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,095 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:07,121 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,122 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:07,143 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,144 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:07,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,166 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:07,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,194 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:07,224 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,224 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:07,249 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,250 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:07,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,277 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:07,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,309 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:07,338 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,339 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:07,368 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:07,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,405 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:07,442 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,443 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:07,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,475 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:07,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,514 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:07,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,554 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:07,594 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,595 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:07,631 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,632 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:07,669 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,670 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:07,708 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:07,709 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:07,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,749 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:07,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:07,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:07,795 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:07,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595784173] [2021-05-01 07:10:07,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [595784173] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:07,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:07,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [] total 38 [2021-05-01 07:10:07,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542290725] [2021-05-01 07:10:07,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-01 07:10:07,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:07,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-01 07:10:07,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1346, Unknown=0, NotChecked=0, Total=1482 [2021-05-01 07:10:07,796 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 36 states have internal predecessors, (39), 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 07:10:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:12,508 INFO L93 Difference]: Finished difference Result 112 states and 137 transitions. [2021-05-01 07:10:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-01 07:10:12,509 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 36 states have internal predecessors, (39), 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 43 [2021-05-01 07:10:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:12,510 INFO L225 Difference]: With dead ends: 112 [2021-05-01 07:10:12,510 INFO L226 Difference]: Without dead ends: 110 [2021-05-01 07:10:12,511 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 4127.7ms TimeCoverageRelationStatistics Valid=678, Invalid=8634, Unknown=0, NotChecked=0, Total=9312 [2021-05-01 07:10:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-01 07:10:12,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 60. [2021-05-01 07:10:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 52 states have internal predecessors, (65), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2021-05-01 07:10:12,521 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 43 [2021-05-01 07:10:12,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:12,521 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2021-05-01 07:10:12,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 37 states have (on average 1.054054054054054) internal successors, (39), 36 states have internal predecessors, (39), 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 07:10:12,521 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2021-05-01 07:10:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 07:10:12,521 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:12,522 INFO L519 BasicCegarLoop]: trace histogram [19, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:12,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-01 07:10:12,522 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:12,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:12,522 INFO L82 PathProgramCache]: Analyzing trace with hash 560393286, now seen corresponding path program 10 times [2021-05-01 07:10:12,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:12,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715061071] [2021-05-01 07:10:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:12,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:12,527 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_385 v_main_~n~0_34) InVars {main_~i~0=v_main_~i~0_385, main_~n~0=v_main_~n~0_34} OutVars{main_~i~0=v_main_~i~0_385, main_~n~0=v_main_~n~0_34} AuxVars[] AssignedVars[] [2021-05-01 07:10:12,529 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:12,531 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,534 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,536 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,538 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,541 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,541 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,546 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:12,548 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,549 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:12,552 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:12,555 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,557 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,559 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,562 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,563 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:12,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:12,581 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:12,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:12,596 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:10:12,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:12,601 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:10:12,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:12,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:12,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:12,626 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:10:12,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:10:12,663 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:10:12,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:10:12,718 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:10:12,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:10:12,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:12,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:12,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:12,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:12,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:12,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:12,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:10:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:12,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:12,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:10:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:12,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:10:12,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:12,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,888 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:10:12,920 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:12,921 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:12,940 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:12,941 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:12,960 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:12,961 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:12,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:12,982 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:13,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:13,010 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:13,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:13,039 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:13,069 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:13,069 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:13,095 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:13,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:13,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:13,122 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:13,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:13,155 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:13,190 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:13,191 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:13,221 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:13,222 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:13,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:13,253 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:13,291 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:13,291 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:13,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:13,325 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:13,365 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:13,366 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:13,402 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:13,403 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:13,440 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:13,440 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:13,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:13,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:13,478 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:13,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715061071] [2021-05-01 07:10:13,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1715061071] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:13,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:13,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2021-05-01 07:10:13,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089716747] [2021-05-01 07:10:13,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-01 07:10:13,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:13,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-01 07:10:13,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:10:13,480 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:15,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:15,161 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2021-05-01 07:10:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-01 07:10:15,162 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2021-05-01 07:10:15,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:15,163 INFO L225 Difference]: With dead ends: 84 [2021-05-01 07:10:15,163 INFO L226 Difference]: Without dead ends: 60 [2021-05-01 07:10:15,163 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 1980.6ms TimeCoverageRelationStatistics Valid=362, Invalid=3420, Unknown=0, NotChecked=0, Total=3782 [2021-05-01 07:10:15,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-01 07:10:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-01 07:10:15,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 52 states have internal predecessors, (63), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-05-01 07:10:15,172 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 47 [2021-05-01 07:10:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:15,172 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-05-01 07:10:15,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 30 states have (on average 1.2) internal successors, (36), 29 states have internal predecessors, (36), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-05-01 07:10:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-01 07:10:15,172 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:15,172 INFO L519 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:15,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-01 07:10:15,173 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:15,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1493212250, now seen corresponding path program 16 times [2021-05-01 07:10:15,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:15,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960008513] [2021-05-01 07:10:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:15,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:15,178 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_407 v_main_~n~0_35) InVars {main_~i~0=v_main_~i~0_407, main_~n~0=v_main_~n~0_35} OutVars{main_~i~0=v_main_~i~0_407, main_~n~0=v_main_~n~0_35} AuxVars[] AssignedVars[] [2021-05-01 07:10:15,179 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:15,182 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,185 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,187 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,189 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,192 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,192 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,196 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:15,199 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,200 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:15,202 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:15,205 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,207 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,210 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,213 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:15,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:15,232 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:15,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:15,243 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:10:15,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:15,248 INFO L142 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-05-01 07:10:15,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:15,259 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-05-01 07:10:15,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:10:15,277 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:10:15,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:15,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:15,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:15,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:15,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:15,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:15,320 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 07:10:15,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:15,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,378 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:10:15,407 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,408 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:15,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,424 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:15,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,447 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:15,471 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,472 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:15,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,492 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:15,518 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,519 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:15,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,541 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:15,569 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,570 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:15,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,594 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:15,625 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:15,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,658 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:15,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,691 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:15,725 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,726 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:15,756 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:15,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,787 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:15,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,824 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:15,862 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:15,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:15,897 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:15,937 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,938 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:15,974 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:15,975 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:16,012 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:16,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:16,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:16,051 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:16,097 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:16,098 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:16,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:16,138 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:16,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:16,186 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:16,234 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:16,235 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:16,278 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:16,279 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:16,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:16,323 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:16,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:16,375 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:16,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:16,428 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:16,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:16,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:16,482 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:16,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960008513] [2021-05-01 07:10:16,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1960008513] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:16,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:16,482 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2021-05-01 07:10:16,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864163745] [2021-05-01 07:10:16,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-01 07:10:16,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:16,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-01 07:10:16,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1496, Unknown=0, NotChecked=0, Total=1640 [2021-05-01 07:10:16,483 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 38 states have internal predecessors, (41), 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 07:10:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:21,550 INFO L93 Difference]: Finished difference Result 114 states and 139 transitions. [2021-05-01 07:10:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-01 07:10:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 38 states have internal predecessors, (41), 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 45 [2021-05-01 07:10:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:21,552 INFO L225 Difference]: With dead ends: 114 [2021-05-01 07:10:21,552 INFO L226 Difference]: Without dead ends: 112 [2021-05-01 07:10:21,553 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2004 ImplicationChecksByTransitivity, 4607.0ms TimeCoverageRelationStatistics Valid=702, Invalid=9398, Unknown=0, NotChecked=0, Total=10100 [2021-05-01 07:10:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-01 07:10:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 62. [2021-05-01 07:10:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 54 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2021-05-01 07:10:21,562 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 45 [2021-05-01 07:10:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:21,562 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2021-05-01 07:10:21,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 38 states have internal predecessors, (41), 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 07:10:21,562 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2021-05-01 07:10:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-01 07:10:21,563 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:21,563 INFO L519 BasicCegarLoop]: trace histogram [21, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:21,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-01 07:10:21,563 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:21,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1791976902, now seen corresponding path program 11 times [2021-05-01 07:10:21,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:21,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32928896] [2021-05-01 07:10:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:21,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:21,568 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_441 v_main_~n~0_36) InVars {main_~i~0=v_main_~i~0_441, main_~n~0=v_main_~n~0_36} OutVars{main_~i~0=v_main_~i~0_441, main_~n~0=v_main_~n~0_36} AuxVars[] AssignedVars[] [2021-05-01 07:10:21,569 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:21,572 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,575 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,577 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,579 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,582 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,582 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,586 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,589 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:21,589 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:21,592 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,595 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,598 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,600 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:21,603 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,604 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:21,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:21,624 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:21,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:21,636 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:10:21,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:21,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:21,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:21,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:21,668 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:10:21,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:10:21,705 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:10:21,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:10:21,764 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:10:21,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:10:21,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:21,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:21,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:21,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:21,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:21,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:10:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:21,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:21,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:10:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:21,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:10:21,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:21,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,941 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:10:21,976 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:21,977 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:21,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:21,997 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:22,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:22,023 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:22,050 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,051 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:22,073 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,074 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:22,099 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,100 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:22,126 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,127 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:22,152 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,153 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:22,180 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:22,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:22,210 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:22,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:22,249 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:22,286 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,287 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:22,318 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,319 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:22,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:22,354 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:22,397 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,397 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:22,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:22,434 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:22,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:22,486 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:22,529 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,530 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:22,570 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:22,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:22,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:22,610 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:22,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:22,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:22,656 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:22,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32928896] [2021-05-01 07:10:22,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [32928896] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:22,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:22,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2021-05-01 07:10:22,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471177328] [2021-05-01 07:10:22,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-01 07:10:22,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:22,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-01 07:10:22,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2021-05-01 07:10:22,658 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 31 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:24,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:24,573 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2021-05-01 07:10:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-01 07:10:24,573 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.1875) internal successors, (38), 31 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2021-05-01 07:10:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:24,574 INFO L225 Difference]: With dead ends: 86 [2021-05-01 07:10:24,574 INFO L226 Difference]: Without dead ends: 62 [2021-05-01 07:10:24,574 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 2245.8ms TimeCoverageRelationStatistics Valid=388, Invalid=3902, Unknown=0, NotChecked=0, Total=4290 [2021-05-01 07:10:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-01 07:10:24,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-05-01 07:10:24,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 54 states have internal predecessors, (65), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2021-05-01 07:10:24,591 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 49 [2021-05-01 07:10:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:24,591 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2021-05-01 07:10:24,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 32 states have (on average 1.1875) internal successors, (38), 31 states have internal predecessors, (38), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2021-05-01 07:10:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-01 07:10:24,592 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:24,592 INFO L519 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:24,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-01 07:10:24,592 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:24,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:24,592 INFO L82 PathProgramCache]: Analyzing trace with hash 456670502, now seen corresponding path program 17 times [2021-05-01 07:10:24,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:24,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736737037] [2021-05-01 07:10:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:24,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:24,596 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_465 v_main_~n~0_37) InVars {main_~i~0=v_main_~i~0_465, main_~n~0=v_main_~n~0_37} OutVars{main_~i~0=v_main_~i~0_465, main_~n~0=v_main_~n~0_37} AuxVars[] AssignedVars[] [2021-05-01 07:10:24,597 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:24,598 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,600 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,603 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:24,603 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:24,606 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,607 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:24,609 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,611 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,614 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,617 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,618 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,622 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,623 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,624 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:24,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:24,639 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:24,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:24,691 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:10:24,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:24,697 INFO L142 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-05-01 07:10:24,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:24,708 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-05-01 07:10:24,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:10:24,725 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:10:24,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:24,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:24,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:24,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:24,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:24,766 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 07:10:24,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:24,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,828 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:10:24,857 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:24,858 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:24,874 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:24,874 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:24,892 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:24,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:24,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,912 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:24,939 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:24,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:24,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,961 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:24,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:24,989 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:25,018 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,019 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:25,044 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,045 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:25,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,073 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:25,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,106 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:25,140 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,141 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:25,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,170 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:25,208 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,209 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:25,242 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,243 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:25,279 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,280 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:25,316 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,316 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:25,351 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,352 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:25,388 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,389 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:25,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,429 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:25,472 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,473 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:25,512 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,513 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:25,556 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,557 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:25,597 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:25,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,641 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:25,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,693 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:25,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,743 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:25,797 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,798 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:25,846 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:25,847 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:25,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,894 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:25,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:25,958 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:26,014 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:26,014 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:26,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:26,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:26,069 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:26,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736737037] [2021-05-01 07:10:26,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [736737037] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:26,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:26,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [] total 42 [2021-05-01 07:10:26,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108637034] [2021-05-01 07:10:26,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-01 07:10:26,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:26,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-01 07:10:26,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1654, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 07:10:26,070 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 40 states have internal predecessors, (43), 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 07:10:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:31,640 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2021-05-01 07:10:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-01 07:10:31,640 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 40 states have internal predecessors, (43), 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 47 [2021-05-01 07:10:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:31,642 INFO L225 Difference]: With dead ends: 116 [2021-05-01 07:10:31,642 INFO L226 Difference]: Without dead ends: 114 [2021-05-01 07:10:31,643 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2141 ImplicationChecksByTransitivity, 4883.1ms TimeCoverageRelationStatistics Valid=726, Invalid=10194, Unknown=0, NotChecked=0, Total=10920 [2021-05-01 07:10:31,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-05-01 07:10:31,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 64. [2021-05-01 07:10:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 56 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2021-05-01 07:10:31,654 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 47 [2021-05-01 07:10:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:31,654 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2021-05-01 07:10:31,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 41 states have (on average 1.048780487804878) internal successors, (43), 40 states have internal predecessors, (43), 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 07:10:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2021-05-01 07:10:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-01 07:10:31,655 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:31,655 INFO L519 BasicCegarLoop]: trace histogram [23, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:31,655 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-01 07:10:31,655 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:31,655 INFO L82 PathProgramCache]: Analyzing trace with hash -67141818, now seen corresponding path program 12 times [2021-05-01 07:10:31,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:31,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318709417] [2021-05-01 07:10:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:31,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:31,660 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_501 v_main_~n~0_38) InVars {main_~i~0=v_main_~i~0_501, main_~n~0=v_main_~n~0_38} OutVars{main_~i~0=v_main_~i~0_501, main_~n~0=v_main_~n~0_38} AuxVars[] AssignedVars[] [2021-05-01 07:10:31,663 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:31,664 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,668 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:31,670 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,671 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:31,672 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:31,675 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,678 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,680 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,682 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,684 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,685 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,687 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,690 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,691 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:31,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:31,705 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:31,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:31,750 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:10:31,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:31,755 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:10:31,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:31,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:10:31,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:10:31,779 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:10:31,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:10:31,811 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:10:31,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:10:31,863 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:10:31,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:10:31,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:31,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:31,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:31,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:31,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:31,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:31,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:10:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:31,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:31,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:10:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:31,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:10:31,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:31,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:32,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,019 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:10:32,049 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,049 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:32,066 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,067 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:32,085 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,086 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:32,105 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,106 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:32,126 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,127 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:32,148 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:32,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,171 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:32,200 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,201 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:32,226 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,226 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:32,252 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:32,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,279 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:32,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,312 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:32,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,346 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:32,381 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,381 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:32,411 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:32,412 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:32,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,444 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:32,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,483 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:32,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,521 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:32,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,561 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:32,611 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 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 12 [2021-05-01 07:10:32,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,647 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:32,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,690 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:32,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:32,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:32,732 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:32,732 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318709417] [2021-05-01 07:10:32,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [318709417] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:32,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:32,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2021-05-01 07:10:32,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161687309] [2021-05-01 07:10:32,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-01 07:10:32,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:32,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-01 07:10:32,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 07:10:32,733 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:34,795 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2021-05-01 07:10:34,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-01 07:10:34,802 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2021-05-01 07:10:34,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:34,802 INFO L225 Difference]: With dead ends: 88 [2021-05-01 07:10:34,802 INFO L226 Difference]: Without dead ends: 64 [2021-05-01 07:10:34,803 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 2339.8ms TimeCoverageRelationStatistics Valid=414, Invalid=4416, Unknown=0, NotChecked=0, Total=4830 [2021-05-01 07:10:34,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-05-01 07:10:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-05-01 07:10:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 56 states have internal predecessors, (67), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2021-05-01 07:10:34,812 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 51 [2021-05-01 07:10:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:34,815 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2021-05-01 07:10:34,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:34,815 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2021-05-01 07:10:34,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-01 07:10:34,816 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:34,816 INFO L519 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:34,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-01 07:10:34,816 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:34,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1688254118, now seen corresponding path program 18 times [2021-05-01 07:10:34,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:34,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071177415] [2021-05-01 07:10:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:34,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:34,823 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_527 v_main_~n~0_39) InVars {main_~i~0=v_main_~i~0_527, main_~n~0=v_main_~n~0_39} OutVars{main_~i~0=v_main_~i~0_527, main_~n~0=v_main_~n~0_39} AuxVars[] AssignedVars[] [2021-05-01 07:10:34,838 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:34,841 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,843 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,859 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,861 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,864 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,865 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,869 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:34,872 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,873 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:34,876 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,879 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,882 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,884 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:34,887 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,901 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:34,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:34,922 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:34,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:34,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:34,956 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:10:34,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:34,963 INFO L142 QuantifierPusher]: treesize reduction 20, result has 48.7 percent of original size [2021-05-01 07:10:34,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:10:34,982 INFO L142 QuantifierPusher]: treesize reduction 20, result has 53.5 percent of original size [2021-05-01 07:10:34,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:10:35,020 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:10:35,021 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:35,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:35,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:35,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:35,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:35,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:35,080 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 07:10:35,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:35,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,147 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:10:35,177 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:35,178 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:35,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,198 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:35,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,224 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,253 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,281 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:35,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:35,310 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:35,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,335 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,367 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:35,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,400 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:35,432 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:35,433 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 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,498 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,536 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,573 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,612 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:35,654 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:35,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:35,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,693 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,738 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:35,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,786 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:35,833 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:35,834 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:35,874 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:35,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:35,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:35,919 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:35,966 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:35,967 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:36,013 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:36,014 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:36,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,057 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:36,112 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:36,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:36,158 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 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:36,214 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:36,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:36,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,271 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:36,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,327 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:36,386 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:36,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:36,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,441 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:36,501 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:36,501 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:36,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,558 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:36,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:36,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:36,622 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:36,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071177415] [2021-05-01 07:10:36,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1071177415] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:36,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:36,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2021-05-01 07:10:36,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144647652] [2021-05-01 07:10:36,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-01 07:10:36,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:36,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-01 07:10:36,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2021-05-01 07:10:36,623 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 42 states have internal predecessors, (45), 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 07:10:43,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:43,033 INFO L93 Difference]: Finished difference Result 118 states and 143 transitions. [2021-05-01 07:10:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-01 07:10:43,034 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 42 states have internal predecessors, (45), 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 49 [2021-05-01 07:10:43,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:43,035 INFO L225 Difference]: With dead ends: 118 [2021-05-01 07:10:43,035 INFO L226 Difference]: Without dead ends: 116 [2021-05-01 07:10:43,036 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2282 ImplicationChecksByTransitivity, 5686.0ms TimeCoverageRelationStatistics Valid=750, Invalid=11022, Unknown=0, NotChecked=0, Total=11772 [2021-05-01 07:10:43,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-01 07:10:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 66. [2021-05-01 07:10:43,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 58 states have internal predecessors, (71), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:43,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2021-05-01 07:10:43,059 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 49 [2021-05-01 07:10:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:43,059 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2021-05-01 07:10:43,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 42 states have internal predecessors, (45), 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 07:10:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2021-05-01 07:10:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-01 07:10:43,069 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:43,069 INFO L519 BasicCegarLoop]: trace histogram [25, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:43,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-01 07:10:43,069 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:43,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:43,069 INFO L82 PathProgramCache]: Analyzing trace with hash 26163398, now seen corresponding path program 13 times [2021-05-01 07:10:43,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:43,070 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305033777] [2021-05-01 07:10:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:43,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:43,075 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_565 v_main_~n~0_40) InVars {main_~i~0=v_main_~i~0_565, main_~n~0=v_main_~n~0_40} OutVars{main_~i~0=v_main_~i~0_565, main_~n~0=v_main_~n~0_40} AuxVars[] AssignedVars[] [2021-05-01 07:10:43,076 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:43,079 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,092 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,095 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,098 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,100 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,101 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,105 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,109 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:43,110 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:43,112 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:43,116 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,120 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,123 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,126 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,127 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:43,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:43,149 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:43,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,162 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:10:43,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:43,168 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:10:43,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:43,180 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:10:43,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:10:43,203 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:10:43,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:10:43,268 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:10:43,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:10:43,340 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:10:43,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:10:43,411 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:10:43,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:43,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:43,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:43,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:43,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:10:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:43,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:10:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:43,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:10:43,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:43,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,544 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:10:43,587 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:43,588 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:43,612 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:43,613 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:43,637 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:43,638 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:43,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,663 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:43,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,705 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:43,741 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:43,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:43,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,772 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:43,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,811 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:43,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,852 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:43,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,893 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:43,935 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:43,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:43,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:43,973 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:44,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,018 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:44,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,063 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:44,112 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:44,113 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:44,153 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:44,154 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:44,195 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:44,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:44,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,239 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:44,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,290 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:44,341 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:44,341 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:44,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,388 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:44,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,442 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:44,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,498 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:44,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,557 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:44,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:44,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:44,616 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:44,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305033777] [2021-05-01 07:10:44,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [305033777] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:44,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:44,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-05-01 07:10:44,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004374960] [2021-05-01 07:10:44,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-01 07:10:44,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:44,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-01 07:10:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2021-05-01 07:10:44,618 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 35 states have internal predecessors, (42), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:47,021 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2021-05-01 07:10:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-01 07:10:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 35 states have internal predecessors, (42), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 53 [2021-05-01 07:10:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:47,022 INFO L225 Difference]: With dead ends: 90 [2021-05-01 07:10:47,022 INFO L226 Difference]: Without dead ends: 66 [2021-05-01 07:10:47,023 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 2981.1ms TimeCoverageRelationStatistics Valid=379, Invalid=4877, Unknown=0, NotChecked=0, Total=5256 [2021-05-01 07:10:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-05-01 07:10:47,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2021-05-01 07:10:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:47,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2021-05-01 07:10:47,033 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 53 [2021-05-01 07:10:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:47,033 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2021-05-01 07:10:47,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 35 states have internal predecessors, (42), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:10:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2021-05-01 07:10:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-01 07:10:47,033 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:47,033 INFO L519 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:47,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-01 07:10:47,034 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:47,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:47,034 INFO L82 PathProgramCache]: Analyzing trace with hash -170864602, now seen corresponding path program 19 times [2021-05-01 07:10:47,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:47,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999977213] [2021-05-01 07:10:47,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:47,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:47,058 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_593 v_main_~n~0_41) InVars {main_~i~0=v_main_~i~0_593, main_~n~0=v_main_~n~0_41} OutVars{main_~i~0=v_main_~i~0_593, main_~n~0=v_main_~n~0_41} AuxVars[] AssignedVars[] [2021-05-01 07:10:47,060 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:47,061 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,064 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,067 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:47,067 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:47,069 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:47,072 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,075 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,077 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,080 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,082 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,084 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,086 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,088 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,089 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,090 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:47,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:47,119 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:47,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:47,131 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:10:47,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:47,137 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:10:47,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:47,147 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:10:47,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:10:47,173 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:10:47,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:47,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:47,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:47,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:47,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:47,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:47,221 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 07:10:47,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:47,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,299 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:10:47,325 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,326 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:47,340 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:47,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,356 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:47,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,377 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:47,399 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,399 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:47,417 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:47,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,436 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:47,468 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:47,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,490 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:47,516 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,517 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:47,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,540 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:47,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,569 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:47,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,598 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:47,629 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:47,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,656 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:47,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,690 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:47,724 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,724 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:47,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,754 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:47,792 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:47,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,829 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:47,872 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:47,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:47,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,911 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:47,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:47,956 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:48,003 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:48,003 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:48,046 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:48,047 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:48,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,089 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:48,139 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:48,140 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:48,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,185 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:48,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,236 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:48,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,291 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:48,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,347 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:48,405 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:48,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:48,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,460 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:48,525 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:48,526 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:48,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,582 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:48,648 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:48,649 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:48,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:48,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:48,707 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:48,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999977213] [2021-05-01 07:10:48,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1999977213] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:48,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:48,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [] total 46 [2021-05-01 07:10:48,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775353624] [2021-05-01 07:10:48,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-01 07:10:48,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:48,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-01 07:10:48,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1994, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 07:10:48,708 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 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 07:10:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:10:55,968 INFO L93 Difference]: Finished difference Result 120 states and 145 transitions. [2021-05-01 07:10:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-01 07:10:55,969 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 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 51 [2021-05-01 07:10:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:10:55,970 INFO L225 Difference]: With dead ends: 120 [2021-05-01 07:10:55,970 INFO L226 Difference]: Without dead ends: 118 [2021-05-01 07:10:55,970 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2427 ImplicationChecksByTransitivity, 5904.5ms TimeCoverageRelationStatistics Valid=774, Invalid=11882, Unknown=0, NotChecked=0, Total=12656 [2021-05-01 07:10:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-05-01 07:10:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 68. [2021-05-01 07:10:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 60 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:10:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-05-01 07:10:55,992 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 51 [2021-05-01 07:10:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:10:55,992 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-05-01 07:10:55,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 44 states have internal predecessors, (47), 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 07:10:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-05-01 07:10:55,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 07:10:55,992 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:10:55,992 INFO L519 BasicCegarLoop]: trace histogram [27, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:10:55,993 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-05-01 07:10:55,993 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:10:55,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:10:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash -501837242, now seen corresponding path program 14 times [2021-05-01 07:10:55,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:10:55,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689785873] [2021-05-01 07:10:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:10:55,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:55,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:55,999 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_633 v_main_~n~0_42) InVars {main_~i~0=v_main_~i~0_633, main_~n~0=v_main_~n~0_42} OutVars{main_~i~0=v_main_~i~0_633, main_~n~0=v_main_~n~0_42} AuxVars[] AssignedVars[] [2021-05-01 07:10:56,001 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:10:56,002 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,005 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,009 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:56,010 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:10:56,013 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:10:56,017 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,021 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,024 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,028 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,032 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,034 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,037 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,040 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,043 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,044 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:10:56,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:10:56,069 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:10:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:56,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:56,083 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:10:56,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:10:56,092 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:10:56,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:10:56,105 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:10:56,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:10:56,128 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:10:56,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:10:56,201 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:10:56,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:10:56,280 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:10:56,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:10:56,357 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:10:56,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:10:56,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:56,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:10:56,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:56,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:10:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:56,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:56,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:10:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:56,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:56,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:10:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:10:56,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:10:56,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:10:56,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,505 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:10:56,549 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:56,550 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:56,572 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:56,573 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:56,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,597 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:56,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,629 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:56,665 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:56,666 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:56,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,696 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:56,731 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:56,732 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:10:56,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,761 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:56,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,801 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:10:56,843 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:56,844 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:56,878 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:56,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:56,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,914 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:56,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:56,960 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:10:57,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,009 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:57,059 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,060 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:57,103 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,104 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:57,157 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,158 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:57,204 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,205 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:57,250 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:57,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,296 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:10:57,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,355 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:57,411 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,411 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:57,463 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,464 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:10:57,518 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,519 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:10:57,571 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:10:57,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:10:57,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,629 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:10:57,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:10:57,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:10:57,692 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:10:57,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689785873] [2021-05-01 07:10:57,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [689785873] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:10:57,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:10:57,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2021-05-01 07:10:57,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791053400] [2021-05-01 07:10:57,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-01 07:10:57,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:10:57,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-01 07:10:57,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1423, Unknown=0, NotChecked=0, Total=1560 [2021-05-01 07:10:57,693 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 37 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:00,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:00,924 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2021-05-01 07:11:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-01 07:11:00,925 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 37 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2021-05-01 07:11:00,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:00,925 INFO L225 Difference]: With dead ends: 92 [2021-05-01 07:11:00,925 INFO L226 Difference]: Without dead ends: 68 [2021-05-01 07:11:00,926 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 3569.2ms TimeCoverageRelationStatistics Valid=401, Invalid=5451, Unknown=0, NotChecked=0, Total=5852 [2021-05-01 07:11:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-05-01 07:11:00,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-05-01 07:11:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 60 states have internal predecessors, (71), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:11:00,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2021-05-01 07:11:00,936 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 55 [2021-05-01 07:11:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:00,936 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2021-05-01 07:11:00,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 37 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:00,936 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2021-05-01 07:11:00,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-01 07:11:00,937 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:00,937 INFO L519 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:00,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-05-01 07:11:00,937 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash -77559386, now seen corresponding path program 20 times [2021-05-01 07:11:00,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:00,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840205247] [2021-05-01 07:11:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:00,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:00,943 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_663 v_main_~n~0_43) InVars {main_~i~0=v_main_~i~0_663, main_~n~0=v_main_~n~0_43} OutVars{main_~i~0=v_main_~i~0_663, main_~n~0=v_main_~n~0_43} AuxVars[] AssignedVars[] [2021-05-01 07:11:00,944 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:11:00,945 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,949 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,953 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:00,954 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:11:00,957 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:00,960 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,963 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,966 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,971 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,974 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,976 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,979 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,982 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,984 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:00,985 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:11:01,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:11:01,010 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:01,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:01,020 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:11:01,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:01,027 INFO L142 QuantifierPusher]: treesize reduction 20, result has 48.7 percent of original size [2021-05-01 07:11:01,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:11:01,044 INFO L142 QuantifierPusher]: treesize reduction 20, result has 53.5 percent of original size [2021-05-01 07:11:01,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:11:01,068 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:11:01,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:01,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:01,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:01,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:01,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:01,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:01,119 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 07:11:01,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:11:01,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,194 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:11:01,230 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,231 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:01,252 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,253 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:01,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,277 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:01,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:01,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,334 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:01,367 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,368 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:01,396 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,397 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:01,428 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,429 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:01,466 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,467 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:01,498 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,499 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:01,529 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,530 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:01,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,567 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:01,613 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,614 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:01,654 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,655 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:01,696 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,697 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:01,742 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:01,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,789 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:01,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,844 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:01,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:01,898 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:01,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,937 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:01,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:01,991 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:02,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,048 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:02,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,103 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:02,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,161 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:02,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,221 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:02,283 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:02,284 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:02,336 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:02,337 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:02,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,399 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:02,469 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:02,470 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:02,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,529 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:02,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,601 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:02,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,678 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:02,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,755 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:02,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,831 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:02,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:02,908 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:02,987 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:02,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:03,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,059 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:03,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,140 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:03,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:03,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:03,229 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:03,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840205247] [2021-05-01 07:11:03,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1840205247] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:03,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:03,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2021-05-01 07:11:03,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980931631] [2021-05-01 07:11:03,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-01 07:11:03,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-01 07:11:03,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2176, Unknown=0, NotChecked=0, Total=2352 [2021-05-01 07:11:03,230 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 46 states have internal predecessors, (49), 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 07:11:09,166 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 07:11:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:11,697 INFO L93 Difference]: Finished difference Result 122 states and 147 transitions. [2021-05-01 07:11:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-01 07:11:11,699 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 46 states have internal predecessors, (49), 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 53 [2021-05-01 07:11:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:11,699 INFO L225 Difference]: With dead ends: 122 [2021-05-01 07:11:11,699 INFO L226 Difference]: Without dead ends: 120 [2021-05-01 07:11:11,700 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2576 ImplicationChecksByTransitivity, 7452.7ms TimeCoverageRelationStatistics Valid=798, Invalid=12774, Unknown=0, NotChecked=0, Total=13572 [2021-05-01 07:11:11,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-05-01 07:11:11,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 70. [2021-05-01 07:11:11,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 62 states have internal predecessors, (75), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:11:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2021-05-01 07:11:11,711 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 53 [2021-05-01 07:11:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:11,711 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2021-05-01 07:11:11,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 46 states have internal predecessors, (49), 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 07:11:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2021-05-01 07:11:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-01 07:11:11,712 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:11,712 INFO L519 BasicCegarLoop]: trace histogram [29, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:11,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-05-01 07:11:11,712 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:11,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:11,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1104311354, now seen corresponding path program 15 times [2021-05-01 07:11:11,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:11,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422797268] [2021-05-01 07:11:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:11,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:11,718 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_705 v_main_~n~0_44) InVars {main_~i~0=v_main_~i~0_705, main_~n~0=v_main_~n~0_44} OutVars{main_~i~0=v_main_~i~0_705, main_~n~0=v_main_~n~0_44} AuxVars[] AssignedVars[] [2021-05-01 07:11:11,720 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:11:11,723 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,730 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,732 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,736 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,741 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:11,745 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,745 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:11:11,749 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,752 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,755 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:11,758 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,762 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,763 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:11:11,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:11:11,786 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:11,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:11,799 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:11:11,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:11,805 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:11:11,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:11:11,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:11,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:11,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:11,842 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:11:11,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:11:11,895 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:11:11,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:11:11,968 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:11:11,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:11:12,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:12,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:12,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:12,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:12,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:12,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:11:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:12,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:11:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:12,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:11:12,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:11:12,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,211 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:11:12,255 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,256 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:12,284 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,285 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:12,314 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,315 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:12,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,343 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:12,384 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:12,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,417 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:12,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,457 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:12,501 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,502 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:12,538 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:12,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,586 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:12,625 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:12,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,661 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:12,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,702 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:12,748 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,748 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:12,785 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,785 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:12,827 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,827 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:12,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,868 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:12,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:12,917 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:12,967 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:12,968 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:13,014 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:13,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:13,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,060 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:13,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,116 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:13,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,185 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:13,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,251 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:13,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:13,317 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:13,390 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:13,391 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:13,454 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:13,455 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:13,523 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:13,524 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [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 1 [2021-05-01 07:11:13,589 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:13,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422797268] [2021-05-01 07:11:13,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [422797268] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:13,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:13,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2021-05-01 07:11:13,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25064074] [2021-05-01 07:11:13,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-01 07:11:13,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:13,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-01 07:11:13,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 07:11:13,591 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 39 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:17,363 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2021-05-01 07:11:17,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-01 07:11:17,364 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 1.15) internal successors, (46), 39 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2021-05-01 07:11:17,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:17,365 INFO L225 Difference]: With dead ends: 94 [2021-05-01 07:11:17,365 INFO L226 Difference]: Without dead ends: 70 [2021-05-01 07:11:17,365 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 4105.8ms TimeCoverageRelationStatistics Valid=492, Invalid=6150, Unknown=0, NotChecked=0, Total=6642 [2021-05-01 07:11:17,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-05-01 07:11:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-05-01 07:11:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 62 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:11:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2021-05-01 07:11:17,376 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 57 [2021-05-01 07:11:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:17,376 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2021-05-01 07:11:17,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 40 states have (on average 1.15) internal successors, (46), 39 states have internal predecessors, (46), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2021-05-01 07:11:17,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-01 07:11:17,377 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:17,377 INFO L519 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:17,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-05-01 07:11:17,377 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:17,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:17,377 INFO L82 PathProgramCache]: Analyzing trace with hash -605560026, now seen corresponding path program 21 times [2021-05-01 07:11:17,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:17,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594829990] [2021-05-01 07:11:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:17,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:17,381 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_737 v_main_~n~0_45) InVars {main_~i~0=v_main_~i~0_737, main_~n~0=v_main_~n~0_45} OutVars{main_~i~0=v_main_~i~0_737, main_~n~0=v_main_~n~0_45} AuxVars[] AssignedVars[] [2021-05-01 07:11:17,405 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:11:17,408 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,410 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,412 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,414 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,416 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,416 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,420 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:17,422 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,422 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:11:17,424 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:17,427 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,429 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,431 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,433 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,433 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:11:17,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:11:17,461 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:17,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:17,476 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:11:17,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:17,481 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:11:17,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:11:17,492 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:11:17,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:11:17,507 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:11:17,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:17,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:17,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:17,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:17,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:17,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:17,545 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 07:11:17,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:11:17,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,600 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:11:17,627 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:17,628 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:17,643 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:17,643 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:17,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,659 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:17,681 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:17,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:17,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,700 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:17,725 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:17,725 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:17,746 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:17,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:17,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,768 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:17,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,797 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:17,826 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:17,827 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:17,853 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:17,854 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:17,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,886 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:17,928 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:17,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:17,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:17,962 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:18,007 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:18,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:18,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,044 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:18,093 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:18,094 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:18,131 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:18,131 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:18,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,190 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:18,238 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:18,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:18,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,292 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:18,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,353 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:18,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,416 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:18,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,481 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:18,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,549 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:18,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,620 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:18,694 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:18,695 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:18,763 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:18,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:18,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,827 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:18,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,907 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:18,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:18,980 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:19,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,062 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:19,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,140 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:19,226 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:19,227 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:19,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,298 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:19,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,387 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:19,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,466 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:19,547 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:19,548 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:19,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,617 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:19,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,699 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:19,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:19,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:19,789 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:19,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594829990] [2021-05-01 07:11:19,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1594829990] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:19,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:19,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [50] imperfect sequences [] total 50 [2021-05-01 07:11:19,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382088133] [2021-05-01 07:11:19,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-01 07:11:19,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-01 07:11:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2366, Unknown=0, NotChecked=0, Total=2550 [2021-05-01 07:11:19,790 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 48 states have internal predecessors, (51), 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 07:11:29,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:29,809 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2021-05-01 07:11:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-01 07:11:29,811 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 48 states have internal predecessors, (51), 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 55 [2021-05-01 07:11:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:29,812 INFO L225 Difference]: With dead ends: 124 [2021-05-01 07:11:29,812 INFO L226 Difference]: Without dead ends: 122 [2021-05-01 07:11:29,812 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2729 ImplicationChecksByTransitivity, 8263.1ms TimeCoverageRelationStatistics Valid=822, Invalid=13698, Unknown=0, NotChecked=0, Total=14520 [2021-05-01 07:11:29,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-01 07:11:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 72. [2021-05-01 07:11:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 64 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:11:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2021-05-01 07:11:29,824 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 55 [2021-05-01 07:11:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:29,825 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2021-05-01 07:11:29,825 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 48 states have internal predecessors, (51), 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 07:11:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2021-05-01 07:11:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-01 07:11:29,825 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:29,825 INFO L519 BasicCegarLoop]: trace histogram [31, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:29,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-05-01 07:11:29,825 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:29,826 INFO L82 PathProgramCache]: Analyzing trace with hash -261348026, now seen corresponding path program 16 times [2021-05-01 07:11:29,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:29,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028592403] [2021-05-01 07:11:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:29,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:29,832 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_781 v_main_~n~0_46) InVars {main_~i~0=v_main_~i~0_781, main_~n~0=v_main_~n~0_46} OutVars{main_~i~0=v_main_~i~0_781, main_~n~0=v_main_~n~0_46} AuxVars[] AssignedVars[] [2021-05-01 07:11:29,834 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:11:29,835 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,840 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:29,842 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,843 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:11:29,846 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,848 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,852 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:29,855 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,861 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,864 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,867 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,871 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,874 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,877 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,878 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:11:29,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:11:29,914 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:29,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:29,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:29,929 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:11:29,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:29,937 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:11:29,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:11:29,954 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:11:29,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:11:29,983 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:11:29,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:11:30,078 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:11:30,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:11:30,176 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:11:30,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:11:30,275 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:11:30,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:30,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:30,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:30,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:30,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:30,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:30,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:11:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:30,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:30,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:11:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:30,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:11:30,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:11:30,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,417 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:11:30,448 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:30,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,466 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:30,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,490 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:30,541 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,542 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:30,562 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,563 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:30,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,584 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:30,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,612 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:30,640 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:30,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,665 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:30,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,696 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:30,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,728 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:30,761 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,761 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:30,789 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,790 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:30,819 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,819 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:30,849 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,850 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:30,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,881 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:30,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,918 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:30,957 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:30,958 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:30,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:30,992 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:31,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:31,032 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:31,074 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:31,075 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:31,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:31,112 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:31,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:31,155 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:31,200 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:31,200 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:31,240 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:31,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:31,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:31,293 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:31,341 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:31,342 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:31,384 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:31,385 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:31,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:31,429 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:31,480 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:31,481 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:31,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:31,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:31,528 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:31,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028592403] [2021-05-01 07:11:31,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2028592403] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:31,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:31,528 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2021-05-01 07:11:31,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917834184] [2021-05-01 07:11:31,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-01 07:11:31,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:31,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-01 07:11:31,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1739, Unknown=0, NotChecked=0, Total=1892 [2021-05-01 07:11:31,530 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 41 states have internal predecessors, (48), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:35,715 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2021-05-01 07:11:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-01 07:11:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 41 states have internal predecessors, (48), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2021-05-01 07:11:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:35,717 INFO L225 Difference]: With dead ends: 96 [2021-05-01 07:11:35,717 INFO L226 Difference]: Without dead ends: 72 [2021-05-01 07:11:35,717 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 4014.1ms TimeCoverageRelationStatistics Valid=445, Invalid=6695, Unknown=0, NotChecked=0, Total=7140 [2021-05-01 07:11:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-01 07:11:35,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-05-01 07:11:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:11:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2021-05-01 07:11:35,729 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 59 [2021-05-01 07:11:35,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:35,729 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2021-05-01 07:11:35,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 41 states have internal predecessors, (48), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2021-05-01 07:11:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-01 07:11:35,730 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:35,730 INFO L519 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:35,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-05-01 07:11:35,730 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:35,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1208034138, now seen corresponding path program 22 times [2021-05-01 07:11:35,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:35,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173312553] [2021-05-01 07:11:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:35,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:35,736 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_815 v_main_~n~0_47) InVars {main_~i~0=v_main_~i~0_815, main_~n~0=v_main_~n~0_47} OutVars{main_~i~0=v_main_~i~0_815, main_~n~0=v_main_~n~0_47} AuxVars[] AssignedVars[] [2021-05-01 07:11:35,738 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:11:35,742 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,745 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,749 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,752 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,755 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,756 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,761 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 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 07:11:35,766 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:11:35,770 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 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 07:11:35,777 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,780 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,783 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,784 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:11:35,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:11:35,815 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:35,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:35,825 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:11:35,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:35,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:11:35,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:35,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:35,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:35,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:35,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:35,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:35,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:35,945 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 07:11:35,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:35,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:11:36,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,045 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:11:36,093 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,094 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:36,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,120 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:36,156 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:36,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,189 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:36,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,233 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:36,275 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,276 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:36,311 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,312 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:36,347 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,349 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:36,392 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,393 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:36,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,435 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:36,488 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,489 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:36,533 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,534 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:36,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,579 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:36,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,631 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:36,690 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,691 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:36,743 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,744 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:36,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,793 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:36,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:36,854 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:36,914 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,920 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:36,966 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:36,966 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:37,013 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,014 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:37,068 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,068 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:37,120 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:37,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:37,171 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:37,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:37,236 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:37,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:37,300 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:37,363 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,364 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:37,425 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,426 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:37,485 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,486 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:37,545 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,546 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:37,614 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,614 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:37,675 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,676 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:37,743 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:37,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:37,814 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:37,888 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,889 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:37,964 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:37,965 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:38,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:38,032 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:38,117 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:38,118 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:38,191 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:38,191 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:38,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:38,268 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:38,359 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:38,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:38,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:38,440 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:38,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:38,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:38,534 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:38,535 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173312553] [2021-05-01 07:11:38,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [173312553] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:38,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:38,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [52] imperfect sequences [] total 52 [2021-05-01 07:11:38,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308125182] [2021-05-01 07:11:38,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-01 07:11:38,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:38,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-01 07:11:38,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=2621, Unknown=0, NotChecked=0, Total=2862 [2021-05-01 07:11:38,536 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 states have internal predecessors, (53), 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 07:11:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:49,133 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2021-05-01 07:11:49,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-01 07:11:49,134 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 states have internal predecessors, (53), 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 57 [2021-05-01 07:11:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:49,135 INFO L225 Difference]: With dead ends: 126 [2021-05-01 07:11:49,135 INFO L226 Difference]: Without dead ends: 124 [2021-05-01 07:11:49,136 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 9227.2ms TimeCoverageRelationStatistics Valid=963, Invalid=14787, Unknown=0, NotChecked=0, Total=15750 [2021-05-01 07:11:49,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-05-01 07:11:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 74. [2021-05-01 07:11:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 66 states have internal predecessors, (79), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:11:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2021-05-01 07:11:49,149 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 57 [2021-05-01 07:11:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:49,149 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2021-05-01 07:11:49,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 50 states have internal predecessors, (53), 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 07:11:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2021-05-01 07:11:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-01 07:11:49,150 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:49,150 INFO L519 BasicCegarLoop]: trace histogram [33, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:49,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-05-01 07:11:49,150 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1922408762, now seen corresponding path program 17 times [2021-05-01 07:11:49,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:49,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267845954] [2021-05-01 07:11:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:49,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:49,172 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_861 v_main_~n~0_48) InVars {main_~i~0=v_main_~i~0_861, main_~n~0=v_main_~n~0_48} OutVars{main_~i~0=v_main_~i~0_861, main_~n~0=v_main_~n~0_48} AuxVars[] AssignedVars[] [2021-05-01 07:11:49,174 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:11:49,175 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,179 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:49,183 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,183 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:11:49,187 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:49,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,193 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,197 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,202 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,205 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,207 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,210 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,216 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,216 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:11:49,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:11:49,249 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:49,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:49,287 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:11:49,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:49,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:11:49,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:49,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:49,344 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:11:49,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:11:49,407 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:11:49,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:11:49,530 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:11:49,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:11:49,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:49,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:49,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:49,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:49,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:49,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:11:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:49,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:11:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:49,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:11:49,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:11:49,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:49,945 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:11:49,992 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:49,992 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:50,023 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,024 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:50,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,051 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:50,091 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,092 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:50,122 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:50,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,157 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:50,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,196 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:50,238 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,239 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:50,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,276 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:50,323 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,324 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:50,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,363 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:50,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,413 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:50,464 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:50,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,509 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:50,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,562 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:50,617 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,618 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:50,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,666 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:50,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,724 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:50,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,783 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:50,842 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,843 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:50,888 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:50,889 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:50,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:50,946 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:51,018 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:51,018 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:51,080 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:51,081 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:51,145 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:51,146 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:51,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,208 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:51,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,296 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:51,374 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:51,375 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:51,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,444 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:51,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,518 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:51,600 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:51,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:51,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,674 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:51,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:51,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:51,761 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:51,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267845954] [2021-05-01 07:11:51,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [267845954] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:51,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:51,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2021-05-01 07:11:51,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749287954] [2021-05-01 07:11:51,761 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-01 07:11:51,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:51,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-01 07:11:51,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1962, Unknown=0, NotChecked=0, Total=2162 [2021-05-01 07:11:51,762 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 45 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 43 states have internal predecessors, (50), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:11:56,367 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-05-01 07:11:56,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-01 07:11:56,368 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 43 states have internal predecessors, (50), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 61 [2021-05-01 07:11:56,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:11:56,369 INFO L225 Difference]: With dead ends: 98 [2021-05-01 07:11:56,369 INFO L226 Difference]: Without dead ends: 74 [2021-05-01 07:11:56,369 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1425 ImplicationChecksByTransitivity, 5075.5ms TimeCoverageRelationStatistics Valid=544, Invalid=7466, Unknown=0, NotChecked=0, Total=8010 [2021-05-01 07:11:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-01 07:11:56,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-01 07:11:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:11:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2021-05-01 07:11:56,381 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 61 [2021-05-01 07:11:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:11:56,381 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2021-05-01 07:11:56,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 43 states have internal predecessors, (50), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:11:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2021-05-01 07:11:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-01 07:11:56,382 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:11:56,382 INFO L519 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:11:56,382 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-05-01 07:11:56,382 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:11:56,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:11:56,382 INFO L82 PathProgramCache]: Analyzing trace with hash -365070810, now seen corresponding path program 23 times [2021-05-01 07:11:56,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:11:56,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392388228] [2021-05-01 07:11:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:11:56,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:56,388 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_897 v_main_~n~0_49) InVars {main_~i~0=v_main_~i~0_897, main_~n~0=v_main_~n~0_49} OutVars{main_~i~0=v_main_~i~0_897, main_~n~0=v_main_~n~0_49} AuxVars[] AssignedVars[] [2021-05-01 07:11:56,389 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:11:56,390 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,394 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,399 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:56,400 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:11:56,404 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,408 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:11:56,411 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,414 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,422 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,425 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,428 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,431 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,434 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,435 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:11:56,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:11:56,461 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:11:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:56,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:56,472 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:11:56,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:11:56,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [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 0, result has 100.0 percent of original size 11 [2021-05-01 07:11:56,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:11:56,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:11:56,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:56,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:11:56,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:11:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:11:56,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:56,568 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 07:11:56,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:11:56,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,658 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:11:56,702 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:56,703 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:56,727 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:56,728 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:56,754 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:56,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:56,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,782 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:56,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,818 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:56,852 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:56,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:56,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,884 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:56,925 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:56,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:56,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:56,961 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:57,004 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:57,005 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:57,042 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:57,043 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:57,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,081 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:57,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,130 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:57,177 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:57,178 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:57,225 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:57,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:57,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,270 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:57,327 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:57,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:57,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,377 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:57,435 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:57,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:57,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,483 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:57,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,544 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:57,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,607 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:57,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,670 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:57,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,734 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:57,797 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:57,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:57,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,856 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:57,926 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:57,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:57,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:57,990 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:11:58,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:58,065 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:58,138 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:58,139 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:58,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:58,207 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:11:58,284 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:58,285 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:58,355 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:58,356 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:58,419 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:58,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:58,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:58,493 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:58,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:58,584 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:58,668 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:58,669 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:58,743 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:58,744 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:11:58,825 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:58,826 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:11:58,908 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:58,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:11:58,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:58,992 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:59,080 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:11:59,081 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:11:59,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:59,164 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:11:59,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:59,258 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:11:59,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:11:59,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:11:59,353 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:11:59,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392388228] [2021-05-01 07:11:59,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1392388228] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:11:59,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:11:59,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [] total 54 [2021-05-01 07:11:59,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231447654] [2021-05-01 07:11:59,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-01 07:11:59,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:11:59,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-01 07:11:59,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=2829, Unknown=0, NotChecked=0, Total=3080 [2021-05-01 07:11:59,354 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 52 states have internal predecessors, (55), 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 07:12:04,849 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 07:12:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:09,671 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2021-05-01 07:12:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-01 07:12:09,672 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 52 states have internal predecessors, (55), 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 59 [2021-05-01 07:12:09,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:09,673 INFO L225 Difference]: With dead ends: 128 [2021-05-01 07:12:09,673 INFO L226 Difference]: Without dead ends: 126 [2021-05-01 07:12:09,673 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3105 ImplicationChecksByTransitivity, 9155.3ms TimeCoverageRelationStatistics Valid=991, Invalid=15779, Unknown=0, NotChecked=0, Total=16770 [2021-05-01 07:12:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-05-01 07:12:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 76. [2021-05-01 07:12:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.208955223880597) internal successors, (81), 68 states have internal predecessors, (81), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:12:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2021-05-01 07:12:09,685 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 59 [2021-05-01 07:12:09,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:09,686 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2021-05-01 07:12:09,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 52 states have internal predecessors, (55), 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 07:12:09,686 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2021-05-01 07:12:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 07:12:09,686 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:09,686 INFO L519 BasicCegarLoop]: trace histogram [35, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:09,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-05-01 07:12:09,686 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:09,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:09,687 INFO L82 PathProgramCache]: Analyzing trace with hash -473941946, now seen corresponding path program 18 times [2021-05-01 07:12:09,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:09,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797407801] [2021-05-01 07:12:09,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:09,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:09,691 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_945 v_main_~n~0_50) InVars {main_~i~0=v_main_~i~0_945, main_~n~0=v_main_~n~0_50} OutVars{main_~i~0=v_main_~i~0_945, main_~n~0=v_main_~n~0_50} AuxVars[] AssignedVars[] [2021-05-01 07:12:09,693 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:12:09,693 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,697 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,700 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:09,701 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:12:09,703 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,707 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,710 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:09,713 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,717 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,719 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,721 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,724 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,730 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,730 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:12:09,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:12:09,755 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:09,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:09,779 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:12:09,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:09,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:12:09,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:09,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:12:09,882 INFO L142 QuantifierPusher]: treesize reduction 20, result has 88.3 percent of original size [2021-05-01 07:12:09,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-05-01 07:12:09,980 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.1 percent of original size [2021-05-01 07:12:09,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-05-01 07:12:10,103 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2021-05-01 07:12:10,106 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:12:10,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:12:10,218 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:12:10,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:10,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:10,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:10,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:10,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:10,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:10,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:12:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:10,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:10,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:12:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:10,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:12:10,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:12:10,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,423 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:12:10,486 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:10,487 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:10,518 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:10,519 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:10,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,549 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:10,604 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 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 12 [2021-05-01 07:12:10,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,643 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:10,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,694 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:10,742 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:10,742 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:10,782 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:10,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:10,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,825 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:10,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,882 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:10,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,941 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:10,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:10,996 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:11,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,046 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:11,112 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:11,112 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:11,168 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:11,169 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:11,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,222 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:11,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,288 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:11,366 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:11,367 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:11,427 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:11,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:11,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,490 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:11,574 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:11,576 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:11,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,641 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:11,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,716 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:11,812 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:11,813 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:11,891 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:11,892 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:11,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:11,978 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:12,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,076 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:12,175 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:12,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:12,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,268 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:12,368 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:12,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:12,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,468 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:12,578 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:12,579 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:12,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,684 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:12,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,796 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:12,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:12,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:12,912 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:12,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797407801] [2021-05-01 07:12:12,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1797407801] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:12,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:12,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2021-05-01 07:12:12,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163245990] [2021-05-01 07:12:12,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-01 07:12:12,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:12,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-01 07:12:12,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2087, Unknown=0, NotChecked=0, Total=2256 [2021-05-01 07:12:12,914 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 47 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:17,889 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2021-05-01 07:12:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:18,461 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2021-05-01 07:12:18,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-01 07:12:18,462 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 63 [2021-05-01 07:12:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:18,462 INFO L225 Difference]: With dead ends: 100 [2021-05-01 07:12:18,462 INFO L226 Difference]: Without dead ends: 76 [2021-05-01 07:12:18,463 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 6405.1ms TimeCoverageRelationStatistics Valid=489, Invalid=8067, Unknown=0, NotChecked=0, Total=8556 [2021-05-01 07:12:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-05-01 07:12:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-05-01 07:12:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:12:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2021-05-01 07:12:18,475 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 63 [2021-05-01 07:12:18,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:18,475 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2021-05-01 07:12:18,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 45 states have internal predecessors, (52), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:18,475 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2021-05-01 07:12:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-01 07:12:18,475 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:18,475 INFO L519 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:18,476 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-05-01 07:12:18,476 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:18,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:18,476 INFO L82 PathProgramCache]: Analyzing trace with hash -2026131546, now seen corresponding path program 24 times [2021-05-01 07:12:18,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:18,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824679237] [2021-05-01 07:12:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:18,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:18,487 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_983 v_main_~n~0_51) InVars {main_~i~0=v_main_~i~0_983, main_~n~0=v_main_~n~0_51} OutVars{main_~i~0=v_main_~i~0_983, main_~n~0=v_main_~n~0_51} AuxVars[] AssignedVars[] [2021-05-01 07:12:18,489 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:12:18,490 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,493 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,497 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:18,498 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:12:18,501 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,503 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:18,506 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,508 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,512 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,515 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,517 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,519 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,521 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,523 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,524 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:12:18,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:12:18,546 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:18,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:18,556 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:12:18,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:18,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:12:18,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:12:18,595 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:12:18,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:18,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:18,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:18,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:18,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:18,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:18,642 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 07:12:18,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:12:18,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,716 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:12:18,751 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:18,752 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:18,771 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:18,771 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:18,792 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:18,792 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:18,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,814 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:18,845 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:18,845 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:18,871 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:18,872 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:18,897 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:18,898 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:18,924 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:18,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:18,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:18,952 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:18,995 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:18,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:19,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,026 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:19,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,064 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:19,103 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,104 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:19,138 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,139 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:19,174 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,174 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:19,211 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:19,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,250 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:19,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,295 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:19,342 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,342 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:19,383 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:19,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,425 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:19,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,475 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:19,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,528 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:19,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,586 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:19,642 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,642 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:19,690 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:19,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,739 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:19,796 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,797 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:19,851 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:19,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:19,905 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:19,971 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:19,972 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:20,031 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:20,032 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:20,091 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:20,092 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:20,153 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:20,154 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:20,214 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:20,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:20,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:20,276 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:20,348 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:20,349 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:20,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:20,415 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:20,491 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:20,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:20,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:20,561 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:20,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:20,636 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:20,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:20,712 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:20,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:20,791 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:20,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:20,870 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:20,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:20,952 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:21,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,039 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:21,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:21,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:21,124 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:21,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824679237] [2021-05-01 07:12:21,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [824679237] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:21,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:21,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [] total 56 [2021-05-01 07:12:21,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801883155] [2021-05-01 07:12:21,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-01 07:12:21,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:21,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-01 07:12:21,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2984, Unknown=0, NotChecked=0, Total=3192 [2021-05-01 07:12:21,125 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 54 states have internal predecessors, (57), 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 07:12:27,371 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:12:27,607 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:12:28,194 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 07:12:28,424 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:12:29,003 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:12:29,236 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:12:29,781 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:12:30,513 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:12:31,332 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:12:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:32,424 INFO L93 Difference]: Finished difference Result 130 states and 155 transitions. [2021-05-01 07:12:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-01 07:12:32,426 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 54 states have internal predecessors, (57), 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 61 [2021-05-01 07:12:32,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:32,427 INFO L225 Difference]: With dead ends: 130 [2021-05-01 07:12:32,427 INFO L226 Difference]: Without dead ends: 128 [2021-05-01 07:12:32,428 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3212 ImplicationChecksByTransitivity, 9341.5ms TimeCoverageRelationStatistics Valid=894, Invalid=16662, Unknown=0, NotChecked=0, Total=17556 [2021-05-01 07:12:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-05-01 07:12:32,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2021-05-01 07:12:32,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 70 states have internal predecessors, (83), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:12:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2021-05-01 07:12:32,447 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 61 [2021-05-01 07:12:32,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:32,448 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2021-05-01 07:12:32,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 54 states have internal predecessors, (57), 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 07:12:32,448 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2021-05-01 07:12:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-01 07:12:32,448 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:32,448 INFO L519 BasicCegarLoop]: trace histogram [37, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:32,448 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-05-01 07:12:32,448 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:32,448 INFO L82 PathProgramCache]: Analyzing trace with hash -66735674, now seen corresponding path program 19 times [2021-05-01 07:12:32,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:32,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782790052] [2021-05-01 07:12:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:32,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:32,456 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1033 v_main_~n~0_52) InVars {main_~i~0=v_main_~i~0_1033, main_~n~0=v_main_~n~0_52} OutVars{main_~i~0=v_main_~i~0_1033, main_~n~0=v_main_~n~0_52} AuxVars[] AssignedVars[] [2021-05-01 07:12:32,458 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:12:32,460 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,465 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,471 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:32,473 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:12:32,477 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:32,482 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,487 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,492 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,502 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,506 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,510 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,518 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,522 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,524 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:12:32,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:12:32,567 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:32,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:32,580 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:12:32,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:32,593 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:12:32,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:12:32,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:12:32,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:32,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:12:32,655 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:12:32,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:12:32,740 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:12:32,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:12:32,870 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-05-01 07:12:32,873 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:12:32,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:12:33,008 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2021-05-01 07:12:33,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:33,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:33,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:33,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:33,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:33,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:33,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:12:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:33,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:33,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:12:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [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 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:12:33,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:12:33,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,285 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:12:33,369 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:33,370 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:33,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,415 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:33,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,474 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:33,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,537 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:33,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,603 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:33,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,670 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:33,740 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:33,741 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:33,801 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:33,802 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:33,872 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:33,874 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:33,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:33,939 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:34,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,019 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:34,101 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,102 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:34,176 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,177 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:34,252 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,253 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:34,328 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,329 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:34,411 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,413 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:34,495 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,497 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:34,584 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,586 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:34,675 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,677 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:34,767 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:34,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:34,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,861 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:34,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:34,969 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:35,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:35,081 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:35,191 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:35,193 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:35,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:35,286 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:35,410 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:35,412 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:35,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:35,525 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:35,643 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:35,645 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:35,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:35,756 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:35,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:35,877 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:36,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:36,011 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:36,139 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:36,141 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:36,265 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:36,266 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:36,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:36,388 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:36,525 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:36,526 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:36,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:36,647 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:36,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:36,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:36,788 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:36,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782790052] [2021-05-01 07:12:36,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1782790052] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:36,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:36,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2021-05-01 07:12:36,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551031722] [2021-05-01 07:12:36,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-01 07:12:36,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:36,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-01 07:12:36,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2330, Unknown=0, NotChecked=0, Total=2550 [2021-05-01 07:12:36,789 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 49 states, 48 states have (on average 1.125) internal successors, (54), 47 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:43,390 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:12:43,976 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2021-05-01 07:12:44,273 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:12:44,808 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:12:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:12:45,203 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2021-05-01 07:12:45,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-01 07:12:45,205 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.125) internal successors, (54), 47 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 65 [2021-05-01 07:12:45,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:12:45,206 INFO L225 Difference]: With dead ends: 102 [2021-05-01 07:12:45,206 INFO L226 Difference]: Without dead ends: 78 [2021-05-01 07:12:45,207 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1659 ImplicationChecksByTransitivity, 8918.4ms TimeCoverageRelationStatistics Valid=596, Invalid=8910, Unknown=0, NotChecked=0, Total=9506 [2021-05-01 07:12:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-01 07:12:45,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-05-01 07:12:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 1.173913043478261) internal successors, (81), 70 states have internal predecessors, (81), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:12:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-05-01 07:12:45,220 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 65 [2021-05-01 07:12:45,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:12:45,220 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-05-01 07:12:45,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 48 states have (on average 1.125) internal successors, (54), 47 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:12:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-05-01 07:12:45,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-01 07:12:45,221 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:12:45,221 INFO L519 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:12:45,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-05-01 07:12:45,221 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:12:45,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:12:45,221 INFO L82 PathProgramCache]: Analyzing trace with hash -577664730, now seen corresponding path program 25 times [2021-05-01 07:12:45,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:12:45,221 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248269257] [2021-05-01 07:12:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:12:45,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:45,229 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1073 v_main_~n~0_53) InVars {main_~i~0=v_main_~i~0_1073, main_~n~0=v_main_~n~0_53} OutVars{main_~i~0=v_main_~i~0_1073, main_~n~0=v_main_~n~0_53} AuxVars[] AssignedVars[] [2021-05-01 07:12:45,231 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:12:45,233 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,239 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:45,244 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,245 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:12:45,252 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,257 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,263 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,267 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:12:45,274 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,279 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,284 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,288 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,293 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,298 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,299 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:12:45,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:12:45,351 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:12:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:45,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:45,362 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:12:45,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:12:45,377 INFO L142 QuantifierPusher]: treesize reduction 12, result has 61.3 percent of original size [2021-05-01 07:12:45,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:12:45,420 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-05-01 07:12:45,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-05-01 07:12:45,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:12:45,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:45,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:12:45,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:45,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:12:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:12:45,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:45,571 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 07:12:45,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:12:45,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,734 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:12:45,794 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:45,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:45,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:45,846 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:45,906 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:45,908 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:45,955 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:45,956 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:45,999 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:46,001 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:46,048 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:46,050 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:46,099 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:46,101 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:46,159 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:46,160 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:46,219 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:46,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:46,279 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 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:46,358 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:46,359 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:46,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,428 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:46,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,503 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:46,586 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:46,588 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:46,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,662 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:46,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,745 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:46,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,836 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:46,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:46,926 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:47,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,017 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:47,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,114 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:47,203 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:47,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:47,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,293 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:47,395 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:47,396 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:47,483 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:47,485 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:47,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,580 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:47,683 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:47,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:47,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:47,785 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:47,899 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:47,901 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:48,008 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:48,010 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:48,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:48,118 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:48,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:48,236 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:48,362 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:48,364 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:48,475 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:48,477 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:48,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:48,594 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:48,718 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:48,719 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:48,840 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:48,841 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:48,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:48,959 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:49,099 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:49,100 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:12:49,224 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:49,225 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:12:49,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:49,356 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:49,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:49,501 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:49,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:49,656 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:12:49,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:49,806 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:49,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:49,965 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:12:50,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:50,118 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:12:50,279 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:50,280 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:12:50,433 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:12:50,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:12:50,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:50,590 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:12:50,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:12:50,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:12:50,765 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:12:50,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248269257] [2021-05-01 07:12:50,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [248269257] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:12:50,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:12:50,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [58] imperfect sequences [] total 58 [2021-05-01 07:12:50,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240406203] [2021-05-01 07:12:50,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-01 07:12:50,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:12:50,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-01 07:12:50,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3205, Unknown=0, NotChecked=0, Total=3422 [2021-05-01 07:12:50,767 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 56 states have internal predecessors, (59), 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 07:12:59,408 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:12:59,904 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2021-05-01 07:13:00,189 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:13:00,787 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2021-05-01 07:13:01,061 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:13:01,683 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2021-05-01 07:13:01,955 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:13:07,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:07,230 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2021-05-01 07:13:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-01 07:13:07,231 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 56 states have internal predecessors, (59), 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 63 [2021-05-01 07:13:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:07,232 INFO L225 Difference]: With dead ends: 132 [2021-05-01 07:13:07,232 INFO L226 Difference]: Without dead ends: 130 [2021-05-01 07:13:07,233 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 14514.5ms TimeCoverageRelationStatistics Valid=843, Invalid=17517, Unknown=0, NotChecked=0, Total=18360 [2021-05-01 07:13:07,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-05-01 07:13:07,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 80. [2021-05-01 07:13:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 72 states have internal predecessors, (85), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:13:07,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2021-05-01 07:13:07,249 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 63 [2021-05-01 07:13:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:07,249 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2021-05-01 07:13:07,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 56 states have internal predecessors, (59), 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 07:13:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2021-05-01 07:13:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-01 07:13:07,251 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:07,251 INFO L519 BasicCegarLoop]: trace histogram [39, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:07,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-05-01 07:13:07,251 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:07,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:07,252 INFO L82 PathProgramCache]: Analyzing trace with hash 416467782, now seen corresponding path program 20 times [2021-05-01 07:13:07,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:07,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324235602] [2021-05-01 07:13:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:07,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:07,261 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1125 v_main_~n~0_54) InVars {main_~i~0=v_main_~i~0_1125, main_~n~0=v_main_~n~0_54} OutVars{main_~i~0=v_main_~i~0_1125, main_~n~0=v_main_~n~0_54} AuxVars[] AssignedVars[] [2021-05-01 07:13:07,262 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:13:07,266 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,269 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,272 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,276 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,279 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,280 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,298 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:07,302 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,302 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:13:07,306 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,309 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,312 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:07,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,319 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,320 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:13:07,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:13:07,345 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:07,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:07,375 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:13:07,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:07,388 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:13:07,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:13:07,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:13:07,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:07,464 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:13:07,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:13:07,578 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:13:07,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:13:07,733 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-05-01 07:13:07,736 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:13:07,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:13:07,898 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2021-05-01 07:13:07,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:07,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:07,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:07,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:07,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:08,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:08,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:13:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:08,021 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:08,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:13:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:08,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:13:08,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:13:08,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,212 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:13:08,309 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:08,310 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:08,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,363 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:08,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,428 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:08,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,496 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:08,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,571 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:08,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,646 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:08,720 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:08,721 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:08,787 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:08,789 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:08,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,861 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:08,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:08,947 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:09,034 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:09,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,121 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:09,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,220 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:09,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,327 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:09,380 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,381 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:09,429 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,430 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:09,482 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,483 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:09,535 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:09,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,606 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:09,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:09,674 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:09,740 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,741 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:09,801 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,801 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:09,862 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,863 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:09,925 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,926 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:09,989 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:09,990 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:10,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,058 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:10,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,133 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:10,210 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:10,211 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:10,289 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:10,289 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:10,352 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:10,353 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:10,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,419 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:10,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,493 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:10,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,569 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:10,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,646 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:10,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,725 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:10,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,804 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:10,886 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:10,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:10,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:10,963 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:11,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:11,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:11,049 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:11,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324235602] [2021-05-01 07:13:11,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1324235602] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:11,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:11,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2021-05-01 07:13:11,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717398418] [2021-05-01 07:13:11,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-01 07:13:11,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:11,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-01 07:13:11,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2526, Unknown=0, NotChecked=0, Total=2756 [2021-05-01 07:13:11,050 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand has 51 states, 50 states have (on average 1.12) internal successors, (56), 49 states have internal predecessors, (56), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:17,765 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2021-05-01 07:13:18,047 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:13:18,431 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:13:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:18,671 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2021-05-01 07:13:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-01 07:13:18,673 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 1.12) internal successors, (56), 49 states have internal predecessors, (56), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 67 [2021-05-01 07:13:18,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:18,674 INFO L225 Difference]: With dead ends: 104 [2021-05-01 07:13:18,674 INFO L226 Difference]: Without dead ends: 80 [2021-05-01 07:13:18,675 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 8101.7ms TimeCoverageRelationStatistics Valid=622, Invalid=9680, Unknown=0, NotChecked=0, Total=10302 [2021-05-01 07:13:18,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-01 07:13:18,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-01 07:13:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 72 states have internal predecessors, (83), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:13:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2021-05-01 07:13:18,712 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 67 [2021-05-01 07:13:18,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:18,712 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2021-05-01 07:13:18,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 50 states have (on average 1.12) internal successors, (56), 49 states have internal predecessors, (56), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:18,712 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2021-05-01 07:13:18,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-01 07:13:18,712 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:18,712 INFO L519 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:18,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-05-01 07:13:18,712 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:18,713 INFO L82 PathProgramCache]: Analyzing trace with hash -170458458, now seen corresponding path program 26 times [2021-05-01 07:13:18,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:18,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794833929] [2021-05-01 07:13:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:18,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:18,721 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1167 v_main_~n~0_55) InVars {main_~i~0=v_main_~i~0_1167, main_~n~0=v_main_~n~0_55} OutVars{main_~i~0=v_main_~i~0_1167, main_~n~0=v_main_~n~0_55} AuxVars[] AssignedVars[] [2021-05-01 07:13:18,723 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:13:18,724 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,741 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:18,742 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:13:18,748 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:18,768 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,772 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,777 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,799 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,804 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,808 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,813 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,817 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,838 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,839 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:13:18,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:13:18,901 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:18,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:18,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:18,923 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:13:18,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:18,933 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-05-01 07:13:18,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:13:18,987 INFO L142 QuantifierPusher]: treesize reduction 12, result has 61.3 percent of original size [2021-05-01 07:13:18,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:13:19,058 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:13:19,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:19,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:19,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:19,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:19,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:19,163 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 07:13:19,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:13:19,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,299 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:13:19,368 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:19,370 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:19,409 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:19,411 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:19,441 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:19,443 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:19,485 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:19,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:19,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,529 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:19,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,589 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:19,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,652 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:19,718 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:19,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:19,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,774 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:19,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,832 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:19,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,902 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:19,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:19,978 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:20,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:20,053 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:20,129 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:20,130 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:20,189 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:20,190 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:20,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:20,256 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:20,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:20,335 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:20,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:20,427 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:20,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:20,512 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:20,602 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:20,603 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:20,682 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:20,684 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:20,765 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:20,766 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:20,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:20,848 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:20,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:20,945 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:21,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:21,045 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:21,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:21,148 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:21,241 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:21,242 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:21,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:21,335 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:21,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:21,448 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:21,569 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:21,569 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:21,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:21,668 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:21,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:21,788 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:21,919 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:21,920 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:22,028 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:22,031 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:22,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:22,145 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:22,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:22,283 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:22,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:22,418 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:22,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:22,559 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:22,697 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:22,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:22,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:22,815 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:22,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:22,952 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:23,098 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:23,099 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:23,235 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:23,236 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:23,372 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:23,374 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:23,512 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:23,513 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:23,655 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:23,656 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:23,805 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:23,807 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:23,947 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:23,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:24,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:24,104 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:24,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:24,268 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:24,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:24,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:24,428 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:24,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794833929] [2021-05-01 07:13:24,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [794833929] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:24,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:24,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [60] imperfect sequences [] total 60 [2021-05-01 07:13:24,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181743407] [2021-05-01 07:13:24,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-01 07:13:24,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:24,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-01 07:13:24,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3436, Unknown=0, NotChecked=0, Total=3660 [2021-05-01 07:13:24,429 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 58 states have internal predecessors, (61), 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 07:13:33,318 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:13:33,795 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:13:34,053 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:13:34,627 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:13:34,872 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:13:36,223 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:13:36,491 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:13:37,242 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:13:37,571 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:13:38,306 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:13:38,623 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:13:39,428 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:13:39,765 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:13:40,649 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:13:40,963 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:13:41,694 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:13:42,009 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:13:42,775 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 07:13:43,038 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:13:43,896 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:13:44,301 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-05-01 07:13:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:13:45,567 INFO L93 Difference]: Finished difference Result 134 states and 159 transitions. [2021-05-01 07:13:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-01 07:13:45,570 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 58 states have internal predecessors, (61), 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 65 [2021-05-01 07:13:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:13:45,571 INFO L225 Difference]: With dead ends: 134 [2021-05-01 07:13:45,571 INFO L226 Difference]: Without dead ends: 132 [2021-05-01 07:13:45,572 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3554 ImplicationChecksByTransitivity, 17397.1ms TimeCoverageRelationStatistics Valid=942, Invalid=18798, Unknown=0, NotChecked=0, Total=19740 [2021-05-01 07:13:45,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-05-01 07:13:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 82. [2021-05-01 07:13:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 74 states have internal predecessors, (87), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:13:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2021-05-01 07:13:45,587 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 65 [2021-05-01 07:13:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:13:45,589 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2021-05-01 07:13:45,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 58 states have internal predecessors, (61), 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 07:13:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2021-05-01 07:13:45,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 07:13:45,590 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:13:45,590 INFO L519 BasicCegarLoop]: trace histogram [41, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:13:45,590 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-05-01 07:13:45,590 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:13:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:13:45,590 INFO L82 PathProgramCache]: Analyzing trace with hash 918521030, now seen corresponding path program 21 times [2021-05-01 07:13:45,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:13:45,590 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336149723] [2021-05-01 07:13:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:13:45,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:45,610 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1221 v_main_~n~0_56) InVars {main_~i~0=v_main_~i~0_1221, main_~n~0=v_main_~n~0_56} OutVars{main_~i~0=v_main_~i~0_1221, main_~n~0=v_main_~n~0_56} AuxVars[] AssignedVars[] [2021-05-01 07:13:45,614 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:13:45,616 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,626 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:45,643 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,644 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:13:45,652 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,670 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,677 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,682 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:13:45,703 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,723 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,729 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,736 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,743 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,750 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,752 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:13:45,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:13:45,836 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:13:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:45,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:45,852 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:13:45,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:13:45,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:13:45,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:45,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:13:45,992 INFO L142 QuantifierPusher]: treesize reduction 20, result has 88.3 percent of original size [2021-05-01 07:13:45,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-05-01 07:13:46,142 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 12 [2021-05-01 07:13:46,147 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.1 percent of original size [2021-05-01 07:13:46,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-05-01 07:13:46,384 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2021-05-01 07:13:46,387 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:13:46,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:13:46,627 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2021-05-01 07:13:46,630 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:13:46,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:13:46,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:46,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:13:46,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:46,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:13:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:46,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:46,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:13:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:46,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:46,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:13:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:13:46,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:13:46,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:46,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:13:46,952 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:13:47,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,075 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:13:47,197 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:47,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:47,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,266 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:47,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,351 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:47,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,441 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:47,532 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:47,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:47,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,607 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:47,705 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:47,707 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:47,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,788 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:47,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:47,891 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:47,999 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:48,001 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:48,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:48,093 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:48,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:48,205 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:48,325 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:48,327 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:48,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:48,427 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:48,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:48,551 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:48,680 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:48,682 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:48,791 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:48,793 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:48,906 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:48,908 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:49,025 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:49,027 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:49,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:49,147 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:49,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:49,289 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:49,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:49,435 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:49,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:49,582 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:49,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:49,724 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:49,885 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:49,887 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:50,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:50,030 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:50,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:50,197 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:50,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:50,373 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:50,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:50,557 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:13:50,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:50,736 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:13:50,919 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:50,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:51,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:51,103 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:51,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:51,296 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:51,492 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:51,494 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:51,672 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:51,674 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:13:51,867 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:51,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:13:52,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:52,064 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:13:52,297 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:52,299 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:13:52,507 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:13:52,509 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:13:52,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:52,700 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:13:52,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:13:52,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:13:52,918 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:13:52,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336149723] [2021-05-01 07:13:52,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [336149723] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:13:52,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:13:52,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2021-05-01 07:13:52,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234521463] [2021-05-01 07:13:52,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-01 07:13:52,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:13:52,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-01 07:13:52,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2669, Unknown=0, NotChecked=0, Total=2862 [2021-05-01 07:13:52,919 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 51 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:13:53,142 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:14:04,572 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:14:05,026 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:14:05,528 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2021-05-01 07:14:06,006 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:14:06,676 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:14:07,059 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:14:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:14:07,064 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2021-05-01 07:14:07,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-01 07:14:07,067 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 51 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 69 [2021-05-01 07:14:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:14:07,068 INFO L225 Difference]: With dead ends: 106 [2021-05-01 07:14:07,068 INFO L226 Difference]: Without dead ends: 82 [2021-05-01 07:14:07,069 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1848 ImplicationChecksByTransitivity, 14918.2ms TimeCoverageRelationStatistics Valid=555, Invalid=10365, Unknown=0, NotChecked=0, Total=10920 [2021-05-01 07:14:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-01 07:14:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-01 07:14:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 74 states have internal predecessors, (85), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:14:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2021-05-01 07:14:07,084 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 69 [2021-05-01 07:14:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:14:07,084 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2021-05-01 07:14:07,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 51 states have internal predecessors, (58), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:14:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2021-05-01 07:14:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-01 07:14:07,084 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:14:07,085 INFO L519 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:14:07,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-05-01 07:14:07,085 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:14:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:14:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash 312744998, now seen corresponding path program 27 times [2021-05-01 07:14:07,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:14:07,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78713626] [2021-05-01 07:14:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:14:07,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:07,095 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1265 v_main_~n~0_57) InVars {main_~i~0=v_main_~i~0_1265, main_~n~0=v_main_~n~0_57} OutVars{main_~i~0=v_main_~i~0_1265, main_~n~0=v_main_~n~0_57} AuxVars[] AssignedVars[] [2021-05-01 07:14:07,098 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:14:07,100 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,107 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,117 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:07,118 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:14:07,125 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,131 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:07,137 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,145 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,154 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,160 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,165 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,171 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,176 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,182 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,183 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:14:07,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:14:07,245 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:14:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:07,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:07,258 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:14:07,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:07,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:14:07,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:14:07,371 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:14:07,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:07,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:07,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:07,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:14:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:07,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:07,518 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 07:14:07,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:14:07,658 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:14:07,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,766 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:14:07,870 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:07,872 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:07,934 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:07,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:07,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:07,999 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:08,082 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:08,084 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:08,148 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:08,150 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:08,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,218 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:08,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,313 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:08,406 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:08,408 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:08,471 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:08,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:08,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,553 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:08,655 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:08,657 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:08,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,747 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:08,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:08,855 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:08,968 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:08,970 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:09,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,064 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:09,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,183 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:09,300 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:09,302 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:09,404 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:09,406 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:09,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,522 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:09,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,658 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:09,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,805 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:09,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:09,907 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:09,992 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:09,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:10,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,067 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:10,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,154 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:10,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,246 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:10,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,346 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:10,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,439 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:10,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,534 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:10,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,627 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:10,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:10,727 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:10,825 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:10,827 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:10,910 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:10,911 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:10,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:11,002 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:11,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:11,106 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:11,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:11,210 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:11,313 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:11,315 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:11,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:11,417 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:11,528 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:11,529 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:11,632 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:11,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:11,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:11,734 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:11,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:11,857 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:11,981 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:11,982 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:12,092 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:12,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:12,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:12,211 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:12,348 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:12,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:12,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:12,463 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:12,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:12,588 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:12,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:12,716 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:12,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:12,846 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:12,980 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:12,981 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:13,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:13,106 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:13,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:13,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:13,253 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:14:13,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78713626] [2021-05-01 07:14:13,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [78713626] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:14:13,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:14:13,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [] total 62 [2021-05-01 07:14:13,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949050757] [2021-05-01 07:14:13,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-01 07:14:13,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:14:13,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-01 07:14:13,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=3674, Unknown=0, NotChecked=0, Total=3906 [2021-05-01 07:14:13,254 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 60 states have internal predecessors, (63), 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 07:14:22,008 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:14:22,738 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:14:22,994 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:14:23,607 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:14:24,458 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:14:24,708 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:14:25,304 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:14:25,543 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:14:26,140 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:14:26,394 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:14:27,003 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:14:27,247 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:14:27,950 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:14:28,196 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:14:28,708 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:14:29,455 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:14:30,317 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:14:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:14:31,845 INFO L93 Difference]: Finished difference Result 136 states and 161 transitions. [2021-05-01 07:14:31,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-01 07:14:31,846 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 60 states have internal predecessors, (63), 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 67 [2021-05-01 07:14:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:14:31,847 INFO L225 Difference]: With dead ends: 136 [2021-05-01 07:14:31,847 INFO L226 Difference]: Without dead ends: 134 [2021-05-01 07:14:31,849 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3731 ImplicationChecksByTransitivity, 15974.5ms TimeCoverageRelationStatistics Valid=966, Invalid=19914, Unknown=0, NotChecked=0, Total=20880 [2021-05-01 07:14:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-05-01 07:14:31,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 84. [2021-05-01 07:14:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 76 states have internal predecessors, (89), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:14:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2021-05-01 07:14:31,865 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 67 [2021-05-01 07:14:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:14:31,865 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2021-05-01 07:14:31,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 61 states have (on average 1.0327868852459017) internal successors, (63), 60 states have internal predecessors, (63), 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 07:14:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2021-05-01 07:14:31,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 07:14:31,867 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:14:31,867 INFO L519 BasicCegarLoop]: trace histogram [43, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:14:31,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-05-01 07:14:31,867 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:14:31,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:14:31,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1939612090, now seen corresponding path program 22 times [2021-05-01 07:14:31,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:14:31,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687206134] [2021-05-01 07:14:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:14:31,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:31,875 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1321 v_main_~n~0_58) InVars {main_~i~0=v_main_~i~0_1321, main_~n~0=v_main_~n~0_58} OutVars{main_~i~0=v_main_~i~0_1321, main_~n~0=v_main_~n~0_58} AuxVars[] AssignedVars[] [2021-05-01 07:14:31,877 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:14:31,881 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 0, result has 100.0 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 07:14:31,894 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,895 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,901 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:31,905 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,905 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:14:31,910 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,914 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,917 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,921 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:31,926 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:31,927 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [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 63 [2021-05-01 07:14:31,966 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:14:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [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 1 [2021-05-01 07:14:32,015 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:14:32,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:32,028 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:14:32,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:14:32,055 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:14:32,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:14:32,098 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:14:32,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:14:32,240 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 12 [2021-05-01 07:14:32,243 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:14:32,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:14:32,402 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2021-05-01 07:14:32,405 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:14:32,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:14:32,556 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2021-05-01 07:14:32,559 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:14:32,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:32,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:32,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:32,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:32,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:14:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:32,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:32,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:14:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:32,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:32,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:14:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:32,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:14:32,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:14:32,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,845 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:14:32,927 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:32,929 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:32,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:32,971 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:33,030 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:33,031 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:33,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,086 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:33,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,158 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:33,224 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:33,225 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:33,279 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:33,280 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:33,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,340 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:33,416 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:33,417 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:33,482 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:33,483 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:33,549 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:33,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:33,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,624 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:33,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,704 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:33,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,789 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:33,880 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:33,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:33,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:33,955 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:34,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,043 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:34,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,130 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:34,216 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:34,217 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:34,290 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:34,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:34,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,364 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:34,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,456 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:34,562 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:34,563 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:34,648 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:34,649 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:34,730 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:34,731 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:34,816 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:34,817 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:34,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,896 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:34,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:34,992 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:35,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:35,096 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:35,197 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:35,199 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:35,288 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:35,289 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:35,391 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:35,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:35,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:35,495 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:35,612 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:35,613 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:35,747 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:35,749 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:35,961 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:35,963 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:36,182 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:36,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:36,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:36,417 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:36,673 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:36,682 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:36,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:36,914 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:37,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:37,161 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:37,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:37,426 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:37,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:37,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:37,719 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:14:37,719 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687206134] [2021-05-01 07:14:37,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [687206134] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:14:37,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:14:37,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2021-05-01 07:14:37,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561009218] [2021-05-01 07:14:37,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-01 07:14:37,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:14:37,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-01 07:14:37,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2879, Unknown=0, NotChecked=0, Total=3080 [2021-05-01 07:14:37,721 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 53 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:14:37,993 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:14:48,932 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:14:49,529 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:14:50,155 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2021-05-01 07:14:50,824 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:14:51,915 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:14:52,680 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:14:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:14:52,685 INFO L93 Difference]: Finished difference Result 108 states and 124 transitions. [2021-05-01 07:14:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-01 07:14:52,690 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 53 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 71 [2021-05-01 07:14:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:14:52,691 INFO L225 Difference]: With dead ends: 108 [2021-05-01 07:14:52,691 INFO L226 Difference]: Without dead ends: 84 [2021-05-01 07:14:52,692 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1977 ImplicationChecksByTransitivity, 13952.6ms TimeCoverageRelationStatistics Valid=577, Invalid=11195, Unknown=0, NotChecked=0, Total=11772 [2021-05-01 07:14:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-01 07:14:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-01 07:14:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 75 states have (on average 1.16) internal successors, (87), 76 states have internal predecessors, (87), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:14:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 96 transitions. [2021-05-01 07:14:52,736 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 96 transitions. Word has length 71 [2021-05-01 07:14:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:14:52,736 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 96 transitions. [2021-05-01 07:14:52,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 53 states have internal predecessors, (60), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:14:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 96 transitions. [2021-05-01 07:14:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-01 07:14:52,737 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:14:52,737 INFO L519 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:14:52,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-05-01 07:14:52,737 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:14:52,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:14:52,737 INFO L82 PathProgramCache]: Analyzing trace with hash 814798246, now seen corresponding path program 28 times [2021-05-01 07:14:52,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:14:52,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244254096] [2021-05-01 07:14:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:14:52,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:52,746 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1367 v_main_~n~0_59) InVars {main_~i~0=v_main_~i~0_1367, main_~n~0=v_main_~n~0_59} OutVars{main_~i~0=v_main_~i~0_1367, main_~n~0=v_main_~n~0_59} AuxVars[] AssignedVars[] [2021-05-01 07:14:52,748 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:14:52,750 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,757 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:52,762 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,763 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:14:52,770 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,775 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,779 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:14:52,785 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,793 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,797 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,802 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,807 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,811 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,815 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,817 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:14:52,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:14:52,870 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:14:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:52,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:52,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:52,902 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:14:52,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:14:52,934 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:14:52,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:14:52,994 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:14:52,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:14:53,086 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:14:53,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:14:53,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:53,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:53,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:53,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:14:53,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:53,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:14:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:14:53,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:53,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:53,255 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 07:14:53,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:53,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:14:53,436 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:14:53,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:53,531 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:14:53,620 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:53,621 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:53,663 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:53,665 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:53,710 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:53,711 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:53,761 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:53,763 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:53,814 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:53,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:53,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:53,867 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:53,936 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:53,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:53,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:53,997 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:54,075 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:54,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:54,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:54,144 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:54,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:54,224 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:54,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:54,302 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:54,386 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:54,387 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:54,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:54,459 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:54,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:54,547 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:54,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:54,640 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:54,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:54,747 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:54,845 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:54,846 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:54,925 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:54,926 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:55,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:55,012 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:55,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:55,119 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:55,230 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:55,231 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:55,325 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:55,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:55,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:55,418 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:55,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:55,537 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:55,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:55,658 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:55,780 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:55,782 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:55,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:55,892 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:56,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:56,018 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:56,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:56,144 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:56,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:56,279 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:56,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:56,428 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:56,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:56,560 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:56,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:56,694 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:56,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:56,832 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:56,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:56,974 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:57,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:57,116 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:57,261 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:57,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:57,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:57,396 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:57,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:57,543 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:57,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:57,689 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:57,834 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:57,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:57,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:57,970 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:58,119 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:58,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:14:58,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:58,259 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:14:58,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:58,418 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:14:58,573 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:58,574 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:58,742 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:58,744 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:58,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:58,891 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:14:59,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:59,054 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:59,222 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:59,223 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:14:59,379 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:59,380 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:14:59,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:59,543 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:14:59,727 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:14:59,728 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:14:59,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:14:59,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:14:59,893 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:14:59,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244254096] [2021-05-01 07:14:59,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [244254096] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:14:59,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:14:59,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [64] imperfect sequences [] total 64 [2021-05-01 07:14:59,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988165655] [2021-05-01 07:14:59,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-01 07:14:59,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:14:59,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-01 07:14:59,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3920, Unknown=0, NotChecked=0, Total=4160 [2021-05-01 07:14:59,894 INFO L87 Difference]: Start difference. First operand 84 states and 96 transitions. Second operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 62 states have internal predecessors, (65), 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 07:15:13,084 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:15:14,163 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:15:14,669 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:15:15,845 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:15:16,378 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:15:17,669 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:15:18,164 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:15:18,906 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:15:19,216 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:15:19,915 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:15:20,217 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:15:20,966 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:15:21,264 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:15:21,993 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:15:22,300 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:15:23,162 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:15:23,488 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:15:24,293 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 07:15:24,627 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:15:25,370 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:15:25,687 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:15:26,579 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:15:26,978 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-05-01 07:15:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:15:28,205 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2021-05-01 07:15:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-05-01 07:15:28,208 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 62 states have internal predecessors, (65), 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 69 [2021-05-01 07:15:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:15:28,209 INFO L225 Difference]: With dead ends: 138 [2021-05-01 07:15:28,209 INFO L226 Difference]: Without dead ends: 136 [2021-05-01 07:15:28,210 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3912 ImplicationChecksByTransitivity, 22520.7ms TimeCoverageRelationStatistics Valid=990, Invalid=21062, Unknown=0, NotChecked=0, Total=22052 [2021-05-01 07:15:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-05-01 07:15:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 86. [2021-05-01 07:15:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 78 states have internal predecessors, (91), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:15:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 100 transitions. [2021-05-01 07:15:28,226 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 100 transitions. Word has length 69 [2021-05-01 07:15:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:15:28,226 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 100 transitions. [2021-05-01 07:15:28,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 62 states have internal predecessors, (65), 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 07:15:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 100 transitions. [2021-05-01 07:15:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-01 07:15:28,227 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:15:28,227 INFO L519 BasicCegarLoop]: trace histogram [45, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:15:28,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-05-01 07:15:28,227 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:15:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:15:28,227 INFO L82 PathProgramCache]: Analyzing trace with hash 173529030, now seen corresponding path program 23 times [2021-05-01 07:15:28,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:15:28,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105861525] [2021-05-01 07:15:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:15:28,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:28,237 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1425 v_main_~n~0_60) InVars {main_~i~0=v_main_~i~0_1425, main_~n~0=v_main_~n~0_60} OutVars{main_~i~0=v_main_~i~0_1425, main_~n~0=v_main_~n~0_60} AuxVars[] AssignedVars[] [2021-05-01 07:15:28,240 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:15:28,246 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,252 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,258 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,263 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,268 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,270 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,277 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,284 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:28,286 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:15:28,292 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,297 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:28,305 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,311 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,319 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,321 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:15:28,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:15:28,390 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:15:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:28,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:28,405 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:15:28,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:15:28,425 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:15:28,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:15:28,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:15:28,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:28,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:15:28,521 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:15:28,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:15:28,650 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 12 [2021-05-01 07:15:28,653 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:15:28,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:15:28,849 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-05-01 07:15:28,853 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:15:28,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:15:29,059 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2021-05-01 07:15:29,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:29,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:29,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:29,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:29,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:15:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:29,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:15:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:29,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:15:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:29,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:15:29,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:15:29,341 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:15:29,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,463 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:15:29,604 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:29,606 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:29,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,674 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:15:29,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:29,764 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:29,854 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:29,855 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:15:29,928 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:29,929 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:30,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:30,011 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:30,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:30,110 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:15:30,203 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:30,204 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:15:30,284 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:30,285 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:30,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:30,368 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:30,471 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:30,473 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:30,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:30,559 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:30,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:30,668 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:15:30,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:30,777 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:30,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:30,893 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:15:31,011 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:31,013 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:31,115 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:31,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:31,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:31,227 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:15:31,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:31,356 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:31,487 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:31,489 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:31,606 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:31,607 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:31,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:31,728 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:31,868 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:31,871 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:31,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:31,995 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:15:32,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:32,128 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:32,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:32,270 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:32,415 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:32,417 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:32,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:32,545 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:32,693 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:32,694 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:32,825 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:32,826 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:15:32,962 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:32,964 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:33,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:33,108 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:15:33,268 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:33,270 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:15:33,421 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:33,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:33,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:33,577 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:33,746 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:33,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:33,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:33,902 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:34,082 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:34,083 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:34,246 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:34,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:34,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:34,411 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:34,622 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:34,624 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:34,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:34,796 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:34,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:34,982 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:35,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:35,171 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:35,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:35,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:35,366 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:15:35,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105861525] [2021-05-01 07:15:35,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2105861525] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:15:35,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:15:35,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2021-05-01 07:15:35,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11614297] [2021-05-01 07:15:35,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-01 07:15:35,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:15:35,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-01 07:15:35,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3162, Unknown=0, NotChecked=0, Total=3422 [2021-05-01 07:15:35,367 INFO L87 Difference]: Start difference. First operand 86 states and 100 transitions. Second operand has 57 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 55 states have internal predecessors, (62), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:15:35,710 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:15:47,908 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:15:48,380 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:15:48,860 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2021-05-01 07:15:49,377 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:15:50,675 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:15:51,780 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:15:51,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:15:51,786 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2021-05-01 07:15:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-01 07:15:51,793 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 55 states have internal predecessors, (62), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 73 [2021-05-01 07:15:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:15:51,794 INFO L225 Difference]: With dead ends: 110 [2021-05-01 07:15:51,794 INFO L226 Difference]: Without dead ends: 86 [2021-05-01 07:15:51,795 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2175 ImplicationChecksByTransitivity, 15489.8ms TimeCoverageRelationStatistics Valid=700, Invalid=12182, Unknown=0, NotChecked=0, Total=12882 [2021-05-01 07:15:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-01 07:15:51,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-01 07:15:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 77 states have (on average 1.155844155844156) internal successors, (89), 78 states have internal predecessors, (89), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:15:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2021-05-01 07:15:51,815 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 73 [2021-05-01 07:15:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:15:51,816 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2021-05-01 07:15:51,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 55 states have internal predecessors, (62), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:15:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2021-05-01 07:15:51,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-01 07:15:51,816 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:15:51,816 INFO L519 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:15:51,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-05-01 07:15:51,817 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:15:51,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:15:51,817 INFO L82 PathProgramCache]: Analyzing trace with hash -2043334874, now seen corresponding path program 29 times [2021-05-01 07:15:51,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:15:51,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122878979] [2021-05-01 07:15:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:15:51,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:51,838 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1473 v_main_~n~0_61) InVars {main_~i~0=v_main_~i~0_1473, main_~n~0=v_main_~n~0_61} OutVars{main_~i~0=v_main_~i~0_1473, main_~n~0=v_main_~n~0_61} AuxVars[] AssignedVars[] [2021-05-01 07:15:51,844 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:15:51,847 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,859 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,874 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:51,876 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:15:51,888 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,912 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,921 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:15:51,935 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,945 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,954 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,962 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,971 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,981 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:51,984 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:15:52,104 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 07:15:52,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:52,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:15:52,111 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:15:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:52,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:52,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:52,163 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:15:52,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:15:52,207 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:15:52,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:15:52,266 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:15:52,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:15:52,358 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:15:52,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:15:52,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:52,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:52,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:52,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:15:52,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:52,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:52,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:15:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:15:52,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:52,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:15:52,530 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 07:15:52,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:52,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:15:52,732 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:15:52,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:52,882 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:15:53,031 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:53,033 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:15:53,108 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:53,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:53,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:53,196 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:53,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:53,310 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:15:53,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:53,423 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:15:53,541 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:53,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:53,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:53,639 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:53,768 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:53,771 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:53,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:53,878 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:15:54,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:54,018 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:15:54,167 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:54,170 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:54,294 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:54,295 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:54,423 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:54,425 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:54,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:54,544 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:54,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:54,709 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:54,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:54,883 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:55,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:55,059 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:15:55,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:55,236 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:55,415 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:55,418 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:15:55,579 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:55,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:55,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:55,749 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:55,940 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:55,942 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:56,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:56,096 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:56,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:56,291 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:56,489 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:56,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:56,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:56,638 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:15:56,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:56,845 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:57,060 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:57,063 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:57,263 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:57,266 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:15:57,473 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:57,475 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:15:57,671 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:57,673 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:57,888 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:57,891 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:58,106 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:58,109 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:58,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:58,328 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:15:58,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:58,560 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:15:58,804 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:58,806 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:15:59,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:59,030 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:15:59,291 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:59,293 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:15:59,537 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:15:59,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:15:59,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:15:59,797 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:16:00,068 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:00,071 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:16:00,318 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:00,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:16:00,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:00,562 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:16:00,849 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:00,851 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:01,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,108 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:16:01,420 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:01,422 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:01,695 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:01,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:16:01,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:01,986 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:16:02,307 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:02,310 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:16:02,592 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:02,594 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:16:02,876 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:02,879 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:03,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,177 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:16:03,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,501 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:03,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:03,827 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:04,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,153 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:04,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,478 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:04,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:04,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:04,777 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:16:04,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122878979] [2021-05-01 07:16:04,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1122878979] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:16:04,778 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:16:04,778 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [66] imperfect sequences [] total 66 [2021-05-01 07:16:04,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577247834] [2021-05-01 07:16:04,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-01 07:16:04,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:16:04,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-01 07:16:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4174, Unknown=0, NotChecked=0, Total=4422 [2021-05-01 07:16:04,779 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 64 states have internal predecessors, (67), 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 07:16:05,033 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:16:25,586 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:16:26,589 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:16:27,123 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:16:28,293 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:16:28,809 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:16:30,079 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:16:30,611 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:16:32,013 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:16:32,545 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:16:33,773 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:16:34,347 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:16:35,723 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:16:36,378 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:16:37,024 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:16:38,418 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 07:16:39,140 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:16:39,795 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:16:41,080 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:16:41,698 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:16:43,178 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:16:43,797 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:16:45,044 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:16:45,541 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:16:46,256 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:16:46,920 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:16:47,541 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-05-01 07:16:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:16:49,378 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2021-05-01 07:16:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-01 07:16:49,383 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 64 states have internal predecessors, (67), 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 71 [2021-05-01 07:16:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:16:49,384 INFO L225 Difference]: With dead ends: 140 [2021-05-01 07:16:49,384 INFO L226 Difference]: Without dead ends: 138 [2021-05-01 07:16:49,385 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4097 ImplicationChecksByTransitivity, 36534.1ms TimeCoverageRelationStatistics Valid=1014, Invalid=22242, Unknown=0, NotChecked=0, Total=23256 [2021-05-01 07:16:49,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-05-01 07:16:49,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 88. [2021-05-01 07:16:49,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 80 states have internal predecessors, (93), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:16:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2021-05-01 07:16:49,402 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 71 [2021-05-01 07:16:49,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:16:49,402 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2021-05-01 07:16:49,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 64 states have internal predecessors, (67), 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 07:16:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2021-05-01 07:16:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-01 07:16:49,403 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:16:49,403 INFO L519 BasicCegarLoop]: trace histogram [47, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:16:49,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-05-01 07:16:49,403 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:16:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:16:49,404 INFO L82 PathProgramCache]: Analyzing trace with hash -617385658, now seen corresponding path program 24 times [2021-05-01 07:16:49,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:16:49,404 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245599400] [2021-05-01 07:16:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:16:49,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:16:49,416 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1533 v_main_~n~0_62) InVars {main_~i~0=v_main_~i~0_1533, main_~n~0=v_main_~n~0_62} OutVars{main_~i~0=v_main_~i~0_1533, main_~n~0=v_main_~n~0_62} AuxVars[] AssignedVars[] [2021-05-01 07:16:49,420 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:16:49,423 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,434 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:16:49,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,446 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:16:49,453 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:16:49,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,486 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,496 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,503 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,510 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,519 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,528 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,537 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,539 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:16:49,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:16:49,640 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:16:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:49,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:49,657 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:16:49,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:16:49,687 INFO L142 QuantifierPusher]: treesize reduction 6, result has 70.0 percent of original size [2021-05-01 07:16:49,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:16:49,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:16:49,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:49,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:16:49,816 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.1 percent of original size [2021-05-01 07:16:49,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:16:50,025 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 12 [2021-05-01 07:16:50,031 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.5 percent of original size [2021-05-01 07:16:50,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:16:50,349 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2021-05-01 07:16:50,353 INFO L142 QuantifierPusher]: treesize reduction 15, result has 88.6 percent of original size [2021-05-01 07:16:50,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-05-01 07:16:50,705 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2021-05-01 07:16:50,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:16:50,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:16:50,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:16:50,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:50,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:16:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:50,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:50,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:16:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:50,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:50,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:16:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:16:50,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:16:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:16:50,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:50,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:16:51,136 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:16:51,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:51,300 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:16:51,485 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:51,488 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:51,577 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:51,580 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:16:51,674 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:51,677 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:51,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:51,777 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:16:51,915 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:51,918 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:52,033 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:52,036 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:52,156 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:52,158 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:52,279 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:52,282 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:52,408 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:52,411 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:52,556 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:52,558 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:52,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:52,709 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:52,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:52,874 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:16:53,051 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:53,054 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:53,208 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:53,211 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:53,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:53,356 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:16:53,552 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:53,554 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:16:53,713 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:53,715 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:53,884 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:53,888 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:54,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,067 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:54,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,278 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:54,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,505 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:16:54,730 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:54,733 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:54,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:54,920 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:16:55,149 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:55,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:16:55,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:55,366 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:55,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:55,604 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:16:55,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:55,867 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:16:56,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:56,121 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:56,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:56,378 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:56,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:56,654 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:16:56,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:56,932 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:16:57,212 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:57,215 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:57,472 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:57,474 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:57,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:57,726 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:16:58,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:58,012 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:16:58,312 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:58,315 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:16:58,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:58,585 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:16:58,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:16:58,890 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:16:59,201 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:59,204 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:16:59,482 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:59,484 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:16:59,747 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:16:59,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:00,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:00,026 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:00,353 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:00,356 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:00,636 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:00,638 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:00,928 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:00,931 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:01,225 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:01,227 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:01,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:01,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:01,543 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:17:01,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245599400] [2021-05-01 07:17:01,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [245599400] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:17:01,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:17:01,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2021-05-01 07:17:01,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99970685] [2021-05-01 07:17:01,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-01 07:17:01,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:17:01,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-01 07:17:01,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3390, Unknown=0, NotChecked=0, Total=3660 [2021-05-01 07:17:01,545 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 59 states, 58 states have (on average 1.103448275862069) internal successors, (64), 57 states have internal predecessors, (64), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:17:02,002 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:17:23,029 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:17:23,756 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:17:24,441 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2021-05-01 07:17:25,169 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:17:26,338 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:17:27,163 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:17:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:17:27,168 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2021-05-01 07:17:27,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-01 07:17:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 1.103448275862069) internal successors, (64), 57 states have internal predecessors, (64), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 75 [2021-05-01 07:17:27,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:17:27,176 INFO L225 Difference]: With dead ends: 112 [2021-05-01 07:17:27,176 INFO L226 Difference]: Without dead ends: 88 [2021-05-01 07:17:27,177 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2314 ImplicationChecksByTransitivity, 25146.8ms TimeCoverageRelationStatistics Valid=726, Invalid=13080, Unknown=0, NotChecked=0, Total=13806 [2021-05-01 07:17:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-01 07:17:27,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-01 07:17:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 80 states have internal predecessors, (91), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:17:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2021-05-01 07:17:27,194 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 75 [2021-05-01 07:17:27,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:17:27,194 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2021-05-01 07:17:27,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 58 states have (on average 1.103448275862069) internal successors, (64), 57 states have internal predecessors, (64), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:17:27,194 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2021-05-01 07:17:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-01 07:17:27,195 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:17:27,195 INFO L519 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:17:27,195 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-05-01 07:17:27,195 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:17:27,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:17:27,195 INFO L82 PathProgramCache]: Analyzing trace with hash 69806246, now seen corresponding path program 30 times [2021-05-01 07:17:27,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:17:27,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733552139] [2021-05-01 07:17:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:17:27,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:17:27,210 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1583 v_main_~n~0_63) InVars {main_~i~0=v_main_~i~0_1583, main_~n~0=v_main_~n~0_63} OutVars{main_~i~0=v_main_~i~0_1583, main_~n~0=v_main_~n~0_63} AuxVars[] AssignedVars[] [2021-05-01 07:17:27,213 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:17:27,216 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,226 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,238 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:17:27,240 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:17:27,249 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:17:27,261 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,272 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,297 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,306 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,325 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,333 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,342 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,344 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:17:27,448 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 07:17:27,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:17:27,456 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:17:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:17:27,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:27,471 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:17:27,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:17:27,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:17:27,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:17:27,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:17:27,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:17:27,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:17:27,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:17:27,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:17:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:17:27,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:27,843 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 07:17:27,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:27,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:17:28,045 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:17:28,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:28,200 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:17:28,361 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:28,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:28,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:28,449 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:17:28,566 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:28,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:28,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:28,656 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:17:28,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:28,786 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:17:28,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:28,928 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:17:29,064 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:29,066 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:29,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:29,174 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:29,313 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:29,315 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:29,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:29,438 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:29,597 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:29,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:29,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:29,731 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:17:29,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:29,902 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:17:30,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:30,093 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:17:30,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:30,239 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:17:30,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:30,408 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:17:30,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:30,584 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:30,767 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:30,769 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:17:30,921 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:30,924 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:17:31,086 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:31,089 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:31,261 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:31,264 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:31,433 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:31,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:31,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:31,604 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:17:31,818 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:31,821 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:32,012 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:32,014 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:32,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:32,197 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:32,444 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:32,447 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:32,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:32,659 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:17:32,913 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:32,915 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:33,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:33,128 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:33,382 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:33,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:33,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:33,627 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:33,892 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:33,895 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:34,124 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:34,127 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:34,377 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:34,380 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:34,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:34,625 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:34,913 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:34,916 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:35,169 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:35,172 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:35,431 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:35,434 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:17:35,700 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:35,703 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:35,976 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:35,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:36,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:36,241 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:17:36,556 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:36,558 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:36,852 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:36,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:37,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:37,143 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:17:37,494 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:37,497 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:17:37,794 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:37,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:17:38,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:38,102 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:17:38,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:38,427 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:17:38,772 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:38,774 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:17:38,995 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:38,997 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:39,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:39,209 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:17:39,452 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:39,454 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:17:39,674 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:17:39,676 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:17:39,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:39,910 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:17:40,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:40,164 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:17:40,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:40,421 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:17:40,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:40,679 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:17:40,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:17:40,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:17:40,932 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:17:40,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733552139] [2021-05-01 07:17:40,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1733552139] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:17:40,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:17:40,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [68] imperfect sequences [] total 68 [2021-05-01 07:17:40,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859234653] [2021-05-01 07:17:40,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-01 07:17:40,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:17:40,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-01 07:17:40,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=4509, Unknown=0, NotChecked=0, Total=4830 [2021-05-01 07:17:40,934 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 66 states have internal predecessors, (69), 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 07:17:41,150 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:17:59,319 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:18:00,087 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:18:00,518 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:18:01,610 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:18:02,031 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:18:03,069 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:18:03,504 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:18:04,535 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:18:04,937 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:18:05,947 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:18:06,377 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:18:07,385 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:18:07,814 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:18:08,895 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:18:09,290 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:18:10,408 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:18:10,834 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:18:11,843 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:18:12,267 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:18:13,258 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:18:13,690 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:18:14,349 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:18:14,950 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:18:15,500 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-05-01 07:18:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:18:17,108 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2021-05-01 07:18:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-01 07:18:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 66 states have internal predecessors, (69), 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 73 [2021-05-01 07:18:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:18:17,113 INFO L225 Difference]: With dead ends: 142 [2021-05-01 07:18:17,113 INFO L226 Difference]: Without dead ends: 140 [2021-05-01 07:18:17,115 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4358 ImplicationChecksByTransitivity, 32175.8ms TimeCoverageRelationStatistics Valid=1187, Invalid=23619, Unknown=0, NotChecked=0, Total=24806 [2021-05-01 07:18:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-05-01 07:18:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 90. [2021-05-01 07:18:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 82 states have internal predecessors, (95), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:18:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2021-05-01 07:18:17,132 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 73 [2021-05-01 07:18:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:18:17,132 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2021-05-01 07:18:17,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 66 states have internal predecessors, (69), 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 07:18:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2021-05-01 07:18:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-01 07:18:17,132 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:18:17,132 INFO L519 BasicCegarLoop]: trace histogram [49, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:18:17,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-05-01 07:18:17,133 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:18:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:18:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash -477189434, now seen corresponding path program 25 times [2021-05-01 07:18:17,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:18:17,133 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703660282] [2021-05-01 07:18:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:18:17,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:18:17,144 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1645 v_main_~n~0_64) InVars {main_~i~0=v_main_~i~0_1645, main_~n~0=v_main_~n~0_64} OutVars{main_~i~0=v_main_~i~0_1645, main_~n~0=v_main_~n~0_64} AuxVars[] AssignedVars[] [2021-05-01 07:18:17,147 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:18:17,155 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,163 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,171 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,178 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,185 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,187 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,200 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:18:17,208 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,210 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:18:17,217 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:18:17,228 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,237 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,248 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,262 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,264 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:18:17,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:18:17,354 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:18:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:17,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:17,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:17,371 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:18:17,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:18:17,395 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:18:17,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:18:17,449 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:18:17,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:18:17,529 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:18:17,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:18:17,776 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 12 [2021-05-01 07:18:17,780 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:18:17,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:18:18,064 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2021-05-01 07:18:18,069 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:18:18,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:18:18,347 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2021-05-01 07:18:18,351 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:18:18,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:18:18,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:18,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:18:18,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:18,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:18:18,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:18,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:18,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:18:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:18,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:18,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:18:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:18,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:18,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:18,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:18:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:18,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:18,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:18:18,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:18,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:18:18,715 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:18:18,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:18,851 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:18:18,993 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:18,995 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:19,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:19,071 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:18:19,176 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:19,178 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:18:19,259 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:19,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:18:19,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:19,348 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:19,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:19,462 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:19,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:19,576 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:19,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:19,699 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:19,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:19,813 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:19,936 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:19,938 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:20,041 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:20,043 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:20,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:20,177 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:20,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:20,311 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:20,448 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:20,450 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:20,575 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:20,577 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:20,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:20,696 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:20,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:20,842 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:20,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:20,990 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:21,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:21,143 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:21,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:21,306 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:18:21,462 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:21,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:18:21,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:21,598 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:21,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:21,768 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:18:21,943 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:21,945 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:22,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:22,097 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:22,280 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:22,282 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:22,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:22,444 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:22,654 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:22,656 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:22,823 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:22,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:18:23,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:23,005 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:18:23,202 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:23,204 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:23,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:23,381 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:23,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:23,590 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:23,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:23,808 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:24,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:24,031 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:24,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:24,288 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:24,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:24,554 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:24,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:24,799 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:25,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:25,052 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:25,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:25,305 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:25,566 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:25,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:18:25,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:25,810 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:26,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,092 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:26,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,382 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:26,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,673 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:26,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:26,952 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:27,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,239 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:27,532 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:27,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:18:27,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:27,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:27,804 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:18:27,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703660282] [2021-05-01 07:18:27,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [703660282] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:18:27,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:18:27,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2021-05-01 07:18:27,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100397208] [2021-05-01 07:18:27,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-01 07:18:27,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:18:27,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-01 07:18:27,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=3557, Unknown=0, NotChecked=0, Total=3782 [2021-05-01 07:18:27,806 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 59 states have internal predecessors, (66), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:18:28,498 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:18:48,912 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:18:49,488 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:18:50,078 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2021-05-01 07:18:50,731 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:18:51,940 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:18:52,970 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:18:52,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:18:52,975 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2021-05-01 07:18:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-01 07:18:52,980 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.1) internal successors, (66), 59 states have internal predecessors, (66), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 77 [2021-05-01 07:18:52,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:18:52,981 INFO L225 Difference]: With dead ends: 114 [2021-05-01 07:18:52,981 INFO L226 Difference]: Without dead ends: 90 [2021-05-01 07:18:52,982 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2388 ImplicationChecksByTransitivity, 22794.3ms TimeCoverageRelationStatistics Valid=643, Invalid=13877, Unknown=0, NotChecked=0, Total=14520 [2021-05-01 07:18:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-01 07:18:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-01 07:18:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 82 states have internal predecessors, (93), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:18:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-05-01 07:18:52,999 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 77 [2021-05-01 07:18:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:18:52,999 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-05-01 07:18:52,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 60 states have (on average 1.1) internal successors, (66), 59 states have internal predecessors, (66), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:18:52,999 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-05-01 07:18:52,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-01 07:18:53,000 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:18:53,000 INFO L519 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:18:53,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-05-01 07:18:53,000 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:18:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:18:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash -721108442, now seen corresponding path program 31 times [2021-05-01 07:18:53,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:18:53,000 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331770689] [2021-05-01 07:18:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:18:53,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:18:53,013 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1697 v_main_~n~0_65) InVars {main_~i~0=v_main_~i~0_1697, main_~n~0=v_main_~n~0_65} OutVars{main_~i~0=v_main_~i~0_1697, main_~n~0=v_main_~n~0_65} AuxVars[] AssignedVars[] [2021-05-01 07:18:53,016 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:18:53,024 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,034 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,041 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,049 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,057 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,059 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,068 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,081 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:18:53,083 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:18:53,092 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,100 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,107 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:18:53,116 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,128 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,129 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:18:53,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:18:53,227 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:18:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:53,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:53,242 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:18:53,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:18:53,267 INFO L142 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-05-01 07:18:53,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:18:53,323 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-05-01 07:18:53,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:18:53,411 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:18:53,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:18:53,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:18:53,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:18:53,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:18:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:18:53,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:18:53,576 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 07:18:53,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:18:53,759 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:18:53,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:53,911 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:18:54,057 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:54,059 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:54,132 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:54,134 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:54,208 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:54,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:18:54,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:54,291 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:54,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:54,397 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:54,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:54,510 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:54,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:54,625 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:54,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:54,752 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:54,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:54,874 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:55,001 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:55,003 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:55,105 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:55,108 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:55,221 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:55,223 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:55,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:55,339 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:55,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:55,475 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:55,622 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:55,624 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:55,747 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:55,749 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:55,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:55,873 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:18:56,034 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:56,036 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:56,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:56,187 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:56,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:56,356 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:56,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:56,529 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:18:56,700 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:56,702 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:56,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:56,850 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:57,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:57,029 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:57,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:57,215 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:57,395 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:57,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:18:57,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:57,560 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:57,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:57,767 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:57,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:57,956 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:58,161 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:58,163 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:58,345 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:58,347 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:18:58,530 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:58,532 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:18:58,721 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:58,723 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:58,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:58,905 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:18:59,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:59,116 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:18:59,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:59,326 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:18:59,548 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:59,550 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:18:59,749 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:18:59,751 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:18:59,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:18:59,950 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:19:00,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:00,173 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:19:00,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:00,419 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:19:00,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:00,669 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:19:00,911 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:00,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:19:01,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:01,134 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:19:01,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:01,379 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:19:01,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:01,640 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:19:01,890 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:01,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:19:02,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:02,144 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:19:02,419 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:02,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:19:02,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:02,655 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:19:02,933 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:02,935 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:03,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:03,188 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:19:03,502 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:03,505 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:19:03,835 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:03,838 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:19:04,168 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:04,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:19:04,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:04,490 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:19:04,854 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:04,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:19:05,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,190 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:19:05,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:05,563 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:19:05,950 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:05,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:19:06,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:06,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:06,310 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:19:06,310 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331770689] [2021-05-01 07:19:06,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [331770689] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:19:06,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:19:06,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-05-01 07:19:06,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371093088] [2021-05-01 07:19:06,311 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-01 07:19:06,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:19:06,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-01 07:19:06,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=4706, Unknown=0, NotChecked=0, Total=4970 [2021-05-01 07:19:06,312 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 68 states have internal predecessors, (71), 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 07:19:06,608 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:19:33,800 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:19:34,893 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:19:35,479 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:19:36,888 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:19:37,494 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:19:39,038 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:19:39,637 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:19:40,249 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 07:19:41,223 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:19:41,797 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:19:43,202 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:19:43,788 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:19:45,078 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:19:45,560 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:19:46,820 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:19:47,253 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:19:48,556 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:19:49,019 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:19:50,138 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:19:50,631 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:19:51,721 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:19:52,222 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:19:52,967 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:19:53,659 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2021-05-01 07:19:54,295 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-05-01 07:19:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:19:56,046 INFO L93 Difference]: Finished difference Result 144 states and 169 transitions. [2021-05-01 07:19:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-05-01 07:19:56,050 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 68 states have internal predecessors, (71), 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 75 [2021-05-01 07:19:56,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:19:56,051 INFO L225 Difference]: With dead ends: 144 [2021-05-01 07:19:56,051 INFO L226 Difference]: Without dead ends: 142 [2021-05-01 07:19:56,053 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4479 ImplicationChecksByTransitivity, 38515.4ms TimeCoverageRelationStatistics Valid=1062, Invalid=24698, Unknown=0, NotChecked=0, Total=25760 [2021-05-01 07:19:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-01 07:19:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 92. [2021-05-01 07:19:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 84 states have internal predecessors, (97), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:19:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2021-05-01 07:19:56,070 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 75 [2021-05-01 07:19:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:19:56,070 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2021-05-01 07:19:56,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 68 states have internal predecessors, (71), 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 07:19:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2021-05-01 07:19:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-01 07:19:56,071 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:19:56,071 INFO L519 BasicCegarLoop]: trace histogram [51, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:19:56,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-05-01 07:19:56,071 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:19:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:19:56,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1107395654, now seen corresponding path program 26 times [2021-05-01 07:19:56,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:19:56,072 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021612745] [2021-05-01 07:19:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:19:56,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:19:56,083 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1761 v_main_~n~0_66) InVars {main_~i~0=v_main_~i~0_1761, main_~n~0=v_main_~n~0_66} OutVars{main_~i~0=v_main_~i~0_1761, main_~n~0=v_main_~n~0_66} AuxVars[] AssignedVars[] [2021-05-01 07:19:56,085 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:19:56,088 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,096 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,106 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:19:56,108 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:19:56,115 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:19:56,123 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,135 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,142 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,156 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,163 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,171 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,178 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,185 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,192 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,195 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:19:56,297 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 07:19:56,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:19:56,303 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:19:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:56,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:56,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:56,321 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:19:56,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:19:56,347 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:19:56,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:19:56,402 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:19:56,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:19:56,490 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:19:56,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:19:56,753 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 12 [2021-05-01 07:19:56,757 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:19:56,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:19:57,079 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2021-05-01 07:19:57,084 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:19:57,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:19:57,418 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2021-05-01 07:19:57,421 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:19:57,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:19:57,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:57,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:19:57,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:57,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:19:57,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:57,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:57,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:19:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:57,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:57,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:57,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:19:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:57,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:57,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:57,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:19:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:19:57,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:57,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:19:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:19:57,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:57,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:19:57,831 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:19:57,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:57,991 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.8 percent of original size 46 [2021-05-01 07:19:58,161 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:58,163 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:58,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:58,260 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:19:58,380 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:58,382 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:19:58,485 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:58,487 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:19:58,586 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:58,589 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:19:58,690 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:58,692 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:19:58,797 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:58,799 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:19:58,905 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:58,907 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:19:59,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:59,017 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:19:59,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:59,158 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:19:59,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:59,292 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:19:59,432 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:59,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:19:59,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:59,552 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:19:59,699 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:59,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:19:59,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:19:59,828 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:19:59,985 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:19:59,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:00,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:00,129 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:00,312 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:00,314 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:00,456 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:00,458 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:00,608 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:00,610 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:00,764 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:00,766 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:20:00,920 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:00,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:01,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:01,072 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:01,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:01,305 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:01,552 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:01,555 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:01,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:01,777 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:02,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:02,025 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:02,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:02,283 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:02,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:02,543 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:02,803 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:02,805 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:20:03,032 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:03,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:03,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:03,288 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:03,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:03,585 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:03,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:03,875 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:04,171 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:04,174 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:04,459 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:04,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:04,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:04,749 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:05,073 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:05,076 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:05,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:05,371 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:05,703 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:05,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:06,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:06,010 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:06,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:06,344 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:06,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:06,686 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:07,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:07,037 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:07,385 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:07,388 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:07,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:07,700 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:08,053 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:08,056 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:08,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:08,366 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:08,774 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:08,777 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:20:09,126 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:09,129 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:09,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:09,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:09,479 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:20:09,479 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021612745] [2021-05-01 07:20:09,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2021612745] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:20:09,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:20:09,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2021-05-01 07:20:09,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676057871] [2021-05-01 07:20:09,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-01 07:20:09,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:20:09,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-01 07:20:09,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3799, Unknown=0, NotChecked=0, Total=4032 [2021-05-01 07:20:09,480 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 63 states, 62 states have (on average 1.096774193548387) internal successors, (68), 61 states have internal predecessors, (68), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:20:09,852 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:20:28,697 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:20:29,276 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:20:29,847 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2021-05-01 07:20:30,457 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:20:31,195 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:20:31,696 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:20:31,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:20:31,702 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2021-05-01 07:20:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-01 07:20:31,706 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.096774193548387) internal successors, (68), 61 states have internal predecessors, (68), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 79 [2021-05-01 07:20:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:20:31,707 INFO L225 Difference]: With dead ends: 116 [2021-05-01 07:20:31,707 INFO L226 Difference]: Without dead ends: 92 [2021-05-01 07:20:31,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 24676.1ms TimeCoverageRelationStatistics Valid=665, Invalid=14835, Unknown=0, NotChecked=0, Total=15500 [2021-05-01 07:20:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-01 07:20:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-01 07:20:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 83 states have (on average 1.144578313253012) internal successors, (95), 84 states have internal predecessors, (95), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:20:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2021-05-01 07:20:31,725 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 79 [2021-05-01 07:20:31,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:20:31,725 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2021-05-01 07:20:31,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 62 states have (on average 1.096774193548387) internal successors, (68), 61 states have internal predecessors, (68), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:20:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2021-05-01 07:20:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-01 07:20:31,726 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:20:31,726 INFO L519 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:20:31,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-05-01 07:20:31,726 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:20:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:20:31,726 INFO L82 PathProgramCache]: Analyzing trace with hash -580912218, now seen corresponding path program 32 times [2021-05-01 07:20:31,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:20:31,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1393872423] [2021-05-01 07:20:31,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:20:31,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:20:31,738 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1815 v_main_~n~0_67) InVars {main_~i~0=v_main_~i~0_1815, main_~n~0=v_main_~n~0_67} OutVars{main_~i~0=v_main_~i~0_1815, main_~n~0=v_main_~n~0_67} AuxVars[] AssignedVars[] [2021-05-01 07:20:31,741 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:20:31,743 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,751 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,763 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:20:31,765 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:20:31,772 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:20:31,783 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,792 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,800 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,810 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,817 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,825 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,831 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,841 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,848 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,850 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:20:31,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:20:31,937 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:20:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:31,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:31,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:31,949 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:20:31,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:20:31,972 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:20:31,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:20:32,020 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:20:32,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:20:32,098 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:20:32,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:20:32,119 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 0, result has 100.0 percent of original size 4 [2021-05-01 07:20:32,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:20:32,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:20:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:20:32,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:32,255 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 07:20:32,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:20:32,422 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:20:32,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,551 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:20:32,687 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:32,689 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:32,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,756 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:32,850 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:32,852 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:32,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:32,949 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:33,076 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:33,079 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:33,182 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:33,184 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:33,288 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:33,291 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:20:33,401 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:33,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:33,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:33,517 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:33,666 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:33,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:33,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:33,788 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:33,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:33,935 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:34,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,099 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:34,262 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:34,264 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:34,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,417 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:34,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,583 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:34,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:34,764 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:34,963 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:34,966 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:35,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:35,130 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:35,328 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:35,344 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:20:35,520 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:35,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:35,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:35,700 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:35,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:35,903 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:36,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:36,113 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:36,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:36,350 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:36,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:36,588 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:36,814 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:36,816 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:20:37,020 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:37,022 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:37,228 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:37,231 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:37,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:37,445 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:37,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:37,698 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:37,943 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:37,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:38,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:38,170 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:38,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:38,436 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:20:38,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:38,699 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:38,966 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:38,968 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:39,221 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:39,224 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:39,478 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:39,506 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:39,864 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:39,866 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:40,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:40,141 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:40,443 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:40,445 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:20:40,720 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:40,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:40,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:40,991 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:41,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:41,313 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:41,635 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:41,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:41,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:41,929 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:42,253 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:42,255 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:42,561 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:42,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:42,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:42,869 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:43,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:43,215 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:43,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:43,558 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:43,886 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:43,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:44,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:44,196 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:44,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:44,550 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:44,926 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:44,929 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:20:45,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:45,267 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:20:45,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:45,652 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:20:46,052 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:46,055 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:46,551 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:46,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:46,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:46,928 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:20:47,355 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:47,357 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:20:47,742 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:20:47,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:20:48,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:20:48,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:20:48,124 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:20:48,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1393872423] [2021-05-01 07:20:48,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1393872423] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:20:48,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:20:48,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [] total 72 [2021-05-01 07:20:48,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528887445] [2021-05-01 07:20:48,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-01 07:20:48,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:20:48,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-01 07:20:48,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=4984, Unknown=0, NotChecked=0, Total=5256 [2021-05-01 07:20:48,125 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 70 states have internal predecessors, (73), 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 07:20:49,115 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:20:49,598 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:20:51,462 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:21:08,428 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:21:09,747 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2021-05-01 07:21:10,414 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 07:21:20,717 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:21:21,988 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-05-01 07:21:22,616 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:21:24,079 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-05-01 07:21:24,695 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:21:26,306 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:21:26,922 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:21:28,854 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:21:29,473 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:21:31,311 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:21:31,912 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:21:32,547 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-01 07:21:33,836 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:21:34,477 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:21:36,141 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:21:36,775 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:21:38,667 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-05-01 07:21:39,158 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:21:40,507 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:21:41,069 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:21:42,600 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:21:43,217 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:21:44,235 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:21:45,187 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:21:46,082 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-05-01 07:21:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:21:51,086 INFO L93 Difference]: Finished difference Result 146 states and 171 transitions. [2021-05-01 07:21:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-01 07:21:51,092 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 70 states have internal predecessors, (73), 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 77 [2021-05-01 07:21:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:21:51,094 INFO L225 Difference]: With dead ends: 146 [2021-05-01 07:21:51,094 INFO L226 Difference]: Without dead ends: 144 [2021-05-01 07:21:51,095 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4676 ImplicationChecksByTransitivity, 45717.9ms TimeCoverageRelationStatistics Valid=1086, Invalid=25974, Unknown=0, NotChecked=0, Total=27060 [2021-05-01 07:21:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-05-01 07:21:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 94. [2021-05-01 07:21:51,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 86 states have internal predecessors, (99), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:21:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2021-05-01 07:21:51,113 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 77 [2021-05-01 07:21:51,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:21:51,113 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2021-05-01 07:21:51,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 70 states have internal predecessors, (73), 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 07:21:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2021-05-01 07:21:51,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-01 07:21:51,114 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:21:51,114 INFO L519 BasicCegarLoop]: trace histogram [53, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:21:51,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-05-01 07:21:51,114 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:21:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:21:51,114 INFO L82 PathProgramCache]: Analyzing trace with hash -819724858, now seen corresponding path program 27 times [2021-05-01 07:21:51,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:21:51,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908618800] [2021-05-01 07:21:51,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:21:51,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:21:51,127 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1881 v_main_~n~0_68) InVars {main_~i~0=v_main_~i~0_1881, main_~n~0=v_main_~n~0_68} OutVars{main_~i~0=v_main_~i~0_1881, main_~n~0=v_main_~n~0_68} AuxVars[] AssignedVars[] [2021-05-01 07:21:51,130 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:21:51,140 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,148 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,157 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,165 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,173 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,176 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,185 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,199 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:51,201 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:21:51,210 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:21:51,224 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,237 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,249 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,263 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,266 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:21:51,366 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 07:21:51,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:21:51,374 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:21:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:51,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:51,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:51,389 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-05-01 07:21:51,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:21:51,418 INFO L142 QuantifierPusher]: treesize reduction 10, result has 58.3 percent of original size [2021-05-01 07:21:51,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-01 07:21:51,485 INFO L142 QuantifierPusher]: treesize reduction 10, result has 64.3 percent of original size [2021-05-01 07:21:51,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:21:51,587 INFO L142 QuantifierPusher]: treesize reduction 42, result has 78.5 percent of original size [2021-05-01 07:21:51,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-05-01 07:21:51,908 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 12 [2021-05-01 07:21:51,913 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.2 percent of original size [2021-05-01 07:21:51,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:21:52,293 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2021-05-01 07:21:52,298 INFO L142 QuantifierPusher]: treesize reduction 20, result has 89.3 percent of original size [2021-05-01 07:21:52,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:21:52,683 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2021-05-01 07:21:52,688 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:21:52,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:21:52,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:52,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:21:52,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:21:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:52,949 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-05-01 07:21:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:52,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-05-01 07:21:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:21:52,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:21:52,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 07:21:52,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:52,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:21:53,173 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:21:53,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,354 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:21:53,555 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 12 [2021-05-01 07:21:53,559 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:53,562 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:21:53,680 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:53,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:21:53,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:53,799 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:21:53,957 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:53,960 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:54,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,085 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:21:54,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,242 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:21:54,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,404 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:21:54,579 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:54,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:21:54,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:54,732 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:21:54,922 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:54,924 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:21:55,086 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:55,089 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:55,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,256 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:21:55,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,466 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:21:55,676 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:55,679 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:55,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:55,870 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:21:56,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,105 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:21:56,344 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:56,347 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:21:56,539 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:56,542 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:56,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:56,724 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:21:56,954 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:56,956 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:57,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,149 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:21:57,378 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:57,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:21:57,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,586 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:21:57,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:57,817 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:21:58,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:58,051 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:21:58,293 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:58,295 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:21:58,522 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:58,525 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:21:58,747 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:58,749 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:21:58,967 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:58,970 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:21:59,207 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:59,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:21:59,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,434 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:21:59,703 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:21:59,705 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:21:59,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:21:59,939 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:00,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,201 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:00,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:00,472 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:00,758 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:00,760 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:01,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,009 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:01,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,290 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:22:01,584 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:01,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:01,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:01,861 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:02,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,169 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:02,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,481 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:02,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:02,794 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:03,148 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:03,150 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:03,469 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:03,472 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:03,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:03,797 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:04,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,157 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:04,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,534 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:04,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:04,906 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:05,297 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:05,300 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:22:05,660 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:05,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:06,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,017 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:06,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:06,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:06,414 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:06,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908618800] [2021-05-01 07:22:06,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [908618800] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:06,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:06,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-05-01 07:22:06,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224352297] [2021-05-01 07:22:06,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-01 07:22:06,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:06,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-01 07:22:06,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=4049, Unknown=0, NotChecked=0, Total=4290 [2021-05-01 07:22:06,416 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 65 states, 64 states have (on average 1.09375) internal successors, (70), 63 states have internal predecessors, (70), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:22:07,087 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:22:32,169 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:22:33,045 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-05-01 07:22:33,933 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2021-05-01 07:22:34,895 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 36 [2021-05-01 07:22:36,568 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-05-01 07:22:37,813 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:22:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:22:37,820 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2021-05-01 07:22:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-01 07:22:37,825 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 1.09375) internal successors, (70), 63 states have internal predecessors, (70), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 81 [2021-05-01 07:22:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:22:37,826 INFO L225 Difference]: With dead ends: 118 [2021-05-01 07:22:37,826 INFO L226 Difference]: Without dead ends: 94 [2021-05-01 07:22:37,827 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2682 ImplicationChecksByTransitivity, 30506.4ms TimeCoverageRelationStatistics Valid=687, Invalid=15825, Unknown=0, NotChecked=0, Total=16512 [2021-05-01 07:22:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-01 07:22:37,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-01 07:22:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 85 states have (on average 1.1411764705882352) internal successors, (97), 86 states have internal predecessors, (97), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 07:22:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2021-05-01 07:22:37,843 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 81 [2021-05-01 07:22:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:22:37,844 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2021-05-01 07:22:37,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 64 states have (on average 1.09375) internal successors, (70), 63 states have internal predecessors, (70), 4 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 07:22:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2021-05-01 07:22:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-01 07:22:37,844 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:22:37,844 INFO L519 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:22:37,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-05-01 07:22:37,844 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:22:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:22:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1003672870, now seen corresponding path program 33 times [2021-05-01 07:22:37,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:22:37,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971252317] [2021-05-01 07:22:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:22:37,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:22:37,857 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_1937 v_main_~n~0_69) InVars {main_~i~0=v_main_~i~0_1937, main_~n~0=v_main_~n~0_69} OutVars{main_~i~0=v_main_~i~0_1937, main_~n~0=v_main_~n~0_69} AuxVars[] AssignedVars[] [2021-05-01 07:22:37,860 WARN L240 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size [2021-05-01 07:22:37,870 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,879 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,889 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,898 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,907 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,910 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,924 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:37,934 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,936 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:22:37,945 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:22:37,960 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,973 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:37,987 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,003 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,006 WARN L245 tifierPushTermWalker]: treesize reduction 9, result has 87.1 percent of original size 61 [2021-05-01 07:22:38,146 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2021-05-01 07:22:38,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:22:38,154 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:22:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:38,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:38,173 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-05-01 07:22:38,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:22:38,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-05-01 07:22:38,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:22:38,340 INFO L142 QuantifierPusher]: treesize reduction 4, result has 42.9 percent of original size [2021-05-01 07:22:38,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:22:38,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:38,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:22:38,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:22:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:22:38,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:38,587 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 07:22:38,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:38,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-05-01 07:22:38,856 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2021-05-01 07:22:39,030 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-05-01 07:22:39,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:39,038 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-05-01 07:22:39,239 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 12 [2021-05-01 07:22:39,244 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:39,247 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:22:39,344 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:39,346 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:22:39,447 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:39,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:39,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:39,557 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:39,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:39,702 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:39,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:39,825 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:22:39,954 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:39,956 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:40,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:40,072 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:22:40,221 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:40,223 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:40,343 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:40,346 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:40,472 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:40,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:40,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:40,604 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:22:40,774 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:40,777 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:22:40,920 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:40,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:41,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,077 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:41,268 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:41,271 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:41,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,440 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:41,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,641 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:41,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:41,840 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:42,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,042 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:42,252 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:42,255 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:42,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,433 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:42,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,644 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:42,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:42,860 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:43,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:43,076 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:43,296 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:43,299 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:43,524 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:43,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:43,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:43,740 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:43,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:43,973 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:44,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:44,209 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:44,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:44,454 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:44,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:44,703 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:44,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:44,953 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:45,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:45,207 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:22:45,471 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:45,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:45,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:45,713 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:45,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:45,987 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:46,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,264 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:46,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:46,554 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:46,839 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:46,841 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:47,095 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:47,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:47,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,363 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:47,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:47,648 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:47,953 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:47,955 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:48,248 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:48,250 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:48,558 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:48,560 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:48,865 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:48,868 INFO L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-05-01 07:22:49,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,167 INFO L147 QuantifierPusher]: treesize reduction 2, result has 89.5 percent of original size 17 [2021-05-01 07:22:49,530 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:49,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:49,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:49,852 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:50,224 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:50,227 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:22:50,559 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:50,561 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:50,888 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:50,891 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:22:51,231 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:51,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:22:51,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:51,577 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:51,964 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 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:52,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,351 INFO L147 QuantifierPusher]: treesize reduction 3, result has 80.0 percent of original size 12 [2021-05-01 07:22:52,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:52,738 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:53,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,102 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:53,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,469 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:53,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:53,856 INFO L147 QuantifierPusher]: treesize reduction 5, result has 70.6 percent of original size 12 [2021-05-01 07:22:54,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:54,236 INFO L147 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size 17 [2021-05-01 07:22:54,628 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:54,631 INFO L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-05-01 07:22:54,985 INFO L142 QuantifierPusher]: treesize reduction 5, result has 82.1 percent of original size [2021-05-01 07:22:54,987 INFO L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-05-01 07:22:55,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:22:55,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:22:55,337 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:22:55,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971252317] [2021-05-01 07:22:55,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1971252317] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:22:55,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:22:55,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [74] imperfect sequences [] total 74 [2021-05-01 07:22:55,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843348871] [2021-05-01 07:22:55,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-01 07:22:55,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:22:55,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-01 07:22:55,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=5270, Unknown=0, NotChecked=0, Total=5550 [2021-05-01 07:22:55,338 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 72 states have internal predecessors, (75), 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 07:22:55,769 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-05-01 07:23:25,500 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:23:26,733 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:23:27,361 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 40 [2021-05-01 07:23:28,909 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:23:29,496 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:23:31,043 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 07:23:31,623 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:23:33,211 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2021-05-01 07:23:33,848 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-05-01 07:23:35,452 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:23:36,048 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2021-05-01 07:23:37,601 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2021-05-01 07:23:38,192 WARN L205 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2021-05-01 07:23:39,867 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-05-01 07:23:40,493 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2021-05-01 07:23:42,277 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42