/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/loops-crafted-1/loopv3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 07:42:54,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 07:42:54,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 07:42:54,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 07:42:54,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 07:42:54,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 07:42:54,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 07:42:54,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 07:42:54,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 07:42:54,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 07:42:54,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 07:42:54,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 07:42:54,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 07:42:54,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 07:42:54,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 07:42:54,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 07:42:54,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 07:42:54,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 07:42:54,371 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 07:42:54,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 07:42:54,372 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 07:42:54,380 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 07:42:54,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 07:42:54,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 07:42:54,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 07:42:54,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 07:42:54,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 07:42:54,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 07:42:54,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 07:42:54,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 07:42:54,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 07:42:54,383 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 07:42:54,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 07:42:54,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 07:42:54,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 07:42:54,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 07:42:54,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 07:42:54,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 07:42:54,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 07:42:54,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 07:42:54,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 07:42:54,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 07:42:54,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 07:42:54,385 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 07:42:54,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 07:42:54,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 07:42:54,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 07:42:54,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 07:42:54,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 07:42:54,700 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 07:42:54,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c [2021-05-01 07:42:54,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34faa5938/aa43e0d7b6b142aeadb5bb5e34cae680/FLAG95bfff8c5 [2021-05-01 07:42:55,148 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 07:42:55,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c [2021-05-01 07:42:55,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34faa5938/aa43e0d7b6b142aeadb5bb5e34cae680/FLAG95bfff8c5 [2021-05-01 07:42:55,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34faa5938/aa43e0d7b6b142aeadb5bb5e34cae680 [2021-05-01 07:42:55,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 07:42:55,170 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 07:42:55,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 07:42:55,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 07:42:55,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 07:42:55,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3495ccc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55, skipping insertion in model container [2021-05-01 07:42:55,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 07:42:55,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 07:42:55,273 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2021-05-01 07:42:55,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:42:55,286 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 07:42:55,322 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2021-05-01 07:42:55,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 07:42:55,334 INFO L208 MainTranslator]: Completed translation [2021-05-01 07:42:55,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55 WrapperNode [2021-05-01 07:42:55,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 07:42:55,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 07:42:55,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 07:42:55,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 07:42:55,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (1/1) ... [2021-05-01 07:42:55,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 07:42:55,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 07:42:55,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 07:42:55,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 07:42:55,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (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 07:42:55,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 07:42:55,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 07:42:55,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 07:42:55,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 07:42:55,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 07:42:55,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 07:42:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 07:42:55,412 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 07:42:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 07:42:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 07:42:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 07:42:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 07:42:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 07:42:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 07:42:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 07:42:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 07:42:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 07:42:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 07:42:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 07:42:55,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 07:42:55,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 07:42:55,645 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 07:42:55,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:42:55 BoogieIcfgContainer [2021-05-01 07:42:55,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 07:42:55,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 07:42:55,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 07:42:55,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 07:42:55,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 07:42:55" (1/3) ... [2021-05-01 07:42:55,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c50662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:42:55, skipping insertion in model container [2021-05-01 07:42:55,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 07:42:55" (2/3) ... [2021-05-01 07:42:55,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c50662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 07:42:55, skipping insertion in model container [2021-05-01 07:42:55,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 07:42:55" (3/3) ... [2021-05-01 07:42:55,651 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv3.c [2021-05-01 07:42:55,671 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 07:42:55,675 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 07:42:55,686 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 07:42:55,714 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 07:42:55,715 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 07:42:55,715 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 07:42:55,715 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 07:42:55,715 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 07:42:55,715 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 07:42:55,715 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 07:42:55,715 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 07:42:55,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 07:42:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 07:42:55,750 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:42:55,751 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:42:55,751 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:42:55,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:42:55,755 INFO L82 PathProgramCache]: Analyzing trace with hash -380103047, now seen corresponding path program 1 times [2021-05-01 07:42:55,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:42:55,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965900221] [2021-05-01 07:42:55,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:42:55,832 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 07:42:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:55,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:55,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:42:55,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:55,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:55,957 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-05-01 07:42:55,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:55,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:55,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:55,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:42:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:56,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:42:56,008 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 07:42:56,010 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:42:56,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965900221] [2021-05-01 07:42:56,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [965900221] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:42:56,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:42:56,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-01 07:42:56,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797490363] [2021-05-01 07:42:56,016 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 07:42:56,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:42:56,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 07:42:56,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-01 07:42:56,027 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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 07:42:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:42:56,184 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2021-05-01 07:42:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-01 07:42:56,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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 12 [2021-05-01 07:42:56,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:42:56,190 INFO L225 Difference]: With dead ends: 36 [2021-05-01 07:42:56,190 INFO L226 Difference]: Without dead ends: 16 [2021-05-01 07:42:56,192 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 108.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-01 07:42:56,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-01 07:42:56,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-05-01 07:42:56,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:42:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-01 07:42:56,217 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-01 07:42:56,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:42:56,218 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-01 07:42:56,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 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 07:42:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-01 07:42:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 07:42:56,218 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:42:56,218 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:42:56,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 07:42:56,219 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:42:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:42:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash 437044508, now seen corresponding path program 1 times [2021-05-01 07:42:56,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:42:56,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572811922] [2021-05-01 07:42:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:42:56,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:42:56,244 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_7| 2147483648)) (<= |v_main_#t~nondet7_7| 2147483647) (< v_main_~i~0_14 v_~SIZE~0_6) (not (= |v_main_#t~nondet7_7| 0))) InVars {~SIZE~0=v_~SIZE~0_6, main_~i~0=v_main_~i~0_14, main_#t~nondet7=|v_main_#t~nondet7_7|} OutVars{~SIZE~0=v_~SIZE~0_6, main_~i~0=v_main_~i~0_14, main_#t~nondet7=|v_main_#t~nondet7_7|} AuxVars[] AssignedVars[] [2021-05-01 07:42:56,261 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:42:56,270 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,273 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,276 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,279 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,282 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,285 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,288 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,294 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,298 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,310 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,316 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:56,328 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:56,331 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,332 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:42:56,335 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,337 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,345 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,352 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,355 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,357 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,360 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,364 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,366 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,369 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:56,371 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,374 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:42:56,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:42:56,413 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:42:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:56,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:42:56,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:56,511 INFO L142 QuantifierPusher]: treesize reduction 11, result has 76.6 percent of original size [2021-05-01 07:42:56,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-05-01 07:42:56,530 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-05-01 07:42:56,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:42:56,555 INFO L142 QuantifierPusher]: treesize reduction 140, result has 8.5 percent of original size [2021-05-01 07:42:56,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:56,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:56,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:56,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:56,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:42:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:56,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:42:56,640 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 07:42:56,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:56,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:56,656 INFO L147 QuantifierPusher]: treesize reduction 19, result has 78.9 percent of original size 71 [2021-05-01 07:42:56,780 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-05-01 07:42:56,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:42:56,860 INFO L142 QuantifierPusher]: treesize reduction 19, result has 59.6 percent of original size [2021-05-01 07:42:56,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:56,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:56,863 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:42:56,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:56,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:56,885 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:42:56,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572811922] [2021-05-01 07:42:56,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1572811922] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:42:56,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:42:56,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 07:42:56,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128488136] [2021-05-01 07:42:56,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 07:42:56,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:42:56,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 07:42:56,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-01 07:42:56,887 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 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 07:42:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:42:57,214 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-05-01 07:42:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 07:42:57,215 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 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 07:42:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:42:57,215 INFO L225 Difference]: With dead ends: 24 [2021-05-01 07:42:57,216 INFO L226 Difference]: Without dead ends: 18 [2021-05-01 07:42:57,217 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 499.3ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:42:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-01 07:42:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-01 07:42:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 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 07:42:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-01 07:42:57,221 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-01 07:42:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:42:57,221 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-01 07:42:57,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 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 07:42:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-01 07:42:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-01 07:42:57,222 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:42:57,222 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:42:57,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 07:42:57,222 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:42:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:42:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash -2082915426, now seen corresponding path program 1 times [2021-05-01 07:42:57,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:42:57,223 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815935475] [2021-05-01 07:42:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:42:57,227 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:42:57,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:57,230 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_11| 0) (< v_main_~i~0_18 v_~SIZE~0_7)) InVars {~SIZE~0=v_~SIZE~0_7, main_~i~0=v_main_~i~0_18, main_#t~nondet7=|v_main_#t~nondet7_11|} OutVars{~SIZE~0=v_~SIZE~0_7, main_~i~0=v_main_~i~0_18, main_#t~nondet7=|v_main_#t~nondet7_11|} AuxVars[] AssignedVars[] [2021-05-01 07:42:57,234 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:42:57,242 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,245 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,247 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,250 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,255 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,256 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,257 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,260 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,261 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,262 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:42:57,267 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:57,269 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,269 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:42:57,271 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,276 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,278 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,280 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,282 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,285 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,287 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:57,288 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:42:57,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:42:57,309 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:42:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:57,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:57,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:42:57,374 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-05-01 07:42:57,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:42:57,394 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 07:42:57,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:57,416 INFO L142 QuantifierPusher]: treesize reduction 140, result has 8.5 percent of original size [2021-05-01 07:42:57,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:57,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:57,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:57,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:57,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:42:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:57,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:57,489 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 07:42:57,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,494 INFO L147 QuantifierPusher]: treesize reduction 12, result has 81.5 percent of original size 53 [2021-05-01 07:42:57,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 07:42:57,624 INFO L142 QuantifierPusher]: treesize reduction 28, result has 44.0 percent of original size [2021-05-01 07:42:57,626 INFO L147 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size 10 [2021-05-01 07:42:57,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:57,647 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:42:57,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815935475] [2021-05-01 07:42:57,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1815935475] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:42:57,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:42:57,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-05-01 07:42:57,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637905074] [2021-05-01 07:42:57,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-01 07:42:57,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:42:57,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-01 07:42:57,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-01 07:42:57,649 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 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 07:42:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:42:57,957 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-05-01 07:42:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-01 07:42:57,957 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 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 07:42:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:42:57,958 INFO L225 Difference]: With dead ends: 25 [2021-05-01 07:42:57,958 INFO L226 Difference]: Without dead ends: 19 [2021-05-01 07:42:57,959 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 420.5ms TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:42:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-01 07:42:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-05-01 07:42:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 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 07:42:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-01 07:42:57,965 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-01 07:42:57,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:42:57,965 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-01 07:42:57,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 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 07:42:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-01 07:42:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-01 07:42:57,966 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:42:57,966 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:42:57,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-01 07:42:57,966 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:42:57,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:42:57,967 INFO L82 PathProgramCache]: Analyzing trace with hash -263170305, now seen corresponding path program 2 times [2021-05-01 07:42:57,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:42:57,967 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73795161] [2021-05-01 07:42:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:42:57,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:42:57,984 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_15| 2147483648)) (<= |v_main_#t~nondet7_15| 2147483647) (< v_main_~i~0_22 v_~SIZE~0_8) (not (= |v_main_#t~nondet7_15| 0))) InVars {~SIZE~0=v_~SIZE~0_8, main_~i~0=v_main_~i~0_22, main_#t~nondet7=|v_main_#t~nondet7_15|} OutVars{~SIZE~0=v_~SIZE~0_8, main_~i~0=v_main_~i~0_22, main_#t~nondet7=|v_main_#t~nondet7_15|} AuxVars[] AssignedVars[] [2021-05-01 07:42:57,991 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:42:57,998 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:57,999 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,001 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,005 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,006 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:58,009 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:58,011 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,012 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:42:58,014 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,016 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,021 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,024 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,025 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,028 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,030 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,032 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,034 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,036 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:58,038 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,040 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,042 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,044 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,047 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,048 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,050 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,051 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,053 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:42:58,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:42:58,082 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:42:58,083 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:42:58,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:42:58,084 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:42:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:58,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:58,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:42:58,131 INFO L142 QuantifierPusher]: treesize reduction 11, result has 78.8 percent of original size [2021-05-01 07:42:58,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 07:42:58,154 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-05-01 07:42:58,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:42:58,169 INFO L142 QuantifierPusher]: treesize reduction 140, result has 8.5 percent of original size [2021-05-01 07:42:58,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:58,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:58,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:58,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:58,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:42:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:58,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:58,216 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 07:42:58,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:58,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:58,222 INFO L147 QuantifierPusher]: treesize reduction 19, result has 79.6 percent of original size 74 [2021-05-01 07:42:58,298 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-05-01 07:42:58,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:42:58,358 INFO L142 QuantifierPusher]: treesize reduction 19, result has 62.0 percent of original size [2021-05-01 07:42:58,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:58,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:58,361 INFO L147 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size 24 [2021-05-01 07:42:58,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:58,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:58,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:58,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:42:58,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:58,436 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:42:58,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73795161] [2021-05-01 07:42:58,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [73795161] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:42:58,437 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:42:58,437 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 07:42:58,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325677037] [2021-05-01 07:42:58,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 07:42:58,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:42:58,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 07:42:58,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-05-01 07:42:58,438 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:42:58,625 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2021-05-01 07:42:58,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:42:58,892 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-05-01 07:42:58,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 07:42:58,892 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 16 [2021-05-01 07:42:58,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:42:58,893 INFO L225 Difference]: With dead ends: 27 [2021-05-01 07:42:58,893 INFO L226 Difference]: Without dead ends: 21 [2021-05-01 07:42:58,893 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 582.5ms TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:42:58,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-01 07:42:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-05-01 07:42:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 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 07:42:58,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-05-01 07:42:58,897 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2021-05-01 07:42:58,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:42:58,897 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-05-01 07:42:58,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:42:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-05-01 07:42:58,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-01 07:42:58,898 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:42:58,898 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:42:58,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-01 07:42:58,898 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:42:58,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:42:58,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1511837057, now seen corresponding path program 1 times [2021-05-01 07:42:58,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:42:58,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038517312] [2021-05-01 07:42:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:42:58,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:42:58,909 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= |v_main_#t~nondet7_22| 2147483647) (not (= |v_main_#t~nondet7_22| 0)) (< v_main_~i~0_29 v_~SIZE~0_10) (<= 0 (+ |v_main_#t~nondet7_22| 2147483648))) InVars {~SIZE~0=v_~SIZE~0_10, main_~i~0=v_main_~i~0_29, main_#t~nondet7=|v_main_#t~nondet7_22|} OutVars{~SIZE~0=v_~SIZE~0_10, main_~i~0=v_main_~i~0_29, main_#t~nondet7=|v_main_#t~nondet7_22|} AuxVars[] AssignedVars[] [2021-05-01 07:42:58,912 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:42:58,913 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,914 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,917 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,919 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,920 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:58,922 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,925 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:58,925 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:42:58,927 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,931 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,933 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,935 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,937 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,939 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,941 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,942 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,945 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,947 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:58,949 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,952 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,953 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,955 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,957 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,959 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,960 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,962 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,962 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:42:58,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:58,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:42:58,992 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:42:58,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:58,995 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_24| 0) (< v_main_~i~0_31 v_~SIZE~0_11)) InVars {~SIZE~0=v_~SIZE~0_11, main_~i~0=v_main_~i~0_31, main_#t~nondet7=|v_main_#t~nondet7_24|} OutVars{~SIZE~0=v_~SIZE~0_11, main_~i~0=v_main_~i~0_31, main_#t~nondet7=|v_main_#t~nondet7_24|} AuxVars[] AssignedVars[] [2021-05-01 07:42:58,998 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:42:59,001 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,003 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,006 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,008 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,009 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,010 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,011 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,013 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,014 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,015 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:42:59,018 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:59,020 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,020 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:42:59,022 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,023 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:59,027 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,029 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,030 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,032 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,034 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,035 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:42:59,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:42:59,053 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:42:59,053 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:42:59,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:42:59,054 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:42:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:59,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:59,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:42:59,101 INFO L142 QuantifierPusher]: treesize reduction 3, result has 86.4 percent of original size [2021-05-01 07:42:59,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:42:59,120 INFO L142 QuantifierPusher]: treesize reduction 35, result has 45.3 percent of original size [2021-05-01 07:42:59,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:42:59,136 INFO L142 QuantifierPusher]: treesize reduction 38, result has 35.6 percent of original size [2021-05-01 07:42:59,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:59,151 INFO L142 QuantifierPusher]: treesize reduction 68, result has 62.0 percent of original size [2021-05-01 07:42:59,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:42:59,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:59,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:42:59,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:59,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:42:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:59,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:59,232 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 07:42:59,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:59,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:59,237 INFO L147 QuantifierPusher]: treesize reduction 19, result has 79.6 percent of original size 74 [2021-05-01 07:42:59,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:59,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 07:42:59,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:42:59,316 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-05-01 07:42:59,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:42:59,366 INFO L142 QuantifierPusher]: treesize reduction 19, result has 62.0 percent of original size [2021-05-01 07:42:59,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:42:59,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:42:59,368 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.5 percent of original size 29 [2021-05-01 07:42:59,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:59,416 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-05-01 07:42:59,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:42:59,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:42:59,435 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:42:59,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038517312] [2021-05-01 07:42:59,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1038517312] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:42:59,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:42:59,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 07:42:59,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732946052] [2021-05-01 07:42:59,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 07:42:59,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:42:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 07:42:59,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-05-01 07:42:59,437 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:42:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:42:59,738 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-05-01 07:42:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 07:42:59,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 16 [2021-05-01 07:42:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:42:59,741 INFO L225 Difference]: With dead ends: 27 [2021-05-01 07:42:59,741 INFO L226 Difference]: Without dead ends: 21 [2021-05-01 07:42:59,742 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 454.0ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:42:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-01 07:42:59,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-05-01 07:42:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 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 07:42:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-05-01 07:42:59,745 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 16 [2021-05-01 07:42:59,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:42:59,745 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-05-01 07:42:59,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:42:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-05-01 07:42:59,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-01 07:42:59,746 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:42:59,746 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:42:59,746 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-01 07:42:59,746 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:42:59,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:42:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash 416888065, now seen corresponding path program 2 times [2021-05-01 07:42:59,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:42:59,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730040469] [2021-05-01 07:42:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:42:59,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:42:59,752 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_39 v_~SIZE~0_13) (<= 0 (+ |v_main_#t~nondet7_32| 2147483648)) (not (= |v_main_#t~nondet7_32| 0)) (<= |v_main_#t~nondet7_32| 2147483647)) InVars {~SIZE~0=v_~SIZE~0_13, main_~i~0=v_main_~i~0_39, main_#t~nondet7=|v_main_#t~nondet7_32|} OutVars{~SIZE~0=v_~SIZE~0_13, main_~i~0=v_main_~i~0_39, main_#t~nondet7=|v_main_#t~nondet7_32|} AuxVars[] AssignedVars[] [2021-05-01 07:42:59,754 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:42:59,756 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,756 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,759 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,761 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,761 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:42:59,764 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:59,766 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,767 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:42:59,768 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:59,774 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,776 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,778 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,780 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,786 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,788 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,791 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,801 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,803 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,806 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,808 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,812 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,814 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,815 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,817 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,819 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,821 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,822 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:42:59,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:42:59,859 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:42:59,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:59,860 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_41 v_~SIZE~0_14) (= |v_main_#t~nondet7_34| 0)) InVars {~SIZE~0=v_~SIZE~0_14, main_~i~0=v_main_~i~0_41, main_#t~nondet7=|v_main_#t~nondet7_34|} OutVars{~SIZE~0=v_~SIZE~0_14, main_~i~0=v_main_~i~0_41, main_#t~nondet7=|v_main_#t~nondet7_34|} AuxVars[] AssignedVars[] [2021-05-01 07:42:59,862 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:42:59,863 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,863 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,865 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,867 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,868 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:42:59,871 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,873 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:59,876 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:42:59,878 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:42:59,881 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,884 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,886 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,888 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,890 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,898 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,900 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,902 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,903 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,905 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,906 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,907 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:42:59,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:42:59,927 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:42:59,927 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:42:59,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:42:59,940 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:42:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:42:59,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:42:59,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:42:59,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:42:59,984 INFO L142 QuantifierPusher]: treesize reduction 3, result has 86.4 percent of original size [2021-05-01 07:42:59,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:43:00,000 INFO L142 QuantifierPusher]: treesize reduction 36, result has 57.1 percent of original size [2021-05-01 07:43:00,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-05-01 07:43:00,029 INFO L142 QuantifierPusher]: treesize reduction 49, result has 38.0 percent of original size [2021-05-01 07:43:00,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:43:00,054 INFO L142 QuantifierPusher]: treesize reduction 165, result has 7.3 percent of original size [2021-05-01 07:43:00,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:00,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:00,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:00,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:00,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:00,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:00,128 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 07:43:00,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:00,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:00,136 INFO L147 QuantifierPusher]: treesize reduction 19, result has 79.6 percent of original size 74 [2021-05-01 07:43:00,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:00,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-05-01 07:43:00,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:43:00,270 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.7 percent of original size [2021-05-01 07:43:00,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-05-01 07:43:00,319 INFO L142 QuantifierPusher]: treesize reduction 11, result has 77.6 percent of original size [2021-05-01 07:43:00,320 INFO L147 QuantifierPusher]: treesize reduction 2, result has 94.6 percent of original size 35 [2021-05-01 07:43:00,405 INFO L142 QuantifierPusher]: treesize reduction 5, result has 89.1 percent of original size [2021-05-01 07:43:00,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-05-01 07:43:00,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:00,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:00,456 INFO L147 QuantifierPusher]: treesize reduction 2, result has 96.1 percent of original size 49 [2021-05-01 07:43:00,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:00,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:00,507 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:00,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730040469] [2021-05-01 07:43:00,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [730040469] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:00,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:00,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 07:43:00,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435819275] [2021-05-01 07:43:00,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 07:43:00,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:00,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 07:43:00,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-05-01 07:43:00,508 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:43:01,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:01,394 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-05-01 07:43:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-01 07:43:01,394 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 16 [2021-05-01 07:43:01,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:01,395 INFO L225 Difference]: With dead ends: 29 [2021-05-01 07:43:01,395 INFO L226 Difference]: Without dead ends: 23 [2021-05-01 07:43:01,395 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1055.1ms TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2021-05-01 07:43:01,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-01 07:43:01,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-05-01 07:43:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 3 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 07:43:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-05-01 07:43:01,400 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2021-05-01 07:43:01,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:01,400 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-05-01 07:43:01,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:43:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-05-01 07:43:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-01 07:43:01,400 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:01,400 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:01,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-01 07:43:01,400 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:01,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:01,401 INFO L82 PathProgramCache]: Analyzing trace with hash -2103071869, now seen corresponding path program 2 times [2021-05-01 07:43:01,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:01,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225218659] [2021-05-01 07:43:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:01,406 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:43:01,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:01,407 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_42| 0) (< v_main_~i~0_49 v_~SIZE~0_16)) InVars {~SIZE~0=v_~SIZE~0_16, main_~i~0=v_main_~i~0_49, main_#t~nondet7=|v_main_#t~nondet7_42|} OutVars{~SIZE~0=v_~SIZE~0_16, main_~i~0=v_main_~i~0_49, main_#t~nondet7=|v_main_#t~nondet7_42|} AuxVars[] AssignedVars[] [2021-05-01 07:43:01,408 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:43:01,409 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,410 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,412 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,413 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,414 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:43:01,417 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:01,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,419 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:43:01,421 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,422 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:01,426 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,428 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,431 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,433 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,435 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,437 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,441 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,443 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,446 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,446 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:43:01,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:43:01,465 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:43:01,465 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:01,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:43:01,466 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:43:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:01,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:01,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:43:01,494 INFO L142 QuantifierPusher]: treesize reduction 16, result has 72.9 percent of original size [2021-05-01 07:43:01,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-05-01 07:43:01,514 INFO L142 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-05-01 07:43:01,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:43:01,527 INFO L142 QuantifierPusher]: treesize reduction 153, result has 7.8 percent of original size [2021-05-01 07:43:01,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:01,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:01,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:01,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:01,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:01,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:01,576 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 07:43:01,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,579 INFO L147 QuantifierPusher]: treesize reduction 12, result has 81.5 percent of original size 53 [2021-05-01 07:43:01,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-05-01 07:43:01,693 INFO L142 QuantifierPusher]: treesize reduction 28, result has 44.0 percent of original size [2021-05-01 07:43:01,694 INFO L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-05-01 07:43:01,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:01,734 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-05-01 07:43:01,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:43:01,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:01,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:01,748 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:01,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225218659] [2021-05-01 07:43:01,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1225218659] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:01,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:01,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-01 07:43:01,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846216716] [2021-05-01 07:43:01,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-01 07:43:01,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:01,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-01 07:43:01,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-05-01 07:43:01,749 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:43:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:02,132 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-05-01 07:43:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-01 07:43:02,132 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 16 [2021-05-01 07:43:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:02,133 INFO L225 Difference]: With dead ends: 31 [2021-05-01 07:43:02,133 INFO L226 Difference]: Without dead ends: 25 [2021-05-01 07:43:02,133 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 476.4ms TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:43:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-01 07:43:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-05-01 07:43:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 3 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 07:43:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-05-01 07:43:02,137 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2021-05-01 07:43:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:02,137 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-05-01 07:43:02,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 3 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 07:43:02,138 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2021-05-01 07:43:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 07:43:02,138 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:02,138 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:02,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-01 07:43:02,138 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:02,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:02,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1140259874, now seen corresponding path program 3 times [2021-05-01 07:43:02,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:02,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460321100] [2021-05-01 07:43:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:02,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:43:02,153 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_56 v_~SIZE~0_18) (<= 0 (+ |v_main_#t~nondet7_49| 2147483648)) (not (= |v_main_#t~nondet7_49| 0)) (<= |v_main_#t~nondet7_49| 2147483647)) InVars {~SIZE~0=v_~SIZE~0_18, main_~i~0=v_main_~i~0_56, main_#t~nondet7=|v_main_#t~nondet7_49|} OutVars{~SIZE~0=v_~SIZE~0_18, main_~i~0=v_main_~i~0_56, main_#t~nondet7=|v_main_#t~nondet7_49|} AuxVars[] AssignedVars[] [2021-05-01 07:43:02,158 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:43:02,163 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,165 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,169 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,171 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,173 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,175 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,181 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,182 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,183 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,185 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,187 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,188 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:02,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,192 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:02,193 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:43:02,201 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:02,204 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,205 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,209 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,211 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,215 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,217 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,219 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,222 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,224 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,224 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:43:02,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:02,255 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:43:02,255 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:02,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:43:02,256 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-01 07:43:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:02,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:02,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:02,291 INFO L142 QuantifierPusher]: treesize reduction 16, result has 70.4 percent of original size [2021-05-01 07:43:02,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:43:02,307 INFO L142 QuantifierPusher]: treesize reduction 24, result has 55.6 percent of original size [2021-05-01 07:43:02,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:43:02,321 INFO L142 QuantifierPusher]: treesize reduction 153, result has 7.8 percent of original size [2021-05-01 07:43:02,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:02,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:02,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:02,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:02,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:02,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:02,368 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 07:43:02,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:02,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:02,373 INFO L147 QuantifierPusher]: treesize reduction 19, result has 78.9 percent of original size 71 [2021-05-01 07:43:02,451 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-05-01 07:43:02,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:43:02,552 INFO L142 QuantifierPusher]: treesize reduction 19, result has 59.6 percent of original size [2021-05-01 07:43:02,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:02,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:02,555 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:43:02,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:02,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:02,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:02,593 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:43:02,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:02,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:02,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:02,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:02,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:02,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:02,655 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:02,655 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460321100] [2021-05-01 07:43:02,655 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [460321100] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:02,655 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:02,655 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:43:02,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257450481] [2021-05-01 07:43:02,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:43:02,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:02,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:43:02,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:43:02,656 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:03,129 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-05-01 07:43:03,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 07:43:03,130 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 18 [2021-05-01 07:43:03,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:03,130 INFO L225 Difference]: With dead ends: 33 [2021-05-01 07:43:03,130 INFO L226 Difference]: Without dead ends: 27 [2021-05-01 07:43:03,131 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 630.0ms TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:43:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-01 07:43:03,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-05-01 07:43:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 3 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 07:43:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-05-01 07:43:03,143 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2021-05-01 07:43:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:03,143 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-05-01 07:43:03,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-05-01 07:43:03,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 07:43:03,143 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:03,144 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:03,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-01 07:43:03,144 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:03,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:03,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1379700060, now seen corresponding path program 3 times [2021-05-01 07:43:03,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:03,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900846336] [2021-05-01 07:43:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:03,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:43:03,158 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= |v_main_#t~nondet7_57| 2147483647) (<= 0 (+ |v_main_#t~nondet7_57| 2147483648)) (not (= |v_main_#t~nondet7_57| 0)) (< v_main_~i~0_64 v_~SIZE~0_20)) InVars {~SIZE~0=v_~SIZE~0_20, main_~i~0=v_main_~i~0_64, main_#t~nondet7=|v_main_#t~nondet7_57|} OutVars{~SIZE~0=v_~SIZE~0_20, main_~i~0=v_main_~i~0_64, main_#t~nondet7=|v_main_#t~nondet7_57|} AuxVars[] AssignedVars[] [2021-05-01 07:43:03,160 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:43:03,163 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,165 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,167 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,169 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,171 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,173 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,180 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,183 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,183 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,186 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,191 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:03,193 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,195 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:03,196 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:43:03,198 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,200 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,203 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,205 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,206 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,209 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,211 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,213 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,215 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,217 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,225 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:03,226 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:43:03,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:03,256 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:43:03,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:03,257 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_66 v_~SIZE~0_21) (= |v_main_#t~nondet7_59| 0)) InVars {~SIZE~0=v_~SIZE~0_21, main_~i~0=v_main_~i~0_66, main_#t~nondet7=|v_main_#t~nondet7_59|} OutVars{~SIZE~0=v_~SIZE~0_21, main_~i~0=v_main_~i~0_66, main_#t~nondet7=|v_main_#t~nondet7_59|} AuxVars[] AssignedVars[] [2021-05-01 07:43:03,258 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:43:03,259 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,260 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,262 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,264 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,265 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:43:03,267 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,270 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:03,270 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:43:03,272 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:03,276 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,278 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,280 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,283 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,286 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,288 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,290 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,292 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,294 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,296 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,298 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,298 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:43:03,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:43:03,320 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:03,320 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:03,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:43:03,321 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:03,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:03,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:03,389 INFO L142 QuantifierPusher]: treesize reduction 14, result has 54.8 percent of original size [2021-05-01 07:43:03,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-05-01 07:43:03,395 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-05-01 07:43:03,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:43:03,401 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-05-01 07:43:03,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:43:03,413 INFO L142 QuantifierPusher]: treesize reduction 140, result has 8.5 percent of original size [2021-05-01 07:43:03,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:03,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:03,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:03,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:03,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:03,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:03,457 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 07:43:03,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:03,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:03,463 INFO L147 QuantifierPusher]: treesize reduction 19, result has 78.9 percent of original size 71 [2021-05-01 07:43:03,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:03,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:03,469 INFO L142 QuantifierPusher]: treesize reduction 18, result has 85.2 percent of original size [2021-05-01 07:43:03,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:03,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-05-01 07:43:07,562 WARN L205 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-05-01 07:43:09,627 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:43:09,629 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.4 percent of original size [2021-05-01 07:43:09,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:09,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:09,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:09,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 165 [2021-05-01 07:43:13,759 WARN L205 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2021-05-01 07:43:13,774 INFO L142 QuantifierPusher]: treesize reduction 37, result has 75.7 percent of original size [2021-05-01 07:43:13,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:13,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:13,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:13,784 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 117 [2021-05-01 07:43:13,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:13,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:13,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:13,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:13,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:13,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:13,846 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:43:13,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:13,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:13,893 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:43:13,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:13,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:13,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:13,911 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:13,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900846336] [2021-05-01 07:43:13,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1900846336] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:13,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:13,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:43:13,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672108336] [2021-05-01 07:43:13,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:43:13,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:43:13,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:43:13,912 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:18,122 WARN L205 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2021-05-01 07:43:22,297 WARN L205 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2021-05-01 07:43:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:22,540 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2021-05-01 07:43:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 07:43:22,540 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 18 [2021-05-01 07:43:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:22,541 INFO L225 Difference]: With dead ends: 33 [2021-05-01 07:43:22,541 INFO L226 Difference]: Without dead ends: 27 [2021-05-01 07:43:22,541 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 14840.6ms TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:43:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-01 07:43:22,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-05-01 07:43:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 3 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 07:43:22,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-05-01 07:43:22,546 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2021-05-01 07:43:22,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:22,546 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-05-01 07:43:22,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-05-01 07:43:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 07:43:22,546 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:22,546 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:22,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-01 07:43:22,546 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:22,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:22,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1820318244, now seen corresponding path program 4 times [2021-05-01 07:43:22,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:22,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326228596] [2021-05-01 07:43:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:22,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:43:22,553 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= |v_main_#t~nondet7_68| 2147483647) (not (= |v_main_#t~nondet7_68| 0)) (< v_main_~i~0_75 v_~SIZE~0_23) (<= 0 (+ |v_main_#t~nondet7_68| 2147483648))) InVars {~SIZE~0=v_~SIZE~0_23, main_~i~0=v_main_~i~0_75, main_#t~nondet7=|v_main_#t~nondet7_68|} OutVars{~SIZE~0=v_~SIZE~0_23, main_~i~0=v_main_~i~0_75, main_#t~nondet7=|v_main_#t~nondet7_68|} AuxVars[] AssignedVars[] [2021-05-01 07:43:22,555 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:43:22,559 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,561 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,563 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,565 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,568 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,570 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,572 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,573 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,573 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,576 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,578 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,578 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:22,581 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,583 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:22,584 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:43:22,586 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,587 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,591 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,593 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,595 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,597 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,598 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,600 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,602 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,604 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:22,606 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,607 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:43:22,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:22,637 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:43:22,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:22,638 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_77 v_~SIZE~0_24) (= |v_main_#t~nondet7_70| 0)) InVars {~SIZE~0=v_~SIZE~0_24, main_~i~0=v_main_~i~0_77, main_#t~nondet7=|v_main_#t~nondet7_70|} OutVars{~SIZE~0=v_~SIZE~0_24, main_~i~0=v_main_~i~0_77, main_#t~nondet7=|v_main_#t~nondet7_70|} AuxVars[] AssignedVars[] [2021-05-01 07:43:22,639 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:43:22,640 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,641 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,643 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,644 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,645 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:43:22,648 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:22,650 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,650 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:43:22,652 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:22,654 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,657 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,659 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,661 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,663 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,667 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,669 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,670 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,671 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,673 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,673 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:43:22,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:43:22,701 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:22,702 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:22,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:43:22,703 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:22,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:43:22,703 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:22,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:22,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:43:22,749 INFO L142 QuantifierPusher]: treesize reduction 20, result has 73.0 percent of original size [2021-05-01 07:43:22,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-05-01 07:43:22,764 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 07:43:22,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:22,768 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 07:43:22,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:22,782 INFO L142 QuantifierPusher]: treesize reduction 56, result has 67.3 percent of original size [2021-05-01 07:43:22,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:43:22,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:22,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:22,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:22,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:22,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:43:22,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:22,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:22,863 INFO L147 QuantifierPusher]: treesize reduction 19, result has 79.6 percent of original size 74 [2021-05-01 07:43:22,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:22,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:22,870 INFO L142 QuantifierPusher]: treesize reduction 12, result has 92.3 percent of original size [2021-05-01 07:43:22,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-05-01 07:43:22,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-05-01 07:43:25,536 WARN L205 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2021-05-01 07:43:27,575 WARN L205 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 87 [2021-05-01 07:43:27,578 INFO L142 QuantifierPusher]: treesize reduction 8, result has 96.3 percent of original size [2021-05-01 07:43:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:27,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:27,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 144 [2021-05-01 07:43:27,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 208 [2021-05-01 07:43:30,131 WARN L205 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2021-05-01 07:43:30,136 INFO L142 QuantifierPusher]: treesize reduction 39, result has 80.0 percent of original size [2021-05-01 07:43:30,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:30,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:30,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 126 [2021-05-01 07:43:30,141 INFO L147 QuantifierPusher]: treesize reduction 3, result has 97.9 percent of original size 137 [2021-05-01 07:43:30,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:30,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:30,201 INFO L142 QuantifierPusher]: treesize reduction 8, result has 70.4 percent of original size [2021-05-01 07:43:30,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-05-01 07:43:30,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:30,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:30,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:30,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:30,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:30,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:30,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-01 07:43:30,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:30,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:30,269 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:30,269 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326228596] [2021-05-01 07:43:30,269 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [326228596] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:30,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:30,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:43:30,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343414152] [2021-05-01 07:43:30,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:43:30,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:30,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:43:30,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:43:30,271 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:31,987 WARN L205 SmtUtils]: Spent 1.65 s on a formula simplification that was a NOOP. DAG size: 125 [2021-05-01 07:43:33,371 WARN L205 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 118 [2021-05-01 07:43:33,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:33,640 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-05-01 07:43:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 07:43:33,640 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 18 [2021-05-01 07:43:33,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:33,641 INFO L225 Difference]: With dead ends: 35 [2021-05-01 07:43:33,641 INFO L226 Difference]: Without dead ends: 29 [2021-05-01 07:43:33,641 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 7996.2ms TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2021-05-01 07:43:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-01 07:43:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-05-01 07:43:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 3 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 07:43:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-05-01 07:43:33,646 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 18 [2021-05-01 07:43:33,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:33,646 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-05-01 07:43:33,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-05-01 07:43:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 07:43:33,646 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:33,646 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:33,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-01 07:43:33,647 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:33,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:33,647 INFO L82 PathProgramCache]: Analyzing trace with hash -699641690, now seen corresponding path program 5 times [2021-05-01 07:43:33,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:33,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199965069] [2021-05-01 07:43:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:33,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:43:33,654 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_81| 0)) (<= |v_main_#t~nondet7_81| 2147483647) (< v_main_~i~0_88 v_~SIZE~0_27) (<= 0 (+ |v_main_#t~nondet7_81| 2147483648))) InVars {~SIZE~0=v_~SIZE~0_27, main_~i~0=v_main_~i~0_88, main_#t~nondet7=|v_main_#t~nondet7_81|} OutVars{~SIZE~0=v_~SIZE~0_27, main_~i~0=v_main_~i~0_88, main_#t~nondet7=|v_main_#t~nondet7_81|} AuxVars[] AssignedVars[] [2021-05-01 07:43:33,656 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:43:33,660 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,663 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,668 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,670 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,672 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,674 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,675 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,676 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,678 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,680 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,680 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:33,683 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:33,685 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,685 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:43:33,687 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,689 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,691 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:33,693 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,695 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,697 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,699 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,701 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,703 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,705 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,707 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,708 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:43:33,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:33,743 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:43:33,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:33,745 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_83| 0) (< v_main_~i~0_90 v_~SIZE~0_28)) InVars {~SIZE~0=v_~SIZE~0_28, main_~i~0=v_main_~i~0_90, main_#t~nondet7=|v_main_#t~nondet7_83|} OutVars{~SIZE~0=v_~SIZE~0_28, main_~i~0=v_main_~i~0_90, main_#t~nondet7=|v_main_#t~nondet7_83|} AuxVars[] AssignedVars[] [2021-05-01 07:43:33,746 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:43:33,747 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,747 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,750 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,751 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,752 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:43:33,755 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,757 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:33,758 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:43:33,760 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,762 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:33,766 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,769 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,771 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,773 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,775 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,777 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,779 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,781 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,782 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,784 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,784 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:43:33,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:43:33,803 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:33,803 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:33,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:43:33,804 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:33,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:43:33,805 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:33,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:33,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:33,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-05-01 07:43:33,850 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-05-01 07:43:33,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:43:33,867 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 07:43:33,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:33,879 INFO L142 QuantifierPusher]: treesize reduction 90, result has 56.1 percent of original size [2021-05-01 07:43:33,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:43:33,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:33,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:33,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:33,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:33,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:33,945 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 07:43:33,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:33,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:33,949 INFO L147 QuantifierPusher]: treesize reduction 19, result has 78.9 percent of original size 71 [2021-05-01 07:43:33,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:33,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:33,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 07:43:33,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:43:34,077 INFO L142 QuantifierPusher]: treesize reduction 8, result has 88.2 percent of original size [2021-05-01 07:43:34,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-05-01 07:43:34,125 INFO L142 QuantifierPusher]: treesize reduction 19, result has 59.6 percent of original size [2021-05-01 07:43:34,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:34,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:34,126 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:43:34,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:34,165 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:43:34,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:34,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:34,198 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:43:34,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:34,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:34,212 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:34,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199965069] [2021-05-01 07:43:34,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [199965069] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:34,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:34,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:43:34,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245116100] [2021-05-01 07:43:34,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:43:34,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:43:34,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-05-01 07:43:34,214 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:34,586 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-05-01 07:43:34,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-01 07:43:34,586 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 18 [2021-05-01 07:43:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:34,587 INFO L225 Difference]: With dead ends: 35 [2021-05-01 07:43:34,587 INFO L226 Difference]: Without dead ends: 29 [2021-05-01 07:43:34,587 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 532.0ms TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-05-01 07:43:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-01 07:43:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-05-01 07:43:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 3 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 07:43:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-05-01 07:43:34,592 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2021-05-01 07:43:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:34,592 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-05-01 07:43:34,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-05-01 07:43:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 07:43:34,593 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:34,593 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:34,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-05-01 07:43:34,593 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:34,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:34,593 INFO L82 PathProgramCache]: Analyzing trace with hash -678635482, now seen corresponding path program 6 times [2021-05-01 07:43:34,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:34,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004017140] [2021-05-01 07:43:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:34,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:43:34,600 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_94| 2147483648)) (<= |v_main_#t~nondet7_94| 2147483647) (not (= |v_main_#t~nondet7_94| 0)) (< v_main_~i~0_101 v_~SIZE~0_31)) InVars {~SIZE~0=v_~SIZE~0_31, main_~i~0=v_main_~i~0_101, main_#t~nondet7=|v_main_#t~nondet7_94|} OutVars{~SIZE~0=v_~SIZE~0_31, main_~i~0=v_main_~i~0_101, main_#t~nondet7=|v_main_#t~nondet7_94|} AuxVars[] AssignedVars[] [2021-05-01 07:43:34,602 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:43:34,615 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,618 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,620 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,623 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,626 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,629 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,631 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,632 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,633 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,635 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,638 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,638 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:34,642 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:34,644 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,644 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:43:34,646 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,649 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,651 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,653 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,655 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,658 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,660 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,662 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,664 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,666 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,668 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:34,669 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:43:34,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:34,702 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:43:34,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:34,703 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_96| 0) (< v_main_~i~0_103 v_~SIZE~0_32)) InVars {~SIZE~0=v_~SIZE~0_32, main_~i~0=v_main_~i~0_103, main_#t~nondet7=|v_main_#t~nondet7_96|} OutVars{~SIZE~0=v_~SIZE~0_32, main_~i~0=v_main_~i~0_103, main_#t~nondet7=|v_main_#t~nondet7_96|} AuxVars[] AssignedVars[] [2021-05-01 07:43:34,704 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:43:34,705 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,705 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,708 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,710 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,710 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:43:34,713 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:34,716 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,716 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:43:34,719 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,721 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:34,724 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,730 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,732 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,735 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,737 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,738 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,740 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,742 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,744 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,744 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:43:34,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:43:34,765 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:34,765 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:34,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:43:34,766 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:34,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:43:34,767 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:34,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:34,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:34,812 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 07:43:34,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:34,824 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-05-01 07:43:34,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 07:43:34,845 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-05-01 07:43:34,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:43:34,859 INFO L142 QuantifierPusher]: treesize reduction 90, result has 55.2 percent of original size [2021-05-01 07:43:34,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:43:34,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:34,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:34,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:34,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:34,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:34,937 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 07:43:34,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:34,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:34,941 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:43:34,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:34,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:34,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:43:34,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:43:35,029 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:43:35,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:43:35,095 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.8 percent of original size [2021-05-01 07:43:35,098 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:43:35,120 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:43:35,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:43:35,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:35,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:35,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:35,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:35,149 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-05-01 07:43:35,198 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:43:35,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:43:35,247 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-05-01 07:43:35,248 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:43:35,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:35,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:35,275 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:35,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004017140] [2021-05-01 07:43:35,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2004017140] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:35,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:35,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:43:35,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145105239] [2021-05-01 07:43:35,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:43:35,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:35,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:43:35,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-05-01 07:43:35,276 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:36,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:36,126 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-05-01 07:43:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 07:43:36,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 18 [2021-05-01 07:43:36,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:36,127 INFO L225 Difference]: With dead ends: 37 [2021-05-01 07:43:36,127 INFO L226 Difference]: Without dead ends: 29 [2021-05-01 07:43:36,127 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1041.4ms TimeCoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2021-05-01 07:43:36,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-01 07:43:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-05-01 07:43:36,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 3 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 07:43:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-05-01 07:43:36,132 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 18 [2021-05-01 07:43:36,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:36,133 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-05-01 07:43:36,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:36,133 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-05-01 07:43:36,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-05-01 07:43:36,133 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:36,133 INFO L519 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:36,133 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-05-01 07:43:36,133 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:36,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:36,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1773584474, now seen corresponding path program 7 times [2021-05-01 07:43:36,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:36,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662668188] [2021-05-01 07:43:36,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:36,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:43:36,139 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_114 v_~SIZE~0_35) (<= |v_main_#t~nondet7_107| 2147483647) (<= 0 (+ |v_main_#t~nondet7_107| 2147483648)) (not (= |v_main_#t~nondet7_107| 0))) InVars {~SIZE~0=v_~SIZE~0_35, main_~i~0=v_main_~i~0_114, main_#t~nondet7=|v_main_#t~nondet7_107|} OutVars{~SIZE~0=v_~SIZE~0_35, main_~i~0=v_main_~i~0_114, main_#t~nondet7=|v_main_#t~nondet7_107|} AuxVars[] AssignedVars[] [2021-05-01 07:43:36,141 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:43:36,143 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,144 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,146 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,148 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,149 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:36,152 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:36,154 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,155 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:43:36,157 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:36,160 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,162 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,165 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,169 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,172 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,174 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,177 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,179 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,182 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,185 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,188 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,191 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,193 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,195 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,196 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,198 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,199 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:43:36,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:36,231 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:43:36,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:36,232 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_116 v_~SIZE~0_36) (= |v_main_#t~nondet7_109| 0)) InVars {~SIZE~0=v_~SIZE~0_36, main_~i~0=v_main_~i~0_116, main_#t~nondet7=|v_main_#t~nondet7_109|} OutVars{~SIZE~0=v_~SIZE~0_36, main_~i~0=v_main_~i~0_116, main_#t~nondet7=|v_main_#t~nondet7_109|} AuxVars[] AssignedVars[] [2021-05-01 07:43:36,234 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:43:36,235 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,235 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,237 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,239 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,240 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:43:36,242 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,244 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:36,245 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:43:36,247 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:36,250 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,252 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,254 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,256 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,258 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,260 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,262 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,264 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,265 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,278 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,281 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:43:36,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:43:36,303 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:36,303 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:36,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:43:36,304 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:36,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:36,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:36,331 INFO L142 QuantifierPusher]: treesize reduction 29, result has 34.1 percent of original size [2021-05-01 07:43:36,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:43:36,337 INFO L142 QuantifierPusher]: treesize reduction 37, result has 48.6 percent of original size [2021-05-01 07:43:36,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 07:43:36,342 INFO L142 QuantifierPusher]: treesize reduction 40, result has 44.4 percent of original size [2021-05-01 07:43:36,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:43:36,356 INFO L142 QuantifierPusher]: treesize reduction 68, result has 62.0 percent of original size [2021-05-01 07:43:36,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:43:36,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:36,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:36,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:36,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:36,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,425 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:36,425 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 07:43:36,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:36,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:36,429 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:43:36,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:36,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:36,432 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.8 percent of original size [2021-05-01 07:43:36,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:43:36,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-05-01 07:43:40,509 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-01 07:43:42,570 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:43:42,573 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-05-01 07:43:42,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:42,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:42,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:43:42,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-05-01 07:43:44,696 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 67 DAG size of output: 22 [2021-05-01 07:43:44,697 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.8 percent of original size [2021-05-01 07:43:44,698 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:43:44,727 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:43:44,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:43:44,760 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-05-01 07:43:44,760 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:43:44,790 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-05-01 07:43:44,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:43:44,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:44,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:44,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:44,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:44,832 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:43:44,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:44,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:44,909 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:44,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662668188] [2021-05-01 07:43:44,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1662668188] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:44,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:44,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-05-01 07:43:44,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087021837] [2021-05-01 07:43:44,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-01 07:43:44,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:44,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-01 07:43:44,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-05-01 07:43:44,910 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:47,059 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:43:50,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:50,254 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2021-05-01 07:43:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-01 07:43:50,255 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 18 [2021-05-01 07:43:50,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:50,255 INFO L225 Difference]: With dead ends: 48 [2021-05-01 07:43:50,255 INFO L226 Difference]: Without dead ends: 38 [2021-05-01 07:43:50,256 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 7547.0ms TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 07:43:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-01 07:43:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-05-01 07:43:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 3 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 07:43:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-05-01 07:43:50,261 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 18 [2021-05-01 07:43:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:50,261 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-05-01 07:43:50,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 3 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 07:43:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-05-01 07:43:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-01 07:43:50,262 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:50,262 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:50,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-05-01 07:43:50,262 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:50,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:50,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1896989319, now seen corresponding path program 8 times [2021-05-01 07:43:50,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:50,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289001924] [2021-05-01 07:43:50,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:50,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:43:50,270 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_125 v_~SIZE~0_38) (not (= |v_main_#t~nondet7_118| 0)) (<= |v_main_#t~nondet7_118| 2147483647) (<= 0 (+ |v_main_#t~nondet7_118| 2147483648))) InVars {~SIZE~0=v_~SIZE~0_38, main_~i~0=v_main_~i~0_125, main_#t~nondet7=|v_main_#t~nondet7_118|} OutVars{~SIZE~0=v_~SIZE~0_38, main_~i~0=v_main_~i~0_125, main_#t~nondet7=|v_main_#t~nondet7_118|} AuxVars[] AssignedVars[] [2021-05-01 07:43:50,272 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:43:50,276 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,279 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,282 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,284 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,287 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,289 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,292 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,293 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,296 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,300 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,302 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,303 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:50,306 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:50,308 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,309 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:43:50,312 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,317 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,319 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,322 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,324 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,326 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,328 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:50,330 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,332 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,335 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,335 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:43:50,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:50,370 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:43:50,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:50,371 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_127 v_~SIZE~0_39) (= |v_main_#t~nondet7_120| 0)) InVars {~SIZE~0=v_~SIZE~0_39, main_~i~0=v_main_~i~0_127, main_#t~nondet7=|v_main_#t~nondet7_120|} OutVars{~SIZE~0=v_~SIZE~0_39, main_~i~0=v_main_~i~0_127, main_#t~nondet7=|v_main_#t~nondet7_120|} AuxVars[] AssignedVars[] [2021-05-01 07:43:50,374 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:43:50,377 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,378 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,380 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,382 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,382 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:43:50,385 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:50,387 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,387 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:43:50,389 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:50,392 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,404 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,407 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,409 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,412 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,414 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,416 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,418 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,419 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,421 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,423 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,423 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:43:50,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:43:50,457 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:50,457 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:50,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:43:50,458 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:50,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:43:50,459 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:50,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:50,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:50,488 INFO L142 QuantifierPusher]: treesize reduction 24, result has 44.2 percent of original size [2021-05-01 07:43:50,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:43:50,501 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-05-01 07:43:50,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 07:43:50,521 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-05-01 07:43:50,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:43:50,537 INFO L142 QuantifierPusher]: treesize reduction 56, result has 66.5 percent of original size [2021-05-01 07:43:50,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:43:50,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:50,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:50,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:50,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:50,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:50,612 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 07:43:50,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:50,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:50,615 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:43:50,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:50,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:43:50,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:43:50,711 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:43:50,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:43:50,758 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:43:50,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:50,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:50,759 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:43:50,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:50,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:50,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:50,804 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:43:50,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:50,851 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:43:50,852 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:43:50,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:43:50,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:50,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:50,892 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:43:50,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:50,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:50,917 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:43:50,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289001924] [2021-05-01 07:43:50,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [289001924] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:43:50,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:43:50,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 07:43:50,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6442851] [2021-05-01 07:43:50,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 07:43:50,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:43:50,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 07:43:50,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-05-01 07:43:50,918 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:43:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:43:51,384 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2021-05-01 07:43:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 07:43:51,385 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 20 [2021-05-01 07:43:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:43:51,385 INFO L225 Difference]: With dead ends: 39 [2021-05-01 07:43:51,385 INFO L226 Difference]: Without dead ends: 33 [2021-05-01 07:43:51,386 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 651.4ms TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2021-05-01 07:43:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-01 07:43:51,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-05-01 07:43:51,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 3 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 07:43:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-05-01 07:43:51,392 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 20 [2021-05-01 07:43:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:43:51,392 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-05-01 07:43:51,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:43:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-05-01 07:43:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-01 07:43:51,393 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:43:51,393 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:43:51,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-05-01 07:43:51,393 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:43:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:43:51,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1917995527, now seen corresponding path program 9 times [2021-05-01 07:43:51,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:43:51,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15663387] [2021-05-01 07:43:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:43:51,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:43:51,409 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_139 v_~SIZE~0_42) (<= 0 (+ |v_main_#t~nondet7_132| 2147483648)) (<= |v_main_#t~nondet7_132| 2147483647) (not (= |v_main_#t~nondet7_132| 0))) InVars {~SIZE~0=v_~SIZE~0_42, main_~i~0=v_main_~i~0_139, main_#t~nondet7=|v_main_#t~nondet7_132|} OutVars{~SIZE~0=v_~SIZE~0_42, main_~i~0=v_main_~i~0_139, main_#t~nondet7=|v_main_#t~nondet7_132|} AuxVars[] AssignedVars[] [2021-05-01 07:43:51,420 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:43:51,422 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,422 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,425 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,428 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,428 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:43:51,431 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:51,433 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,434 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:43:51,436 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:51,439 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,442 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,445 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,449 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,452 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,455 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,459 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,462 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,465 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,468 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,471 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,473 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,474 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,476 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,478 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,480 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,481 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,482 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:43:51,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:43:51,514 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:43:51,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:51,515 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_141 v_~SIZE~0_43) (= |v_main_#t~nondet7_134| 0)) InVars {~SIZE~0=v_~SIZE~0_43, main_~i~0=v_main_~i~0_141, main_#t~nondet7=|v_main_#t~nondet7_134|} OutVars{~SIZE~0=v_~SIZE~0_43, main_~i~0=v_main_~i~0_141, main_#t~nondet7=|v_main_#t~nondet7_134|} AuxVars[] AssignedVars[] [2021-05-01 07:43:51,516 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:43:51,520 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,522 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,525 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,528 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,531 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,532 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,532 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,535 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,537 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,537 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:43:51,540 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,543 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:51,543 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:43:51,545 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:43:51,547 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,550 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,553 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,555 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,557 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,559 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,560 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:43:51,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:43:51,584 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:51,585 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:51,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:43:51,586 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:43:51,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:43:51,587 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:43:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:51,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:51,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:43:51,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:43:51,621 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-05-01 07:43:51,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:43:51,627 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-05-01 07:43:51,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:43:51,648 INFO L142 QuantifierPusher]: treesize reduction 56, result has 66.5 percent of original size [2021-05-01 07:43:51,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:43:51,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:51,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:43:51,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:43:51,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:43:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:43:51,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:43:51,735 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 07:43:51,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:51,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:43:51,740 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:43:51,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:51,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:51,748 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.8 percent of original size [2021-05-01 07:43:51,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:43:51,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-05-01 07:43:55,839 WARN L205 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-01 07:43:57,911 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:43:57,913 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-05-01 07:43:57,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:43:57,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:43:57,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:43:57,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-05-01 07:44:00,735 WARN L205 SmtUtils]: Spent 2.77 s on a formula simplification. DAG size of input: 67 DAG size of output: 22 [2021-05-01 07:44:00,736 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:44:00,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:00,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:00,738 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:44:00,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:44:00,782 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:44:00,783 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:44:00,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:44:00,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:00,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:00,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:44:00,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:44:00,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:00,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:00,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:44:00,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:00,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:44:00,895 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:44:00,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15663387] [2021-05-01 07:44:00,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [15663387] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:44:00,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:44:00,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 07:44:00,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759530604] [2021-05-01 07:44:00,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 07:44:00,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:44:00,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 07:44:00,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-05-01 07:44:00,896 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:44:03,026 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:44:03,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:44:03,442 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-05-01 07:44:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 07:44:03,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 20 [2021-05-01 07:44:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:44:03,442 INFO L225 Difference]: With dead ends: 41 [2021-05-01 07:44:03,443 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 07:44:03,443 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 7496.3ms TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2021-05-01 07:44:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 07:44:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-01 07:44:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 3 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 07:44:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-05-01 07:44:03,450 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 20 [2021-05-01 07:44:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:44:03,450 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-05-01 07:44:03,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:44:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-05-01 07:44:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-01 07:44:03,451 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:44:03,451 INFO L519 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:44:03,451 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-01 07:44:03,451 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:44:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:44:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash -601964407, now seen corresponding path program 10 times [2021-05-01 07:44:03,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:44:03,452 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981614186] [2021-05-01 07:44:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:44:03,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:44:03,460 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_146| 0)) (<= |v_main_#t~nondet7_146| 2147483647) (< v_main_~i~0_153 v_~SIZE~0_46) (<= 0 (+ |v_main_#t~nondet7_146| 2147483648))) InVars {~SIZE~0=v_~SIZE~0_46, main_~i~0=v_main_~i~0_153, main_#t~nondet7=|v_main_#t~nondet7_146|} OutVars{~SIZE~0=v_~SIZE~0_46, main_~i~0=v_main_~i~0_153, main_#t~nondet7=|v_main_#t~nondet7_146|} AuxVars[] AssignedVars[] [2021-05-01 07:44:03,462 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:44:03,464 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,470 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,473 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,475 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,478 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,480 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,481 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,482 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,484 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,487 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,487 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:44:03,490 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,493 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:03,494 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:44:03,497 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,499 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,502 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,504 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,506 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,508 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,510 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,513 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,515 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,517 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:03,519 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,520 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:44:03,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:44:03,557 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:44:03,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:44:03,558 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_148| 0) (< v_main_~i~0_155 v_~SIZE~0_47)) InVars {~SIZE~0=v_~SIZE~0_47, main_~i~0=v_main_~i~0_155, main_#t~nondet7=|v_main_#t~nondet7_148|} OutVars{~SIZE~0=v_~SIZE~0_47, main_~i~0=v_main_~i~0_155, main_#t~nondet7=|v_main_#t~nondet7_148|} AuxVars[] AssignedVars[] [2021-05-01 07:44:03,559 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:44:03,562 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,565 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,568 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,571 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,573 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,574 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,574 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,576 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,578 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,579 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:44:03,582 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:03,584 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,584 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:44:03,586 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,590 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,592 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,594 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,596 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,598 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:03,599 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:44:03,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:44:03,620 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:44:03,620 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:44:03,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:44:03,621 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:44:03,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:44:03,623 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:44:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:44:03,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:44:03,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:44:03,653 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 07:44:03,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:44:03,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-05-01 07:44:03,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 07:44:03,690 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-05-01 07:44:03,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:44:03,708 INFO L142 QuantifierPusher]: treesize reduction 90, result has 55.2 percent of original size [2021-05-01 07:44:03,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:44:03,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:44:03,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:44:03,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:44:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:44:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:44:03,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:44:03,789 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 07:44:03,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:03,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:03,794 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:44:03,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:03,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:44:03,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:44:03,900 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:44:03,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:44:03,948 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:44:03,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:03,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:03,949 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:44:03,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:03,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:44:04,009 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:44:04,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:44:04,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:44:04,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:04,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:04,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:44:04,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:44:04,099 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:44:04,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:44:04,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:44:04,117 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:44:04,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981614186] [2021-05-01 07:44:04,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1981614186] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:44:04,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:44:04,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 07:44:04,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462041867] [2021-05-01 07:44:04,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 07:44:04,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:44:04,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 07:44:04,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-05-01 07:44:04,118 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:44:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:44:04,618 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-05-01 07:44:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-01 07:44:04,619 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 20 [2021-05-01 07:44:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:44:04,619 INFO L225 Difference]: With dead ends: 41 [2021-05-01 07:44:04,619 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 07:44:04,620 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 687.9ms TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2021-05-01 07:44:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 07:44:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-01 07:44:04,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 3 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 07:44:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-05-01 07:44:04,627 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 20 [2021-05-01 07:44:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:44:04,627 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-05-01 07:44:04,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:44:04,627 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-05-01 07:44:04,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-01 07:44:04,627 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:44:04,628 INFO L519 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:44:04,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-01 07:44:04,628 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:44:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:44:04,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1310183305, now seen corresponding path program 11 times [2021-05-01 07:44:04,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:44:04,628 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375578252] [2021-05-01 07:44:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:44:04,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:44:04,635 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_160| 2147483648)) (not (= |v_main_#t~nondet7_160| 0)) (< v_main_~i~0_167 v_~SIZE~0_50) (<= |v_main_#t~nondet7_160| 2147483647)) InVars {~SIZE~0=v_~SIZE~0_50, main_~i~0=v_main_~i~0_167, main_#t~nondet7=|v_main_#t~nondet7_160|} OutVars{~SIZE~0=v_~SIZE~0_50, main_~i~0=v_main_~i~0_167, main_#t~nondet7=|v_main_#t~nondet7_160|} AuxVars[] AssignedVars[] [2021-05-01 07:44:04,637 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:44:04,638 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,639 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,642 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,645 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,645 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:44:04,648 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,651 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:04,651 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:44:04,655 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,659 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,661 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,663 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,668 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,670 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,672 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,674 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,676 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:04,679 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,681 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,683 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,684 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,686 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,690 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,692 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,693 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:44:04,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:44:04,724 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:44:04,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:44:04,725 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_162| 0) (< v_main_~i~0_169 v_~SIZE~0_51)) InVars {~SIZE~0=v_~SIZE~0_51, main_~i~0=v_main_~i~0_169, main_#t~nondet7=|v_main_#t~nondet7_162|} OutVars{~SIZE~0=v_~SIZE~0_51, main_~i~0=v_main_~i~0_169, main_#t~nondet7=|v_main_#t~nondet7_162|} AuxVars[] AssignedVars[] [2021-05-01 07:44:04,726 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:44:04,727 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,727 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,729 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,731 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,731 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:44:04,734 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,736 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:04,736 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:44:04,739 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,741 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,743 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,745 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,747 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,749 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,751 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:04,753 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,754 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,756 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,757 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,759 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,759 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:44:04,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:44:04,781 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:44:04,781 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:44:04,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:44:04,782 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:44:04,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:44:04,783 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:44:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:44:04,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:44:04,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:44:04,811 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-05-01 07:44:04,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:44:04,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-05-01 07:44:04,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:44:04,842 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-05-01 07:44:04,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:44:04,860 INFO L142 QuantifierPusher]: treesize reduction 90, result has 55.2 percent of original size [2021-05-01 07:44:04,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:44:04,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:44:04,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:44:04,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:44:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:44:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:44:04,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:44:04,935 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 07:44:04,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:04,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:04,939 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:44:04,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:04,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:04,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 07:44:04,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:44:05,029 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:44:05,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:44:05,074 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.8 percent of original size [2021-05-01 07:44:05,075 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:44:05,099 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:44:05,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:44:05,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:05,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:05,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:05,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:05,130 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-05-01 07:44:05,174 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:44:05,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:44:05,209 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-05-01 07:44:05,210 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:44:05,240 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-05-01 07:44:05,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:44:05,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:05,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:05,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:05,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:05,277 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:44:05,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:05,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:44:05,328 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:44:05,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375578252] [2021-05-01 07:44:05,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [375578252] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:44:05,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:44:05,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 07:44:05,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653485694] [2021-05-01 07:44:05,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 07:44:05,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:44:05,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 07:44:05,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-05-01 07:44:05,329 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:44:06,996 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 62 [2021-05-01 07:44:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:44:07,007 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2021-05-01 07:44:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-01 07:44:07,008 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 20 [2021-05-01 07:44:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:44:07,009 INFO L225 Difference]: With dead ends: 57 [2021-05-01 07:44:07,009 INFO L226 Difference]: Without dead ends: 33 [2021-05-01 07:44:07,009 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1802.9ms TimeCoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2021-05-01 07:44:07,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-01 07:44:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-01 07:44:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 3 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 07:44:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-05-01 07:44:07,017 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 20 [2021-05-01 07:44:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:44:07,017 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-05-01 07:44:07,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:44:07,017 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-05-01 07:44:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-01 07:44:07,017 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:44:07,018 INFO L519 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:44:07,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-01 07:44:07,018 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:44:07,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:44:07,018 INFO L82 PathProgramCache]: Analyzing trace with hash 2011247883, now seen corresponding path program 12 times [2021-05-01 07:44:07,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:44:07,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633761827] [2021-05-01 07:44:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:44:07,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:44:07,023 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= |v_main_#t~nondet7_174| 2147483647) (< v_main_~i~0_181 v_~SIZE~0_54) (<= 0 (+ |v_main_#t~nondet7_174| 2147483648)) (not (= |v_main_#t~nondet7_174| 0))) InVars {~SIZE~0=v_~SIZE~0_54, main_~i~0=v_main_~i~0_181, main_#t~nondet7=|v_main_#t~nondet7_174|} OutVars{~SIZE~0=v_~SIZE~0_54, main_~i~0=v_main_~i~0_181, main_#t~nondet7=|v_main_#t~nondet7_174|} AuxVars[] AssignedVars[] [2021-05-01 07:44:07,025 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:44:07,026 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,037 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,039 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,043 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,043 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:44:07,046 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,049 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:07,049 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:44:07,052 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,055 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,057 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,059 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,061 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,063 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,065 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,068 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,070 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:07,073 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,075 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,078 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,079 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,081 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,083 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,085 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,087 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,088 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,089 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:44:07,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:44:07,126 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:44:07,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:44:07,127 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_183 v_~SIZE~0_55) (= |v_main_#t~nondet7_176| 0)) InVars {~SIZE~0=v_~SIZE~0_55, main_~i~0=v_main_~i~0_183, main_#t~nondet7=|v_main_#t~nondet7_176|} OutVars{~SIZE~0=v_~SIZE~0_55, main_~i~0=v_main_~i~0_183, main_#t~nondet7=|v_main_#t~nondet7_176|} AuxVars[] AssignedVars[] [2021-05-01 07:44:07,129 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:44:07,132 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,134 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,137 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,139 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,142 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,142 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,144 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,146 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,146 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:44:07,149 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:07,151 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,152 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:44:07,154 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,156 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,158 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,160 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,162 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,164 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:44:07,165 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,166 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:44:07,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:44:07,189 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:44:07,189 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:44:07,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:44:07,190 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:44:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:44:07,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:44:07,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:44:07,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:44:07,221 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-05-01 07:44:07,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:44:07,227 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-05-01 07:44:07,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:44:07,244 INFO L142 QuantifierPusher]: treesize reduction 140, result has 8.5 percent of original size [2021-05-01 07:44:07,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:07,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:44:07,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:44:07,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:44:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:44:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:44:07,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:44:07,302 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 07:44:07,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:07,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:07,305 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:44:07,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:07,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:07,308 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.8 percent of original size [2021-05-01 07:44:07,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:44:07,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-05-01 07:44:11,392 WARN L205 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-01 07:44:13,461 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:44:13,464 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-05-01 07:44:13,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:13,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:13,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:44:13,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-05-01 07:44:17,561 WARN L205 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-05-01 07:44:17,563 INFO L142 QuantifierPusher]: treesize reduction 16, result has 89.4 percent of original size [2021-05-01 07:44:17,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:17,567 INFO L142 QuantifierPusher]: treesize reduction 7, result has 93.5 percent of original size [2021-05-01 07:44:17,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:44:17,569 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 130 [2021-05-01 07:44:19,620 WARN L205 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 52 [2021-05-01 07:44:19,623 INFO L142 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-05-01 07:44:19,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:19,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:19,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:44:19,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-05-01 07:44:21,723 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 57 [2021-05-01 07:44:21,725 INFO L142 QuantifierPusher]: treesize reduction 8, result has 94.5 percent of original size [2021-05-01 07:44:21,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:21,727 INFO L142 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size [2021-05-01 07:44:21,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:44:21,729 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 128 [2021-05-01 07:44:23,871 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 51 [2021-05-01 07:44:23,872 INFO L142 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-05-01 07:44:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:23,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:23,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:44:23,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-05-01 07:44:25,949 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 56 [2021-05-01 07:44:25,951 INFO L142 QuantifierPusher]: treesize reduction 8, result has 94.4 percent of original size [2021-05-01 07:44:25,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:25,952 INFO L142 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size [2021-05-01 07:44:25,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:44:25,954 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.5 percent of original size 130 [2021-05-01 07:44:30,150 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 53 [2021-05-01 07:44:30,152 INFO L142 QuantifierPusher]: treesize reduction 5, result has 96.5 percent of original size [2021-05-01 07:44:30,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:30,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:30,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:44:30,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 136 [2021-05-01 07:44:36,256 WARN L205 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 58 [2021-05-01 07:44:36,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:36,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:36,260 INFO L142 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size [2021-05-01 07:44:36,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:44:36,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:44:36,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:36,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:44:36,262 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.6 percent of original size 144 [2021-05-01 07:44:40,375 WARN L205 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2021-05-01 07:44:40,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:44:40,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:44:40,377 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:44:40,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633761827] [2021-05-01 07:44:40,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [633761827] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:44:40,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:44:40,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-05-01 07:44:40,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191182790] [2021-05-01 07:44:40,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-01 07:44:40,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:44:40,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-01 07:44:40,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=278, Unknown=3, NotChecked=0, Total=342 [2021-05-01 07:44:40,378 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:44:42,682 WARN L205 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-05-01 07:44:45,357 WARN L205 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2021-05-01 07:44:47,543 WARN L205 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 83 [2021-05-01 07:44:52,055 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 84 [2021-05-01 07:44:54,155 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 88 [2021-05-01 07:44:56,407 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 89 [2021-05-01 07:45:06,216 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:45:18,423 WARN L205 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 90 [2021-05-01 07:45:20,544 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 85 [2021-05-01 07:45:32,827 WARN L205 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2021-05-01 07:45:37,013 WARN L205 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2021-05-01 07:45:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:45:37,131 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-05-01 07:45:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 07:45:37,132 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 20 [2021-05-01 07:45:37,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:45:37,132 INFO L225 Difference]: With dead ends: 45 [2021-05-01 07:45:37,133 INFO L226 Difference]: Without dead ends: 39 [2021-05-01 07:45:37,133 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 71092.1ms TimeCoverageRelationStatistics Valid=172, Invalid=875, Unknown=9, NotChecked=0, Total=1056 [2021-05-01 07:45:37,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-01 07:45:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-05-01 07:45:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 3 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 07:45:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-05-01 07:45:37,143 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 20 [2021-05-01 07:45:37,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:45:37,143 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-05-01 07:45:37,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 3 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 07:45:37,143 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-05-01 07:45:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:45:37,144 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:45:37,144 INFO L519 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:45:37,144 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-05-01 07:45:37,144 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:45:37,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:45:37,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1731518934, now seen corresponding path program 13 times [2021-05-01 07:45:37,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:45:37,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937114072] [2021-05-01 07:45:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:45:37,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:45:37,152 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_186| 2147483648)) (< v_main_~i~0_193 v_~SIZE~0_57) (<= |v_main_#t~nondet7_186| 2147483647) (not (= |v_main_#t~nondet7_186| 0))) InVars {~SIZE~0=v_~SIZE~0_57, main_~i~0=v_main_~i~0_193, main_#t~nondet7=|v_main_#t~nondet7_186|} OutVars{~SIZE~0=v_~SIZE~0_57, main_~i~0=v_main_~i~0_193, main_#t~nondet7=|v_main_#t~nondet7_186|} AuxVars[] AssignedVars[] [2021-05-01 07:45:37,154 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:45:37,158 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,161 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,164 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,167 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,170 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,174 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,177 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,178 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,178 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,181 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,183 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,184 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:45:37,187 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:45:37,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,190 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:45:37,193 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,197 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,200 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,202 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,205 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,207 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,209 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,212 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,214 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:45:37,216 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,219 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,219 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:45:37,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:45:37,259 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:45:37,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:45:37,260 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_195 v_~SIZE~0_58) (= |v_main_#t~nondet7_188| 0)) InVars {~SIZE~0=v_~SIZE~0_58, main_~i~0=v_main_~i~0_195, main_#t~nondet7=|v_main_#t~nondet7_188|} OutVars{~SIZE~0=v_~SIZE~0_58, main_~i~0=v_main_~i~0_195, main_#t~nondet7=|v_main_#t~nondet7_188|} AuxVars[] AssignedVars[] [2021-05-01 07:45:37,262 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:45:37,262 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,263 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,266 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,268 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,269 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:45:37,272 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:45:37,274 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,275 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:45:37,277 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:45:37,281 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,285 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,289 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,292 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,296 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,299 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,302 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,304 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,306 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,308 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,310 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,310 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:45:37,336 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:45:37,336 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:45:37,336 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:45:37,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:45:37,337 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:45:37,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:45:37,339 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:45:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:45:37,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:45:37,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:45:37,366 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 07:45:37,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:45:37,382 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-05-01 07:45:37,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:45:37,390 INFO L142 QuantifierPusher]: treesize reduction 31, result has 52.3 percent of original size [2021-05-01 07:45:37,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:45:37,410 INFO L142 QuantifierPusher]: treesize reduction 68, result has 62.0 percent of original size [2021-05-01 07:45:37,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:45:37,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:45:37,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:45:37,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:45:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:45:37,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:45:37,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:45:37,494 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 07:45:37,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:37,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:37,498 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:45:37,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:37,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:37,501 INFO L142 QuantifierPusher]: treesize reduction 18, result has 86.4 percent of original size [2021-05-01 07:45:37,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-05-01 07:45:37,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 119 [2021-05-01 07:45:41,608 WARN L205 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2021-05-01 07:45:43,702 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 71 [2021-05-01 07:45:43,712 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.4 percent of original size [2021-05-01 07:45:43,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:43,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:43,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-05-01 07:45:43,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-05-01 07:45:46,517 WARN L205 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-05-01 07:45:46,519 INFO L142 QuantifierPusher]: treesize reduction 40, result has 74.7 percent of original size [2021-05-01 07:45:46,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:46,522 INFO L142 QuantifierPusher]: treesize reduction 2, result has 98.1 percent of original size [2021-05-01 07:45:46,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:45:46,524 INFO L147 QuantifierPusher]: treesize reduction 2, result has 98.3 percent of original size 114 [2021-05-01 07:45:46,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:45:46,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:46,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:46,609 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:45:46,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:45:46,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:46,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:46,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:45:46,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:45:46,755 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:45:46,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:45:46,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:45:46,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:46,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:46,837 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:45:46,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:46,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:45:46,873 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:45:46,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937114072] [2021-05-01 07:45:46,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [937114072] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:45:46,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:45:46,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:45:46,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006971263] [2021-05-01 07:45:46,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:45:46,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:45:46,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:45:46,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:45:46,874 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:45:49,069 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 108 [2021-05-01 07:45:50,348 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 101 [2021-05-01 07:45:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:45:50,916 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2021-05-01 07:45:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:45:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:45:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:45:50,917 INFO L225 Difference]: With dead ends: 47 [2021-05-01 07:45:50,917 INFO L226 Difference]: Without dead ends: 41 [2021-05-01 07:45:50,917 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 9023.4ms TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:45:50,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-01 07:45:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2021-05-01 07:45:50,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 3 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 07:45:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-05-01 07:45:50,927 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 22 [2021-05-01 07:45:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:45:50,927 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-05-01 07:45:50,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:45:50,927 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2021-05-01 07:45:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:45:50,927 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:45:50,927 INFO L519 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:45:50,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-05-01 07:45:50,928 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:45:50,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:45:50,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1710512726, now seen corresponding path program 14 times [2021-05-01 07:45:50,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:45:50,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996327546] [2021-05-01 07:45:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:45:50,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:45:50,939 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_201| 0)) (<= 0 (+ |v_main_#t~nondet7_201| 2147483648)) (<= |v_main_#t~nondet7_201| 2147483647) (< v_main_~i~0_208 v_~SIZE~0_61)) InVars {~SIZE~0=v_~SIZE~0_61, main_~i~0=v_main_~i~0_208, main_#t~nondet7=|v_main_#t~nondet7_201|} OutVars{~SIZE~0=v_~SIZE~0_61, main_~i~0=v_main_~i~0_208, main_#t~nondet7=|v_main_#t~nondet7_201|} AuxVars[] AssignedVars[] [2021-05-01 07:45:50,941 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:45:50,946 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,949 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,952 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,956 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,960 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,963 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,966 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,967 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,968 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,971 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,974 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,975 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:45:50,978 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,982 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:45:50,982 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:45:50,985 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,988 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,990 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,993 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:45:50,996 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:50,999 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,002 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,004 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,007 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,009 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,012 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,013 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:45:51,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:45:51,051 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:45:51,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:45:51,053 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_210 v_~SIZE~0_62) (= |v_main_#t~nondet7_203| 0)) InVars {~SIZE~0=v_~SIZE~0_62, main_~i~0=v_main_~i~0_210, main_#t~nondet7=|v_main_#t~nondet7_203|} OutVars{~SIZE~0=v_~SIZE~0_62, main_~i~0=v_main_~i~0_210, main_#t~nondet7=|v_main_#t~nondet7_203|} AuxVars[] AssignedVars[] [2021-05-01 07:45:51,054 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:45:51,055 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,056 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,058 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,061 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,061 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:45:51,065 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:45:51,067 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,067 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:45:51,070 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,072 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,075 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,077 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,079 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,082 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:45:51,086 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,089 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,091 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,093 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,095 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,097 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,098 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:45:51,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:45:51,125 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:45:51,125 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:45:51,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:45:51,126 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:45:51,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:45:51,127 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:45:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:45:51,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:45:51,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:45:51,161 INFO L142 QuantifierPusher]: treesize reduction 24, result has 44.2 percent of original size [2021-05-01 07:45:51,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:45:51,179 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-05-01 07:45:51,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-05-01 07:45:51,188 INFO L142 QuantifierPusher]: treesize reduction 31, result has 40.4 percent of original size [2021-05-01 07:45:51,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:45:51,210 INFO L142 QuantifierPusher]: treesize reduction 89, result has 60.3 percent of original size [2021-05-01 07:45:51,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-05-01 07:45:51,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:45:51,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:45:51,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:45:51,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:45:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:45:51,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:45:51,314 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 07:45:51,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:51,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:51,318 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:45:51,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:51,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:51,321 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.8 percent of original size [2021-05-01 07:45:51,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:45:51,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-05-01 07:45:55,426 WARN L205 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-01 07:45:57,507 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:45:57,510 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-05-01 07:45:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:57,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:57,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:45:57,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-05-01 07:45:59,656 WARN L205 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 67 DAG size of output: 22 [2021-05-01 07:45:59,658 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:45:59,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:59,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:59,659 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:45:59,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:45:59,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:59,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:59,715 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:45:59,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:45:59,771 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:45:59,772 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:45:59,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:45:59,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:59,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:59,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:45:59,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:45:59,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:45:59,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:45:59,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:45:59,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:45:59,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:45:59,913 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:45:59,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996327546] [2021-05-01 07:45:59,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [996327546] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:45:59,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:45:59,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:45:59,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526506896] [2021-05-01 07:45:59,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:45:59,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:45:59,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:45:59,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:45:59,915 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:02,092 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:46:02,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:02,725 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2021-05-01 07:46:02,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:46:02,725 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:02,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:02,726 INFO L225 Difference]: With dead ends: 47 [2021-05-01 07:46:02,726 INFO L226 Difference]: Without dead ends: 41 [2021-05-01 07:46:02,726 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 7136.4ms TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:46:02,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-01 07:46:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-05-01 07:46:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 3 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 07:46:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2021-05-01 07:46:02,737 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 22 [2021-05-01 07:46:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:02,737 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2021-05-01 07:46:02,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2021-05-01 07:46:02,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:46:02,737 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:02,737 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:02,737 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-05-01 07:46:02,737 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:02,738 INFO L82 PathProgramCache]: Analyzing trace with hash 64494636, now seen corresponding path program 15 times [2021-05-01 07:46:02,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:02,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340269766] [2021-05-01 07:46:02,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:02,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:02,749 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_216| 2147483648)) (< v_main_~i~0_223 v_~SIZE~0_65) (<= |v_main_#t~nondet7_216| 2147483647) (not (= |v_main_#t~nondet7_216| 0))) InVars {~SIZE~0=v_~SIZE~0_65, main_~i~0=v_main_~i~0_223, main_#t~nondet7=|v_main_#t~nondet7_216|} OutVars{~SIZE~0=v_~SIZE~0_65, main_~i~0=v_main_~i~0_223, main_#t~nondet7=|v_main_#t~nondet7_216|} AuxVars[] AssignedVars[] [2021-05-01 07:46:02,752 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:02,758 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,762 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,766 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,770 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,774 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,778 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,782 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,783 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,784 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,787 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,790 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,791 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:02,795 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,799 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:02,799 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:02,802 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,805 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:02,808 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,811 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,815 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,819 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,822 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,825 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,828 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,831 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,835 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,835 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:02,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:02,881 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:02,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:02,883 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_218| 0) (< v_main_~i~0_225 v_~SIZE~0_66)) InVars {~SIZE~0=v_~SIZE~0_66, main_~i~0=v_main_~i~0_225, main_#t~nondet7=|v_main_#t~nondet7_218|} OutVars{~SIZE~0=v_~SIZE~0_66, main_~i~0=v_main_~i~0_225, main_#t~nondet7=|v_main_#t~nondet7_218|} AuxVars[] AssignedVars[] [2021-05-01 07:46:02,885 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:02,889 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,891 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,895 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,898 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,901 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,901 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,902 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,904 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,906 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,907 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:02,910 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:02,913 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,913 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:02,916 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,919 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,921 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,923 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,926 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,928 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,930 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:02,930 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:02,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:02,957 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:02,957 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:02,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:02,958 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:02,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:02,959 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:02,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:02,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:02,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:02,993 INFO L142 QuantifierPusher]: treesize reduction 6, result has 88.0 percent of original size [2021-05-01 07:46:02,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:46:03,013 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-05-01 07:46:03,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 07:46:03,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-05-01 07:46:03,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:46:03,072 INFO L142 QuantifierPusher]: treesize reduction 111, result has 54.9 percent of original size [2021-05-01 07:46:03,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-05-01 07:46:03,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:03,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:03,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:03,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:03,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:03,169 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 07:46:03,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:03,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:03,174 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:03,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:03,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:46:03,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:46:03,292 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:46:03,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:46:03,347 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:46:03,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:03,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:03,349 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:46:03,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:03,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:03,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:03,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:03,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:03,461 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:03,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:03,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:03,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:03,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:03,514 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:03,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:03,579 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:03,580 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:46:03,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:03,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:03,602 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:03,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340269766] [2021-05-01 07:46:03,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1340269766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:03,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:03,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:46:03,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098333449] [2021-05-01 07:46:03,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:46:03,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:03,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:46:03,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:46:03,603 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:04,272 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2021-05-01 07:46:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:46:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:04,273 INFO L225 Difference]: With dead ends: 47 [2021-05-01 07:46:04,274 INFO L226 Difference]: Without dead ends: 41 [2021-05-01 07:46:04,274 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 922.1ms TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 07:46:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-01 07:46:04,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2021-05-01 07:46:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 3 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 07:46:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-05-01 07:46:04,283 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 22 [2021-05-01 07:46:04,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:04,283 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-05-01 07:46:04,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2021-05-01 07:46:04,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:46:04,284 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:04,284 INFO L519 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:04,284 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-05-01 07:46:04,284 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1296583978, now seen corresponding path program 16 times [2021-05-01 07:46:04,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:04,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159208006] [2021-05-01 07:46:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:04,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:04,292 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_238 v_~SIZE~0_69) (<= 0 (+ |v_main_#t~nondet7_231| 2147483648)) (<= |v_main_#t~nondet7_231| 2147483647) (not (= |v_main_#t~nondet7_231| 0))) InVars {~SIZE~0=v_~SIZE~0_69, main_~i~0=v_main_~i~0_238, main_#t~nondet7=|v_main_#t~nondet7_231|} OutVars{~SIZE~0=v_~SIZE~0_69, main_~i~0=v_main_~i~0_238, main_#t~nondet7=|v_main_#t~nondet7_231|} AuxVars[] AssignedVars[] [2021-05-01 07:46:04,294 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:04,298 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,301 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,305 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,308 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,311 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,315 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,318 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,319 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,320 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,322 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,325 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,325 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:04,329 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:04,332 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,332 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:04,334 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:04,337 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,340 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,342 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,345 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,348 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,350 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,353 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,355 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,358 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,360 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,361 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:04,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:04,407 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:04,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:04,408 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_233| 0) (< v_main_~i~0_240 v_~SIZE~0_70)) InVars {~SIZE~0=v_~SIZE~0_70, main_~i~0=v_main_~i~0_240, main_#t~nondet7=|v_main_#t~nondet7_233|} OutVars{~SIZE~0=v_~SIZE~0_70, main_~i~0=v_main_~i~0_240, main_#t~nondet7=|v_main_#t~nondet7_233|} AuxVars[] AssignedVars[] [2021-05-01 07:46:04,411 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:04,412 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,413 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,415 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,417 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,418 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:04,422 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:04,425 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,425 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:04,428 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,430 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:04,435 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,438 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,441 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,448 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,450 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,452 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,454 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,456 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,458 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,458 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:04,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:04,486 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:04,487 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:04,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:04,487 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:04,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:04,488 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:04,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:04,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:04,520 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-05-01 07:46:04,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:46:04,538 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-05-01 07:46:04,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-05-01 07:46:04,546 INFO L142 QuantifierPusher]: treesize reduction 21, result has 60.4 percent of original size [2021-05-01 07:46:04,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:46:04,568 INFO L142 QuantifierPusher]: treesize reduction 102, result has 52.1 percent of original size [2021-05-01 07:46:04,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:46:04,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:04,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:04,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:04,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:04,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:04,657 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 07:46:04,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:04,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:04,661 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:04,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:04,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:04,664 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.8 percent of original size [2021-05-01 07:46:04,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:46:04,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-05-01 07:46:08,783 WARN L205 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-01 07:46:10,892 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:46:10,894 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-05-01 07:46:10,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:10,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:10,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:46:10,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-05-01 07:46:11,050 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 22 [2021-05-01 07:46:11,052 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:46:11,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:11,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:11,053 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:46:11,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:11,115 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:11,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:11,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:11,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:11,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:11,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:11,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:11,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:11,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:11,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:11,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:11,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:11,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:11,323 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:11,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:11,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:11,358 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:11,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159208006] [2021-05-01 07:46:11,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1159208006] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:11,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:11,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:46:11,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299024495] [2021-05-01 07:46:11,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:46:11,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:11,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:46:11,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:46:11,359 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:13,531 WARN L205 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:46:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:14,408 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-05-01 07:46:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:46:14,409 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:14,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:14,409 INFO L225 Difference]: With dead ends: 49 [2021-05-01 07:46:14,409 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 07:46:14,410 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 5446.1ms TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:46:14,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 07:46:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-05-01 07:46:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 3 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 07:46:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2021-05-01 07:46:14,421 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 22 [2021-05-01 07:46:14,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:14,422 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2021-05-01 07:46:14,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:14,422 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2021-05-01 07:46:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:46:14,422 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:14,422 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:14,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-05-01 07:46:14,422 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:14,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:14,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1223375956, now seen corresponding path program 17 times [2021-05-01 07:46:14,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:14,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534671447] [2021-05-01 07:46:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:14,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:14,431 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_246| 2147483648)) (< v_main_~i~0_253 v_~SIZE~0_73) (not (= |v_main_#t~nondet7_246| 0)) (<= |v_main_#t~nondet7_246| 2147483647)) InVars {~SIZE~0=v_~SIZE~0_73, main_~i~0=v_main_~i~0_253, main_#t~nondet7=|v_main_#t~nondet7_246|} OutVars{~SIZE~0=v_~SIZE~0_73, main_~i~0=v_main_~i~0_253, main_#t~nondet7=|v_main_#t~nondet7_246|} AuxVars[] AssignedVars[] [2021-05-01 07:46:14,433 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:14,434 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,434 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,438 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,440 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,441 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:14,444 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,447 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:14,447 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:14,451 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,455 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,457 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,460 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,462 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,465 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,468 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,470 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,472 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:14,476 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,479 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,482 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,484 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,487 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,489 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,491 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,493 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,495 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,496 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:14,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:14,537 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:14,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:14,538 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_248| 0) (< v_main_~i~0_255 v_~SIZE~0_74)) InVars {~SIZE~0=v_~SIZE~0_74, main_~i~0=v_main_~i~0_255, main_#t~nondet7=|v_main_#t~nondet7_248|} OutVars{~SIZE~0=v_~SIZE~0_74, main_~i~0=v_main_~i~0_255, main_#t~nondet7=|v_main_#t~nondet7_248|} AuxVars[] AssignedVars[] [2021-05-01 07:46:14,540 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:14,544 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,547 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,550 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,553 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,556 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,556 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,557 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,559 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,562 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,562 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:14,565 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,568 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:14,568 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:14,571 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,574 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,576 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,579 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,581 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,583 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,585 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:14,591 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:14,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:14,620 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:14,621 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:14,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:14,622 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:14,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:14,622 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:14,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:14,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:14,658 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 07:46:14,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:14,677 INFO L142 QuantifierPusher]: treesize reduction 28, result has 56.9 percent of original size [2021-05-01 07:46:14,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:46:14,687 INFO L142 QuantifierPusher]: treesize reduction 31, result has 52.3 percent of original size [2021-05-01 07:46:14,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:46:14,710 INFO L142 QuantifierPusher]: treesize reduction 68, result has 62.0 percent of original size [2021-05-01 07:46:14,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:46:14,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:14,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:14,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:14,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:14,814 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 07:46:14,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:14,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:14,818 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:14,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:14,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:14,822 INFO L142 QuantifierPusher]: treesize reduction 11, result has 91.8 percent of original size [2021-05-01 07:46:14,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-05-01 07:46:14,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-05-01 07:46:17,265 WARN L205 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-05-01 07:46:18,736 WARN L205 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 77 [2021-05-01 07:46:18,739 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.7 percent of original size [2021-05-01 07:46:18,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:18,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:18,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-05-01 07:46:18,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-05-01 07:46:22,669 WARN L205 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2021-05-01 07:46:22,671 INFO L142 QuantifierPusher]: treesize reduction 40, result has 76.0 percent of original size [2021-05-01 07:46:22,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:22,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:22,684 INFO L147 QuantifierPusher]: treesize reduction 3, result has 97.4 percent of original size 112 [2021-05-01 07:46:22,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:22,761 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:22,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:22,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:22,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:22,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:22,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:22,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:22,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:22,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:22,879 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:22,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:22,947 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:22,947 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:46:22,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:22,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:22,972 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:22,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534671447] [2021-05-01 07:46:22,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1534671447] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:22,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:22,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:46:22,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639640492] [2021-05-01 07:46:22,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:46:22,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:22,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:46:22,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:46:22,973 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:24,878 WARN L205 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 114 [2021-05-01 07:46:26,957 WARN L205 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 107 [2021-05-01 07:46:27,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:27,620 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-05-01 07:46:27,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:46:27,621 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:27,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:27,621 INFO L225 Difference]: With dead ends: 49 [2021-05-01 07:46:27,621 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 07:46:27,622 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 10122.3ms TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:46:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 07:46:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-05-01 07:46:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 3 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 07:46:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2021-05-01 07:46:27,633 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 22 [2021-05-01 07:46:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:27,633 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2021-05-01 07:46:27,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:27,633 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2021-05-01 07:46:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:46:27,634 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:27,634 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:27,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-05-01 07:46:27,634 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:27,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:27,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1976642348, now seen corresponding path program 18 times [2021-05-01 07:46:27,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:27,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704390576] [2021-05-01 07:46:27,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:27,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:27,643 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_261| 0)) (< v_main_~i~0_268 v_~SIZE~0_77) (<= 0 (+ |v_main_#t~nondet7_261| 2147483648)) (<= |v_main_#t~nondet7_261| 2147483647)) InVars {~SIZE~0=v_~SIZE~0_77, main_~i~0=v_main_~i~0_268, main_#t~nondet7=|v_main_#t~nondet7_261|} OutVars{~SIZE~0=v_~SIZE~0_77, main_~i~0=v_main_~i~0_268, main_#t~nondet7=|v_main_#t~nondet7_261|} AuxVars[] AssignedVars[] [2021-05-01 07:46:27,645 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:27,647 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,647 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,651 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,656 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,657 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:27,661 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:27,664 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,665 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:27,669 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,672 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:27,677 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,682 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,688 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,692 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,697 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,702 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,706 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,710 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,714 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,718 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,720 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,723 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,726 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,729 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,732 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,736 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:27,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:27,787 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:27,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:27,788 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_270 v_~SIZE~0_78) (= |v_main_#t~nondet7_263| 0)) InVars {~SIZE~0=v_~SIZE~0_78, main_~i~0=v_main_~i~0_270, main_#t~nondet7=|v_main_#t~nondet7_263|} OutVars{~SIZE~0=v_~SIZE~0_78, main_~i~0=v_main_~i~0_270, main_#t~nondet7=|v_main_#t~nondet7_263|} AuxVars[] AssignedVars[] [2021-05-01 07:46:27,792 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:27,793 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,794 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,797 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,800 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,800 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:27,804 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,808 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:27,808 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:27,811 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:27,815 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,821 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,825 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,829 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,833 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,837 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,839 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,842 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,844 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,847 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,850 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,851 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:27,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:27,883 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:27,884 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:27,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:27,885 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:27,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:27,886 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:27,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:27,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:27,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:27,920 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-05-01 07:46:27,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:46:27,949 INFO L142 QuantifierPusher]: treesize reduction 18, result has 60.0 percent of original size [2021-05-01 07:46:27,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-05-01 07:46:27,982 INFO L142 QuantifierPusher]: treesize reduction 19, result has 52.5 percent of original size [2021-05-01 07:46:27,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:28,005 INFO L142 QuantifierPusher]: treesize reduction 111, result has 54.9 percent of original size [2021-05-01 07:46:28,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-05-01 07:46:28,064 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:28,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:28,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:28,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:28,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:28,125 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 07:46:28,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:28,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:28,130 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:28,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:28,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 07:46:28,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:46:28,280 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:46:28,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:46:28,352 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:46:28,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:28,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:28,354 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:46:28,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:28,423 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:28,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:28,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:28,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:28,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:28,482 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:28,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:28,552 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:28,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:28,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:28,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:28,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:28,632 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:28,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:28,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:28,671 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:28,671 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704390576] [2021-05-01 07:46:28,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1704390576] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:28,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:28,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:46:28,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862389601] [2021-05-01 07:46:28,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:46:28,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:28,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:46:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:46:28,672 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:29,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:29,472 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2021-05-01 07:46:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:46:29,473 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:29,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:29,473 INFO L225 Difference]: With dead ends: 49 [2021-05-01 07:46:29,473 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 07:46:29,474 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1155.8ms TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 07:46:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 07:46:29,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-05-01 07:46:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 36 states have internal predecessors, (50), 3 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 07:46:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2021-05-01 07:46:29,485 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 22 [2021-05-01 07:46:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:29,485 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2021-05-01 07:46:29,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:29,485 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2021-05-01 07:46:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:46:29,486 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:29,486 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:29,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-05-01 07:46:29,486 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:29,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:29,486 INFO L82 PathProgramCache]: Analyzing trace with hash -543317586, now seen corresponding path program 19 times [2021-05-01 07:46:29,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:29,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140602945] [2021-05-01 07:46:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:29,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:29,497 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_283 v_~SIZE~0_81) (<= |v_main_#t~nondet7_276| 2147483647) (<= 0 (+ |v_main_#t~nondet7_276| 2147483648)) (not (= |v_main_#t~nondet7_276| 0))) InVars {~SIZE~0=v_~SIZE~0_81, main_~i~0=v_main_~i~0_283, main_#t~nondet7=|v_main_#t~nondet7_276|} OutVars{~SIZE~0=v_~SIZE~0_81, main_~i~0=v_main_~i~0_283, main_#t~nondet7=|v_main_#t~nondet7_276|} AuxVars[] AssignedVars[] [2021-05-01 07:46:29,499 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:29,504 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,508 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,513 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,517 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,522 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,526 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,529 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,530 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,531 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,534 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,538 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,538 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:29,543 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,547 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:29,548 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:29,550 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:29,553 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,558 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,561 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,564 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,568 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,571 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,574 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,578 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,581 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,584 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,585 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:29,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:29,635 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:29,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:29,637 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_285 v_~SIZE~0_82) (= |v_main_#t~nondet7_278| 0)) InVars {~SIZE~0=v_~SIZE~0_82, main_~i~0=v_main_~i~0_285, main_#t~nondet7=|v_main_#t~nondet7_278|} OutVars{~SIZE~0=v_~SIZE~0_82, main_~i~0=v_main_~i~0_285, main_#t~nondet7=|v_main_#t~nondet7_278|} AuxVars[] AssignedVars[] [2021-05-01 07:46:29,638 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:29,643 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,647 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,651 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,656 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,659 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,660 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,660 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,663 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,666 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:29,669 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,673 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:29,674 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:29,676 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:29,681 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,685 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,687 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,690 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,693 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,695 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,696 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:29,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:29,730 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:29,730 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:29,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:29,731 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:29,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:29,732 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:29,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:29,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:29,768 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-05-01 07:46:29,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:29,799 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-05-01 07:46:29,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 07:46:29,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-05-01 07:46:29,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:46:29,864 INFO L142 QuantifierPusher]: treesize reduction 90, result has 55.2 percent of original size [2021-05-01 07:46:29,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:46:29,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:29,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:29,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:29,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:29,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:29,999 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 07:46:30,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:30,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:30,003 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:30,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:30,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:46:30,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:46:30,148 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:46:30,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:46:30,222 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:46:30,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:30,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:30,224 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:46:30,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:30,295 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:30,296 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:46:30,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:30,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:30,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:30,357 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:30,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:30,430 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:30,430 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:46:30,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:30,495 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:30,496 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:46:30,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:30,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:30,522 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:30,522 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140602945] [2021-05-01 07:46:30,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [2140602945] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:30,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:30,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:46:30,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381215563] [2021-05-01 07:46:30,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:46:30,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:30,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:46:30,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:46:30,523 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:31,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:31,353 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-05-01 07:46:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:46:31,354 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:31,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:31,355 INFO L225 Difference]: With dead ends: 51 [2021-05-01 07:46:31,355 INFO L226 Difference]: Without dead ends: 45 [2021-05-01 07:46:31,355 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1165.7ms TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-05-01 07:46:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-05-01 07:46:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-05-01 07:46:31,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 3 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 07:46:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2021-05-01 07:46:31,366 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 22 [2021-05-01 07:46:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:31,366 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2021-05-01 07:46:31,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2021-05-01 07:46:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:46:31,366 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:31,367 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:31,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-05-01 07:46:31,367 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:31,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1617260370, now seen corresponding path program 20 times [2021-05-01 07:46:31,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:31,367 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150708608] [2021-05-01 07:46:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:31,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:31,390 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_291| 0)) (<= |v_main_#t~nondet7_291| 2147483647) (<= 0 (+ |v_main_#t~nondet7_291| 2147483648)) (< v_main_~i~0_298 v_~SIZE~0_85)) InVars {~SIZE~0=v_~SIZE~0_85, main_~i~0=v_main_~i~0_298, main_#t~nondet7=|v_main_#t~nondet7_291|} OutVars{~SIZE~0=v_~SIZE~0_85, main_~i~0=v_main_~i~0_298, main_#t~nondet7=|v_main_#t~nondet7_291|} AuxVars[] AssignedVars[] [2021-05-01 07:46:31,392 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:31,393 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,393 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,397 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,400 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,401 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:31,405 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,410 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:31,411 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:31,416 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,421 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,425 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,430 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,433 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,436 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,439 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,443 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,446 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,449 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,452 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:31,455 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,458 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,461 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,464 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,467 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,470 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,472 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,473 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:31,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:31,537 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:31,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:31,539 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_293| 0) (< v_main_~i~0_300 v_~SIZE~0_86)) InVars {~SIZE~0=v_~SIZE~0_86, main_~i~0=v_main_~i~0_300, main_#t~nondet7=|v_main_#t~nondet7_293|} OutVars{~SIZE~0=v_~SIZE~0_86, main_~i~0=v_main_~i~0_300, main_#t~nondet7=|v_main_#t~nondet7_293|} AuxVars[] AssignedVars[] [2021-05-01 07:46:31,541 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:31,542 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,543 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,546 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,549 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,550 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:31,554 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,557 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:31,558 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:31,562 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,565 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:31,571 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,575 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,579 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,583 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,591 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,596 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,599 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,601 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,602 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:31,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:31,637 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:31,637 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:31,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:31,638 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:31,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:31,639 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:31,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:31,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:31,669 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-05-01 07:46:31,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:46:31,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:46:31,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:46:31,722 INFO L142 QuantifierPusher]: treesize reduction 64, result has 76.6 percent of original size [2021-05-01 07:46:31,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-05-01 07:46:31,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:31,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:31,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:31,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:31,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:31,850 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 07:46:31,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:31,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:31,855 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:31,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:31,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:31,859 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.8 percent of original size [2021-05-01 07:46:31,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:46:31,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-05-01 07:46:35,988 WARN L205 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-01 07:46:38,091 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:46:38,093 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-05-01 07:46:38,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:38,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:46:38,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-05-01 07:46:38,251 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 22 [2021-05-01 07:46:38,253 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:46:38,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:38,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:38,254 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:46:38,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:38,321 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:38,321 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:46:38,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:38,378 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:38,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:38,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:38,446 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:38,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:38,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:38,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:38,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:38,523 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:38,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:38,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:38,567 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:38,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150708608] [2021-05-01 07:46:38,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [150708608] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:38,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:38,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:46:38,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741144681] [2021-05-01 07:46:38,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:46:38,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:38,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:46:38,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-05-01 07:46:38,569 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:40,770 WARN L205 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 104 [2021-05-01 07:46:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:41,555 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2021-05-01 07:46:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-01 07:46:41,556 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:41,556 INFO L225 Difference]: With dead ends: 53 [2021-05-01 07:46:41,556 INFO L226 Difference]: Without dead ends: 47 [2021-05-01 07:46:41,557 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 5369.4ms TimeCoverageRelationStatistics Valid=163, Invalid=893, Unknown=0, NotChecked=0, Total=1056 [2021-05-01 07:46:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-01 07:46:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2021-05-01 07:46:41,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 3 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 07:46:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2021-05-01 07:46:41,568 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 22 [2021-05-01 07:46:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:41,568 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2021-05-01 07:46:41,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2021-05-01 07:46:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:46:41,568 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:41,568 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:41,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-05-01 07:46:41,568 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:41,569 INFO L82 PathProgramCache]: Analyzing trace with hash 696778670, now seen corresponding path program 21 times [2021-05-01 07:46:41,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:41,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379663145] [2021-05-01 07:46:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:41,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:41,581 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_306| 0)) (< v_main_~i~0_313 v_~SIZE~0_89) (<= |v_main_#t~nondet7_306| 2147483647) (<= 0 (+ |v_main_#t~nondet7_306| 2147483648))) InVars {~SIZE~0=v_~SIZE~0_89, main_~i~0=v_main_~i~0_313, main_#t~nondet7=|v_main_#t~nondet7_306|} OutVars{~SIZE~0=v_~SIZE~0_89, main_~i~0=v_main_~i~0_313, main_#t~nondet7=|v_main_#t~nondet7_306|} AuxVars[] AssignedVars[] [2021-05-01 07:46:41,584 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:41,588 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,592 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,596 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,601 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,605 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,609 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,614 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,615 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,615 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,619 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,622 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,623 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:41,627 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:41,631 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,631 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:41,635 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,637 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:41,640 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,644 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,648 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,651 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,654 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,658 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,661 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,665 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,668 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,669 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:41,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:41,726 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:41,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:41,728 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_308| 0) (< v_main_~i~0_315 v_~SIZE~0_90)) InVars {~SIZE~0=v_~SIZE~0_90, main_~i~0=v_main_~i~0_315, main_#t~nondet7=|v_main_#t~nondet7_308|} OutVars{~SIZE~0=v_~SIZE~0_90, main_~i~0=v_main_~i~0_315, main_#t~nondet7=|v_main_#t~nondet7_308|} AuxVars[] AssignedVars[] [2021-05-01 07:46:41,729 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:41,730 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,730 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,734 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,738 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,738 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:41,744 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:41,747 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,748 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:41,752 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,756 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,760 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,764 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,768 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,773 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,776 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:41,779 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,783 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,786 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,790 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,794 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,795 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:41,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:41,837 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:41,837 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:41,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:41,839 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:41,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:41,840 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:41,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:41,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:41,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:41,883 INFO L142 QuantifierPusher]: treesize reduction 46, result has 24.6 percent of original size [2021-05-01 07:46:41,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:46:41,896 INFO L142 QuantifierPusher]: treesize reduction 9, result has 74.3 percent of original size [2021-05-01 07:46:41,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-05-01 07:46:41,930 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-05-01 07:46:41,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:41,956 INFO L142 QuantifierPusher]: treesize reduction 56, result has 67.3 percent of original size [2021-05-01 07:46:41,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-05-01 07:46:42,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:42,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:42,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:42,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:42,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:42,063 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 07:46:42,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:42,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:42,068 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:42,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:42,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 07:46:42,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:46:42,206 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:46:42,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:46:42,278 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.8 percent of original size [2021-05-01 07:46:42,279 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:46:42,317 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:46:42,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:46:42,364 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-05-01 07:46:42,365 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:46:42,407 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-05-01 07:46:42,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:46:42,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:42,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:42,459 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:46:42,535 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-05-01 07:46:42,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:46:42,592 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-05-01 07:46:42,593 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:46:42,646 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:46:42,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:46:42,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:42,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:42,713 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-05-01 07:46:42,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:42,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:42,806 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:42,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379663145] [2021-05-01 07:46:42,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [379663145] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:42,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:42,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:46:42,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508320437] [2021-05-01 07:46:42,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:46:42,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:42,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:46:42,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:46:42,807 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:44,063 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2021-05-01 07:46:44,226 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-05-01 07:46:44,658 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2021-05-01 07:46:44,820 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2021-05-01 07:46:44,971 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-05-01 07:46:45,178 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-05-01 07:46:45,330 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-05-01 07:46:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:45,548 INFO L93 Difference]: Finished difference Result 71 states and 94 transitions. [2021-05-01 07:46:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-01 07:46:45,549 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:45,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:45,550 INFO L225 Difference]: With dead ends: 71 [2021-05-01 07:46:45,550 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 07:46:45,551 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 3077.5ms TimeCoverageRelationStatistics Valid=362, Invalid=1708, Unknown=0, NotChecked=0, Total=2070 [2021-05-01 07:46:45,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 07:46:45,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-01 07:46:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 states have internal predecessors, (38), 3 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 07:46:45,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-05-01 07:46:45,560 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2021-05-01 07:46:45,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:45,560 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-05-01 07:46:45,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:45,560 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-05-01 07:46:45,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-01 07:46:45,560 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:45,560 INFO L519 BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:45,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-05-01 07:46:45,561 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:45,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:45,561 INFO L82 PathProgramCache]: Analyzing trace with hash 717784878, now seen corresponding path program 22 times [2021-05-01 07:46:45,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:45,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297424762] [2021-05-01 07:46:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:45,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:45,571 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= |v_main_#t~nondet7_321| 2147483647) (<= 0 (+ |v_main_#t~nondet7_321| 2147483648)) (not (= |v_main_#t~nondet7_321| 0)) (< v_main_~i~0_328 v_~SIZE~0_93)) InVars {~SIZE~0=v_~SIZE~0_93, main_~i~0=v_main_~i~0_328, main_#t~nondet7=|v_main_#t~nondet7_321|} OutVars{~SIZE~0=v_~SIZE~0_93, main_~i~0=v_main_~i~0_328, main_#t~nondet7=|v_main_#t~nondet7_321|} AuxVars[] AssignedVars[] [2021-05-01 07:46:45,573 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:45,578 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,581 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,585 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,590 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,594 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,598 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,603 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,604 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,605 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,609 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,612 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,613 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:45,618 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:45,621 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,622 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:45,626 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,629 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,633 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,637 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,640 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,643 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,647 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,650 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,654 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,657 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,660 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:45,660 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:45,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:45,713 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:45,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:45,714 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_330 v_~SIZE~0_94) (= |v_main_#t~nondet7_323| 0)) InVars {~SIZE~0=v_~SIZE~0_94, main_~i~0=v_main_~i~0_330, main_#t~nondet7=|v_main_#t~nondet7_323|} OutVars{~SIZE~0=v_~SIZE~0_94, main_~i~0=v_main_~i~0_330, main_#t~nondet7=|v_main_#t~nondet7_323|} AuxVars[] AssignedVars[] [2021-05-01 07:46:45,715 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:45,719 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,722 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,726 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,731 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,736 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,736 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,740 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,743 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,743 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:45,747 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:45,751 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,751 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:45,755 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,758 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,761 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,764 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,767 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,770 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:45,773 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,773 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:45,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:45,809 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:45,809 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:45,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:45,810 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:45,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:45,811 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:45,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:45,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:45,841 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-05-01 07:46:45,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:46:45,866 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-05-01 07:46:45,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:46:45,901 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-05-01 07:46:45,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:46:45,928 INFO L142 QuantifierPusher]: treesize reduction 90, result has 55.2 percent of original size [2021-05-01 07:46:45,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-05-01 07:46:45,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:45,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:45,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:46,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:46,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:46,051 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 07:46:46,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:46,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:46,057 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:46,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:46,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 07:46:46,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:46:46,200 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:46:46,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:46:46,275 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.8 percent of original size [2021-05-01 07:46:46,276 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:46:46,318 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:46:46,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:46:46,374 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-05-01 07:46:46,374 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:46:46,420 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-05-01 07:46:46,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:46:46,471 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-05-01 07:46:46,472 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:46:46,524 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:46:46,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:46:46,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:46,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:46,586 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-05-01 07:46:46,667 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:46:46,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:46:46,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:46,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:46,736 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-05-01 07:46:46,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:46,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:46,824 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:46,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297424762] [2021-05-01 07:46:46,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [297424762] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:46,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:46,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-05-01 07:46:46,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215549985] [2021-05-01 07:46:46,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-01 07:46:46,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:46,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-01 07:46:46,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-05-01 07:46:46,825 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:48,024 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-05-01 07:46:48,332 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2021-05-01 07:46:48,495 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-05-01 07:46:48,677 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2021-05-01 07:46:49,010 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2021-05-01 07:46:49,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:46:49,087 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2021-05-01 07:46:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-01 07:46:49,088 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 22 [2021-05-01 07:46:49,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:46:49,088 INFO L225 Difference]: With dead ends: 59 [2021-05-01 07:46:49,088 INFO L226 Difference]: Without dead ends: 49 [2021-05-01 07:46:49,089 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 2702.5ms TimeCoverageRelationStatistics Valid=337, Invalid=1469, Unknown=0, NotChecked=0, Total=1806 [2021-05-01 07:46:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-01 07:46:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2021-05-01 07:46:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 3 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 07:46:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-05-01 07:46:49,100 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2021-05-01 07:46:49,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:46:49,100 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-05-01 07:46:49,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 16 states have internal predecessors, (18), 3 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 07:46:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-05-01 07:46:49,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-01 07:46:49,100 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:46:49,100 INFO L519 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:46:49,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-05-01 07:46:49,100 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:46:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:46:49,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1800597903, now seen corresponding path program 23 times [2021-05-01 07:46:49,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:46:49,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856711441] [2021-05-01 07:46:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:46:49,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:46:49,109 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_336| 0)) (<= |v_main_#t~nondet7_336| 2147483647) (< v_main_~i~0_343 v_~SIZE~0_97) (<= 0 (+ |v_main_#t~nondet7_336| 2147483648))) InVars {~SIZE~0=v_~SIZE~0_97, main_~i~0=v_main_~i~0_343, main_#t~nondet7=|v_main_#t~nondet7_336|} OutVars{~SIZE~0=v_~SIZE~0_97, main_~i~0=v_main_~i~0_343, main_#t~nondet7=|v_main_#t~nondet7_336|} AuxVars[] AssignedVars[] [2021-05-01 07:46:49,111 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:46:49,112 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,113 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,117 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,120 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,121 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:49,125 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:49,129 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,130 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:46:49,138 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,144 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,148 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,151 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,154 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,158 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,163 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,167 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,170 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:49,174 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,177 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,180 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,184 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,187 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,190 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,193 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,197 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,198 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:46:49,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:46:49,250 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:46:49,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:49,251 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_338| 0) (< v_main_~i~0_345 v_~SIZE~0_98)) InVars {~SIZE~0=v_~SIZE~0_98, main_~i~0=v_main_~i~0_345, main_#t~nondet7=|v_main_#t~nondet7_338|} OutVars{~SIZE~0=v_~SIZE~0_98, main_~i~0=v_main_~i~0_345, main_#t~nondet7=|v_main_#t~nondet7_338|} AuxVars[] AssignedVars[] [2021-05-01 07:46:49,252 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:46:49,257 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,261 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,265 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,269 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,272 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,272 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,273 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,276 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,279 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,279 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:46:49,284 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,287 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:49,288 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:46:49,291 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,294 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:46:49,298 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,301 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,304 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,308 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,310 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,311 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:46:49,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:46:49,347 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:49,347 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:49,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:46:49,348 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:46:49,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:46:49,349 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:46:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:49,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:49,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:49,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-05-01 07:46:49,397 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-05-01 07:46:49,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:46:49,409 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.2 percent of original size [2021-05-01 07:46:49,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-05-01 07:46:49,437 INFO L142 QuantifierPusher]: treesize reduction 140, result has 8.5 percent of original size [2021-05-01 07:46:49,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:49,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:49,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:46:49,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:49,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:46:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:46:49,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:46:49,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:46:49,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:49,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:49,526 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:46:49,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:49,529 INFO L142 QuantifierPusher]: treesize reduction 15, result has 87.8 percent of original size [2021-05-01 07:46:49,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:46:49,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-05-01 07:46:53,666 WARN L205 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-05-01 07:46:55,779 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 66 [2021-05-01 07:46:55,782 INFO L142 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-05-01 07:46:55,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:55,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:55,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-05-01 07:46:55,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-05-01 07:46:57,972 WARN L205 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 67 DAG size of output: 22 [2021-05-01 07:46:57,973 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:46:57,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:57,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:57,975 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:46:58,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:58,047 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:58,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:46:58,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:58,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:58,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:58,111 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:58,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:58,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:58,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:58,191 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:46:58,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:58,273 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:46:58,274 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:46:58,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:46:58,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:46:58,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:46:58,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:46:58,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:46:58,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:46:58,416 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:46:58,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856711441] [2021-05-01 07:46:58,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [856711441] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:46:58,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:46:58,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 07:46:58,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084985534] [2021-05-01 07:46:58,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 07:46:58,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:46:58,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 07:46:58,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-05-01 07:46:58,418 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 07:47:02,759 WARN L205 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2021-05-01 07:47:03,217 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-05-01 07:47:04,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:47:04,094 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2021-05-01 07:47:04,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 07:47:04,095 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 24 [2021-05-01 07:47:04,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:47:04,096 INFO L225 Difference]: With dead ends: 47 [2021-05-01 07:47:04,096 INFO L226 Difference]: Without dead ends: 41 [2021-05-01 07:47:04,097 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 10101.9ms TimeCoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2021-05-01 07:47:04,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-01 07:47:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2021-05-01 07:47:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 3 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 07:47:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2021-05-01 07:47:04,108 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 24 [2021-05-01 07:47:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:47:04,108 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2021-05-01 07:47:04,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 07:47:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2021-05-01 07:47:04,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-01 07:47:04,109 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:47:04,109 INFO L519 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:47:04,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-05-01 07:47:04,109 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:47:04,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:47:04,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1821604111, now seen corresponding path program 24 times [2021-05-01 07:47:04,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:47:04,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64684449] [2021-05-01 07:47:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:47:04,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:47:04,125 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_359 v_~SIZE~0_101) (not (= |v_main_#t~nondet7_352| 0)) (<= 0 (+ |v_main_#t~nondet7_352| 2147483648)) (<= |v_main_#t~nondet7_352| 2147483647)) InVars {~SIZE~0=v_~SIZE~0_101, main_~i~0=v_main_~i~0_359, main_#t~nondet7=|v_main_#t~nondet7_352|} OutVars{~SIZE~0=v_~SIZE~0_101, main_~i~0=v_main_~i~0_359, main_#t~nondet7=|v_main_#t~nondet7_352|} AuxVars[] AssignedVars[] [2021-05-01 07:47:04,127 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:47:04,128 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,129 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,133 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,136 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,137 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:47:04,141 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,146 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:04,146 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:47:04,149 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:04,154 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,159 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,163 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,169 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,174 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,179 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,184 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,189 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,194 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,199 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,202 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,206 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,209 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,212 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,216 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,219 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,222 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,223 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:47:04,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:47:04,284 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:47:04,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:47:04,286 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_354| 0) (< v_main_~i~0_361 v_~SIZE~0_102)) InVars {~SIZE~0=v_~SIZE~0_102, main_~i~0=v_main_~i~0_361, main_#t~nondet7=|v_main_#t~nondet7_354|} OutVars{~SIZE~0=v_~SIZE~0_102, main_~i~0=v_main_~i~0_361, main_#t~nondet7=|v_main_#t~nondet7_354|} AuxVars[] AssignedVars[] [2021-05-01 07:47:04,287 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:47:04,288 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,289 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,292 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,296 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,296 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:47:04,301 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,305 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:04,305 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:47:04,310 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,313 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:04,318 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,323 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,328 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,332 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,337 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,341 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,344 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,347 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,350 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,353 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,353 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:47:04,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:47:04,393 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:47:04,393 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:47:04,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:47:04,394 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:47:04,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:47:04,396 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:47:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:47:04,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:47:04,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:47:04,433 INFO L142 QuantifierPusher]: treesize reduction 4, result has 89.2 percent of original size [2021-05-01 07:47:04,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-05-01 07:47:04,463 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-05-01 07:47:04,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 07:47:04,498 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-05-01 07:47:04,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:47:04,526 INFO L142 QuantifierPusher]: treesize reduction 111, result has 54.9 percent of original size [2021-05-01 07:47:04,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-05-01 07:47:04,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:47:04,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:47:04,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:47:04,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:47:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:47:04,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:47:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 07:47:04,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:04,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:04,651 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:47:04,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:04,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:47:04,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:47:04,756 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 30 [2021-05-01 07:47:04,812 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:47:04,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:47:04,941 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:47:04,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:04,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:04,943 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-05-01 07:47:04,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:04,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:05,022 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:47:05,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:47:05,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:05,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:05,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:05,091 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:47:05,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:05,174 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:47:05,175 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:47:05,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:05,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:05,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:05,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:47:05,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:05,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:05,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:05,352 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:47:05,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:05,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:47:05,402 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:47:05,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64684449] [2021-05-01 07:47:05,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [64684449] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:47:05,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:47:05,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 07:47:05,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260616806] [2021-05-01 07:47:05,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 07:47:05,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:47:05,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 07:47:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-05-01 07:47:05,403 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 07:47:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:47:06,491 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-05-01 07:47:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 07:47:06,492 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 24 [2021-05-01 07:47:06,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:47:06,492 INFO L225 Difference]: With dead ends: 49 [2021-05-01 07:47:06,492 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 07:47:06,493 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1560.7ms TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2021-05-01 07:47:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 07:47:06,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-05-01 07:47:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 3 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 07:47:06,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-05-01 07:47:06,506 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 24 [2021-05-01 07:47:06,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:47:06,506 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-05-01 07:47:06,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 07:47:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-05-01 07:47:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-01 07:47:06,506 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:47:06,506 INFO L519 BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:47:06,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-05-01 07:47:06,506 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:47:06,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:47:06,507 INFO L82 PathProgramCache]: Analyzing trace with hash -698355823, now seen corresponding path program 25 times [2021-05-01 07:47:06,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:47:06,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864787692] [2021-05-01 07:47:06,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:47:06,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:47:06,516 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_368| 2147483648)) (not (= |v_main_#t~nondet7_368| 0)) (<= |v_main_#t~nondet7_368| 2147483647) (< v_main_~i~0_375 v_~SIZE~0_105)) InVars {~SIZE~0=v_~SIZE~0_105, main_~i~0=v_main_~i~0_375, main_#t~nondet7=|v_main_#t~nondet7_368|} OutVars{~SIZE~0=v_~SIZE~0_105, main_~i~0=v_main_~i~0_375, main_#t~nondet7=|v_main_#t~nondet7_368|} AuxVars[] AssignedVars[] [2021-05-01 07:47:06,526 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:47:06,528 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,528 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,533 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,537 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,537 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:47:06,542 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,547 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:06,548 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:47:06,552 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,557 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,561 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,565 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,568 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,572 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,576 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,579 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,584 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,589 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,592 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:06,595 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,599 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,603 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,606 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,610 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,614 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,617 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,618 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:47:06,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:47:06,681 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:47:06,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:47:06,683 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (= |v_main_#t~nondet7_370| 0) (< v_main_~i~0_377 v_~SIZE~0_106)) InVars {~SIZE~0=v_~SIZE~0_106, main_~i~0=v_main_~i~0_377, main_#t~nondet7=|v_main_#t~nondet7_370|} OutVars{~SIZE~0=v_~SIZE~0_106, main_~i~0=v_main_~i~0_377, main_#t~nondet7=|v_main_#t~nondet7_370|} AuxVars[] AssignedVars[] [2021-05-01 07:47:06,685 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:47:06,690 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,694 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,699 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,703 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,706 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,707 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,708 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,711 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,714 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,715 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:47:06,720 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:06,723 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,724 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:47:06,727 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,730 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:06,735 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,739 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,743 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,746 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,749 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,750 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:47:06,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:47:06,790 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:47:06,791 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:47:06,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:47:06,792 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:47:06,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:47:06,793 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:47:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:47:06,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:47:06,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:47:06,833 INFO L142 QuantifierPusher]: treesize reduction 4, result has 82.6 percent of original size [2021-05-01 07:47:06,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-05-01 07:47:06,858 INFO L142 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size [2021-05-01 07:47:06,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-05-01 07:47:06,898 INFO L142 QuantifierPusher]: treesize reduction 9, result has 78.0 percent of original size [2021-05-01 07:47:06,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:47:06,929 INFO L142 QuantifierPusher]: treesize reduction 74, result has 63.5 percent of original size [2021-05-01 07:47:06,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-05-01 07:47:06,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:06,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:47:07,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:47:07,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:47:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:47:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:47:07,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:47:07,063 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 07:47:07,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:07,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:07,068 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:47:07,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:07,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-05-01 07:47:07,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-05-01 07:47:07,233 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:47:07,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:47:07,318 INFO L142 QuantifierPusher]: treesize reduction 15, result has 65.1 percent of original size [2021-05-01 07:47:07,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:07,319 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:07,321 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:47:07,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:07,396 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:47:07,397 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:47:07,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:07,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:07,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:07,465 INFO L147 QuantifierPusher]: treesize reduction 2, result has 91.3 percent of original size 21 [2021-05-01 07:47:07,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:07,548 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:47:07,549 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:47:07,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:07,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:07,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:07,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:47:07,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-05-01 07:47:07,715 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-05-01 07:47:07,716 INFO L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-05-01 07:47:07,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:07,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:47:07,748 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:47:07,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864787692] [2021-05-01 07:47:07,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1864787692] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:47:07,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:47:07,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 07:47:07,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250300534] [2021-05-01 07:47:07,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 07:47:07,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:47:07,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 07:47:07,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-05-01 07:47:07,749 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 07:47:08,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:47:08,817 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-05-01 07:47:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-01 07:47:08,818 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 24 [2021-05-01 07:47:08,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:47:08,818 INFO L225 Difference]: With dead ends: 49 [2021-05-01 07:47:08,818 INFO L226 Difference]: Without dead ends: 43 [2021-05-01 07:47:08,819 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1477.3ms TimeCoverageRelationStatistics Valid=219, Invalid=1187, Unknown=0, NotChecked=0, Total=1406 [2021-05-01 07:47:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-01 07:47:08,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-05-01 07:47:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 3 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 07:47:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-05-01 07:47:08,832 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 24 [2021-05-01 07:47:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:47:08,832 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-05-01 07:47:08,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 07:47:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-05-01 07:47:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-01 07:47:08,832 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 07:47:08,832 INFO L519 BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 07:47:08,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-05-01 07:47:08,833 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 07:47:08,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 07:47:08,833 INFO L82 PathProgramCache]: Analyzing trace with hash -374556013, now seen corresponding path program 26 times [2021-05-01 07:47:08,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 07:47:08,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125426911] [2021-05-01 07:47:08,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 07:47:08,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-01 07:47:08,845 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (not (= |v_main_#t~nondet7_384| 0)) (<= 0 (+ |v_main_#t~nondet7_384| 2147483648)) (< v_main_~i~0_391 v_~SIZE~0_109) (<= |v_main_#t~nondet7_384| 2147483647)) InVars {~SIZE~0=v_~SIZE~0_109, main_~i~0=v_main_~i~0_391, main_#t~nondet7=|v_main_#t~nondet7_384|} OutVars{~SIZE~0=v_~SIZE~0_109, main_~i~0=v_main_~i~0_391, main_#t~nondet7=|v_main_#t~nondet7_384|} AuxVars[] AssignedVars[] [2021-05-01 07:47:08,847 WARN L240 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size [2021-05-01 07:47:08,853 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,857 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,861 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,865 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,870 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,874 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,879 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,880 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,881 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,885 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,888 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,889 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-05-01 07:47:08,893 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,897 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:08,898 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-05-01 07:47:08,901 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,905 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,907 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:08,911 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,915 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,919 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,923 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,926 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,930 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,934 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,938 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,939 WARN L245 tifierPushTermWalker]: treesize reduction 11, result has 90.4 percent of original size 103 [2021-05-01 07:47:08,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:08,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-05-01 07:47:08,998 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-05-01 07:47:09,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:47:09,000 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~i~0_393 v_~SIZE~0_110) (= |v_main_#t~nondet7_386| 0)) InVars {~SIZE~0=v_~SIZE~0_110, main_~i~0=v_main_~i~0_393, main_#t~nondet7=|v_main_#t~nondet7_386|} OutVars{~SIZE~0=v_~SIZE~0_110, main_~i~0=v_main_~i~0_393, main_#t~nondet7=|v_main_#t~nondet7_386|} AuxVars[] AssignedVars[] [2021-05-01 07:47:09,001 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size [2021-05-01 07:47:09,006 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,011 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,014 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,018 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,023 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,024 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,024 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,029 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,032 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,033 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-05-01 07:47:09,038 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,042 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:09,043 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-05-01 07:47:09,046 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-05-01 07:47:09,049 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,053 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,057 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,068 INFO L118 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,072 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,075 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,076 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 91.0 percent of original size 71 [2021-05-01 07:47:09,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-05-01 07:47:09,115 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:47:09,115 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:47:09,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-05-01 07:47:09,118 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because SIMULTANEOUS_UPDATE_FAILED [2021-05-01 07:47:09,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-05-01 07:47:09,119 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-05-01 07:47:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:47:09,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:47:09,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 07:47:09,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-05-01 07:47:09,191 INFO L142 QuantifierPusher]: treesize reduction 9, result has 81.3 percent of original size [2021-05-01 07:47:09,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-05-01 07:47:09,234 INFO L142 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size [2021-05-01 07:47:09,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:47:09,266 INFO L142 QuantifierPusher]: treesize reduction 111, result has 54.9 percent of original size [2021-05-01 07:47:09,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-05-01 07:47:09,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:47:09,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-05-01 07:47:09,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:47:09,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 07:47:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 07:47:09,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 07:47:09,399 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 07:47:09,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:09,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:09,402 INFO L147 QuantifierPusher]: treesize reduction 19, result has 76.8 percent of original size 63 [2021-05-01 07:47:09,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:09,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:09,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-05-01 07:47:09,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-05-01 07:47:09,552 INFO L142 QuantifierPusher]: treesize reduction 8, result has 86.7 percent of original size [2021-05-01 07:47:09,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-05-01 07:47:09,639 INFO L142 QuantifierPusher]: treesize reduction 11, result has 73.8 percent of original size [2021-05-01 07:47:09,640 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:47:09,689 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:47:09,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:47:09,785 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-05-01 07:47:09,786 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:47:09,838 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-05-01 07:47:09,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:47:09,898 INFO L142 QuantifierPusher]: treesize reduction 8, result has 80.5 percent of original size [2021-05-01 07:47:09,899 INFO L147 QuantifierPusher]: treesize reduction 2, result has 93.3 percent of original size 28 [2021-05-01 07:47:09,957 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:47:09,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:47:10,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:10,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:10,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:10,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:10,032 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.5 percent of original size 42 [2021-05-01 07:47:10,125 INFO L142 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-05-01 07:47:10,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-05-01 07:47:10,196 INFO L142 QuantifierPusher]: treesize reduction 8, result has 81.4 percent of original size [2021-05-01 07:47:10,197 INFO L147 QuantifierPusher]: treesize reduction 2, result has 92.9 percent of original size 26 [2021-05-01 07:47:10,298 INFO L142 QuantifierPusher]: treesize reduction 5, result has 86.5 percent of original size [2021-05-01 07:47:10,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-05-01 07:47:10,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:10,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-01 07:47:10,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:10,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-05-01 07:47:10,370 INFO L147 QuantifierPusher]: treesize reduction 2, result has 95.2 percent of original size 40 [2021-05-01 07:47:10,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 07:47:10,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 07:47:10,516 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 07:47:10,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125426911] [2021-05-01 07:47:10,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1125426911] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 07:47:10,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 07:47:10,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-05-01 07:47:10,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623571717] [2021-05-01 07:47:10,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-01 07:47:10,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 07:47:10,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-01 07:47:10,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-05-01 07:47:10,517 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 07:47:12,089 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-05-01 07:47:12,269 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2021-05-01 07:47:12,474 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2021-05-01 07:47:12,652 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-05-01 07:47:13,082 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2021-05-01 07:47:13,280 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2021-05-01 07:47:13,413 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2021-05-01 07:47:13,594 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-05-01 07:47:13,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 07:47:13,690 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2021-05-01 07:47:13,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-01 07:47:13,692 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 24 [2021-05-01 07:47:13,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 07:47:13,692 INFO L225 Difference]: With dead ends: 54 [2021-05-01 07:47:13,692 INFO L226 Difference]: Without dead ends: 0 [2021-05-01 07:47:13,693 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3885.1ms TimeCoverageRelationStatistics Valid=412, Invalid=2038, Unknown=0, NotChecked=0, Total=2450 [2021-05-01 07:47:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-01 07:47:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-01 07:47:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-01 07:47:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-01 07:47:13,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-05-01 07:47:13,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 07:47:13,693 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-01 07:47:13,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 18 states have internal predecessors, (20), 3 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 07:47:13,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-01 07:47:13,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-01 07:47:13,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-05-01 07:47:13,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-01 07:47:14,261 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 792 DAG size of output: 702 [2021-05-01 07:47:14,981 WARN L205 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 573 DAG size of output: 479 [2021-05-01 07:47:21,483 WARN L205 SmtUtils]: Spent 6.30 s on a formula simplification. DAG size of input: 672 DAG size of output: 47 [2021-05-01 07:47:29,017 WARN L205 SmtUtils]: Spent 7.51 s on a formula simplification. DAG size of input: 460 DAG size of output: 97 [2021-05-01 07:47:29,269 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 24 [2021-05-01 07:47:29,459 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 20 [2021-05-01 07:47:29,461 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2021-05-01 07:47:29,461 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 7) no Hoare annotation was computed. [2021-05-01 07:47:29,461 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2021-05-01 07:47:29,461 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= ~SIZE~0 50000001) (<= 50000001 ~SIZE~0)) [2021-05-01 07:47:29,461 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-01 07:47:29,461 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= ~SIZE~0 50000001) (<= 50000001 ~SIZE~0)) [2021-05-01 07:47:29,461 INFO L194 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (<= 50000001 ~SIZE~0) [2021-05-01 07:47:29,461 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~SIZE~0 50000001) (<= 50000001 ~SIZE~0)) [2021-05-01 07:47:29,461 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-01 07:47:29,461 INFO L194 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (<= 50000001 ~SIZE~0) [2021-05-01 07:47:29,461 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2021-05-01 07:47:29,461 INFO L198 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2021-05-01 07:47:29,461 INFO L198 CegarLoopUtils]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2021-05-01 07:47:29,462 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2021-05-01 07:47:29,462 INFO L194 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (or (not (<= 50000001 ~SIZE~0)) (let ((.cse0 (* 4 main_~j~0))) (and (< main_~i~0 (+ ~SIZE~0 8)) (<= 50000001 main_~i~0) (<= main_~i~0 .cse0) (< .cse0 (+ main_~i~0 1)))) (not (<= ~SIZE~0 50000001))) [2021-05-01 07:47:29,462 INFO L201 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: true [2021-05-01 07:47:29,462 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2021-05-01 07:47:29,462 INFO L194 CegarLoopUtils]: At program point L25(lines 25 28) the Hoare annotation is: (let ((.cse1 (<= 0 (+ |main_#t~nondet7| 2147483648))) (.cse2 (<= |main_#t~nondet7| 2147483647))) (or (not (<= 50000001 ~SIZE~0)) (and (let ((.cse0 (< main_~i~0 ~SIZE~0))) (or (and (or (= main_~i~0 12) (and (= 0 (mod (+ main_~i~0 4) 8)) (< 0 (div (+ main_~i~0 (- 12)) 8)))) .cse0) (and (or (= main_~i~0 8) (and (= (mod main_~i~0 8) 0) (< 0 (div (+ main_~i~0 (- 8)) 8)))) .cse0))) .cse1 .cse2) (and (exists ((|v_main_#t~nondet7_254| Int) (aux_div_aux_div_v_main_~i~0_261_35_65 Int) (aux_mod_v_main_~i~0_261_35 Int)) (and (let ((.cse5 (+ aux_mod_v_main_~i~0_261_35 ~SIZE~0 1)) (.cse6 (* 4 aux_div_aux_div_v_main_~i~0_261_35_65)) (.cse3 (= |v_main_#t~nondet7_254| 0)) (.cse8 (= (* aux_div_aux_div_v_main_~i~0_261_35_65 4) (+ main_~i~0 aux_mod_v_main_~i~0_261_35 1))) (.cse9 (= |v_main_#t~nondet7_254| |main_#t~nondet7|))) (or (let ((.cse7 (* aux_div_aux_div_v_main_~i~0_261_35_65 (- 4)))) (let ((.cse4 (div (+ main_~i~0 .cse7 aux_mod_v_main_~i~0_261_35 1) 4))) (and .cse3 (< 0 .cse4) (= (mod (+ (* (div (+ (* aux_div_aux_div_v_main_~i~0_261_35_65 12) (* aux_mod_v_main_~i~0_261_35 (- 3)) (- 3)) 3) 3) main_~i~0) 4) 0) (or (not (= |main_#t~nondet7| 0)) (<= .cse5 (+ .cse6 (* 4 .cse4)))) (< .cse4 (+ (div (+ .cse7 aux_mod_v_main_~i~0_261_35 ~SIZE~0) 4) 2))))) (and .cse8 (or (<= .cse5 .cse6) (not .cse3)) .cse9) (and .cse8 .cse9))) (< aux_mod_v_main_~i~0_261_35 4) (<= 3 aux_mod_v_main_~i~0_261_35))) (= main_~i~0 0) .cse1 (= main_~j~0 (div main_~i~0 4)) .cse2) (and (= main_~i~0 4) .cse1 .cse2) (not (<= ~SIZE~0 50000001)))) [2021-05-01 07:47:29,462 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 20 34) the Hoare annotation is: true [2021-05-01 07:47:29,462 INFO L194 CegarLoopUtils]: At program point L25-2(lines 23 30) the Hoare annotation is: (let ((.cse0 (= (mod main_~i~0 8) 0)) (.cse1 (< main_~i~0 (+ ~SIZE~0 4)))) (or (= main_~i~0 12) (= main_~i~0 4) (not (<= 50000001 ~SIZE~0)) (and (< 0 (div (+ main_~i~0 (- 24)) 8)) .cse0 (< main_~i~0 (+ ~SIZE~0 8))) (and .cse1 .cse0 (< 0 (div (+ main_~i~0 (- 8)) 8))) (= main_~i~0 8) (and (= main_~i~0 0) (= main_~j~0 (div main_~i~0 4))) (and .cse1 (= 0 (mod (+ main_~i~0 4) 8)) (< 0 (div (+ main_~i~0 (- 12)) 8))) (not (<= ~SIZE~0 50000001)))) [2021-05-01 07:47:29,462 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse0 (< main_~i~0 (+ ~SIZE~0 8))) (.cse1 (<= 50000001 main_~i~0))) (or (and (= (mod (+ (* main_~i~0 7) 4) (- 8)) 0) .cse0 .cse1) (and (= (mod main_~i~0 8) 0) .cse0 .cse1) (not (<= 50000001 ~SIZE~0)) (not (<= ~SIZE~0 50000001)))) [2021-05-01 07:47:29,462 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 20 34) the Hoare annotation is: true [2021-05-01 07:47:29,462 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2021-05-01 07:47:29,462 INFO L194 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (or (not (<= ~SIZE~0 50000001)) (= |__VERIFIER_assert_#in~cond| 0) (not (<= 50000001 ~SIZE~0))) [2021-05-01 07:47:29,462 INFO L194 CegarLoopUtils]: At program point L13(lines 13 15) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= 50000001 ~SIZE~0)) (not (= __VERIFIER_assert_~cond 0)) (not (<= ~SIZE~0 50000001))) [2021-05-01 07:47:29,462 INFO L201 CegarLoopUtils]: At program point L13-2(lines 12 17) the Hoare annotation is: true [2021-05-01 07:47:29,462 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 12 17) the Hoare annotation is: true [2021-05-01 07:47:29,462 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) the Hoare annotation is: (or (not (<= ~SIZE~0 50000001)) (= |__VERIFIER_assert_#in~cond| 0) (not (<= 50000001 ~SIZE~0))) [2021-05-01 07:47:29,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 07:47:29 BoogieIcfgContainer [2021-05-01 07:47:29,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 07:47:29,488 INFO L168 Benchmark]: Toolchain (without parser) took 274318.40 ms. Allocated memory was 201.3 MB in the beginning and 313.5 MB in the end (delta: 112.2 MB). Free memory was 165.2 MB in the beginning and 195.1 MB in the end (delta: -29.9 MB). Peak memory consumption was 174.6 MB. Max. memory is 8.0 GB. [2021-05-01 07:47:29,489 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 201.3 MB. Free memory is still 181.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 07:47:29,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.39 ms. Allocated memory is still 201.3 MB. Free memory was 165.0 MB in the beginning and 183.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. [2021-05-01 07:47:29,489 INFO L168 Benchmark]: Boogie Preprocessor took 17.30 ms. Allocated memory is still 201.3 MB. Free memory was 183.8 MB in the beginning and 182.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 07:47:29,489 INFO L168 Benchmark]: RCFGBuilder took 292.71 ms. Allocated memory is still 201.3 MB. Free memory was 182.5 MB in the beginning and 168.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-01 07:47:29,489 INFO L168 Benchmark]: TraceAbstraction took 273841.01 ms. Allocated memory was 201.3 MB in the beginning and 313.5 MB in the end (delta: 112.2 MB). Free memory was 168.1 MB in the beginning and 195.1 MB in the end (delta: -27.1 MB). Peak memory consumption was 177.8 MB. Max. memory is 8.0 GB. [2021-05-01 07:47:29,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 201.3 MB. Free memory is still 181.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 162.39 ms. Allocated memory is still 201.3 MB. Free memory was 165.0 MB in the beginning and 183.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.30 ms. Allocated memory is still 201.3 MB. Free memory was 183.8 MB in the beginning and 182.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 292.71 ms. Allocated memory is still 201.3 MB. Free memory was 182.5 MB in the beginning and 168.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 273841.01 ms. Allocated memory was 201.3 MB in the beginning and 313.5 MB in the end (delta: 112.2 MB). Free memory was 168.1 MB in the beginning and 195.1 MB in the end (delta: -27.1 MB). Peak memory consumption was 177.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 257981.1ms, OverallIterations: 32, TraceHistogramMax: 6, EmptinessCheckTime: 29.2ms, AutomataDifference: 119722.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 15766.5ms, InitialAbstractionConstructionTime: 15.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 318 SDtfs, 1021 SDslu, 891 SDs, 0 SdLazy, 7102 SolverSat, 514 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 21699.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1025 GetRequests, 96 SyntacticMatches, 11 SemanticMatches, 918 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5378 ImplicationChecksByTransitivity, 181061.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=22, InterpolantAutomatonStates: 505, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 256.8ms AutomataMinimizationTime, 32 MinimizatonAttempts, 107 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 21 LocationsWithAnnotation, 291 PreInvPairs, 470 NumberOfFragments, 479 HoareAnnotationTreeSize, 291 FomulaSimplifications, 13350752829 FormulaSimplificationTreeSizeReduction, 1444.5ms HoareSimplificationTime, 21 FomulaSimplificationsInter, 55225 FormulaSimplificationTreeSizeReductionInter, 14299.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((((((i == 12 || i == 4) || !(50000001 <= SIZE)) || ((0 < (i + -24) / 8 && i % 8 == 0) && i < SIZE + 8)) || ((i < SIZE + 4 && i % 8 == 0) && 0 < (i + -8) / 8)) || i == 8) || (i == 0 && j == i / 4)) || ((i < SIZE + 4 && 0 == (i + 4) % 8) && 0 < (i + -12) / 8)) || !(SIZE <= 50000001) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...