/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:40:57,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:40:57,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:40:57,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:40:57,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:40:57,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:40:57,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:40:57,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:40:57,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:40:57,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:40:57,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:40:57,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:40:57,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:40:57,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:40:57,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:40:57,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:40:57,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:40:57,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:40:57,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:40:57,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:40:57,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:40:57,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:40:57,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:40:57,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:40:57,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:40:57,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:40:57,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:40:57,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:40:57,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:40:57,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:40:57,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:40:57,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:40:57,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:40:57,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:40:57,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:40:57,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:40:57,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:40:57,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:40:57,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:40:57,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:40:57,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:40:57,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:40:57,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:40:57,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:40:57,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:40:57,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:40:57,697 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:40:57,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:40:57,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:40:57,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:40:57,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:40:57,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:40:57,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:40:57,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:40:57,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:40:57,699 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:40:57,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:40:57,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:40:57,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:40:57,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:40:57,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:40:57,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:40:57,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:40:57,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:40:57,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:40:57,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:40:57,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:40:57,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:40:57,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:40:57,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:40:57,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:40:57,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:40:58,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:40:58,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:40:58,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:40:58,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:40:58,056 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:40:58,057 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-12 19:40:58,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481a538b5/0a196d64773e421e8bd2aeead14bff96/FLAGd24b5de3b [2020-10-12 19:40:58,660 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:40:58,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-12 19:40:58,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481a538b5/0a196d64773e421e8bd2aeead14bff96/FLAGd24b5de3b [2020-10-12 19:40:58,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/481a538b5/0a196d64773e421e8bd2aeead14bff96 [2020-10-12 19:40:58,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:40:59,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:40:59,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:40:59,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:40:59,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:40:59,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:40:58" (1/1) ... [2020-10-12 19:40:59,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6f08d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59, skipping insertion in model container [2020-10-12 19:40:59,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:40:58" (1/1) ... [2020-10-12 19:40:59,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:40:59,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:40:59,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:40:59,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:40:59,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:40:59,594 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:40:59,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59 WrapperNode [2020-10-12 19:40:59,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:40:59,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:40:59,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:40:59,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:40:59,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (1/1) ... [2020-10-12 19:40:59,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (1/1) ... [2020-10-12 19:40:59,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (1/1) ... [2020-10-12 19:40:59,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (1/1) ... [2020-10-12 19:40:59,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (1/1) ... [2020-10-12 19:40:59,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (1/1) ... [2020-10-12 19:40:59,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (1/1) ... [2020-10-12 19:40:59,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:40:59,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:40:59,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:40:59,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:40:59,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 19:40:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:40:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:40:59,718 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:40:59,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:40:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:40:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:40:59,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:40:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:40:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:40:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:40:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:40:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:40:59,719 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:40:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:40:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:40:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:40:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:40:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-12 19:40:59,720 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:40:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:40:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:40:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:40:59,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:41:00,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:41:00,408 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:41:00,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:41:00 BoogieIcfgContainer [2020-10-12 19:41:00,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:41:00,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:41:00,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:41:00,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:41:00,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:40:58" (1/3) ... [2020-10-12 19:41:00,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7369baee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:41:00, skipping insertion in model container [2020-10-12 19:41:00,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:40:59" (2/3) ... [2020-10-12 19:41:00,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7369baee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:41:00, skipping insertion in model container [2020-10-12 19:41:00,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:41:00" (3/3) ... [2020-10-12 19:41:00,424 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2020-10-12 19:41:00,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:41:00,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:41:00,459 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:41:00,486 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:41:00,487 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:41:00,487 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:41:00,487 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:41:00,487 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:41:00,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:41:00,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:41:00,488 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:41:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2020-10-12 19:41:00,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-12 19:41:00,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:00,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:00,526 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:00,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1263319593, now seen corresponding path program 1 times [2020-10-12 19:41:00,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:00,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671839014] [2020-10-12 19:41:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:01,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:01,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:01,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:01,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:05,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 19:41:05,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:41:05,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 19:41:05,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:05,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:41:05,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:41:06,310 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:06,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:06,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:06,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:41:06,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:06,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:06,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671839014] [2020-10-12 19:41:06,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:06,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:06,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060669100] [2020-10-12 19:41:06,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:06,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:06,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:06,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:06,438 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 9 states. [2020-10-12 19:41:06,778 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:41:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:07,895 INFO L93 Difference]: Finished difference Result 1009 states and 1596 transitions. [2020-10-12 19:41:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:07,897 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-12 19:41:07,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:07,919 INFO L225 Difference]: With dead ends: 1009 [2020-10-12 19:41:07,919 INFO L226 Difference]: Without dead ends: 887 [2020-10-12 19:41:07,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:07,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-10-12 19:41:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 185. [2020-10-12 19:41:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-12 19:41:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 266 transitions. [2020-10-12 19:41:08,001 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 266 transitions. Word has length 76 [2020-10-12 19:41:08,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:08,002 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 266 transitions. [2020-10-12 19:41:08,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 266 transitions. [2020-10-12 19:41:08,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:41:08,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:08,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:08,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:41:08,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash -808912086, now seen corresponding path program 1 times [2020-10-12 19:41:08,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:08,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207094812] [2020-10-12 19:41:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:13,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:13,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:41:13,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:41:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:41:13,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:41:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:41:13,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:41:13,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:13,332 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:13,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:13,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:13,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:13,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:13,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:41:13,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:13,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:41:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:13,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:41:13,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:13,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207094812] [2020-10-12 19:41:13,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:13,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:41:13,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672261956] [2020-10-12 19:41:13,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:41:13,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:13,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:41:13,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:41:13,410 INFO L87 Difference]: Start difference. First operand 185 states and 266 transitions. Second operand 7 states. [2020-10-12 19:41:13,616 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 19:41:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:14,236 INFO L93 Difference]: Finished difference Result 554 states and 849 transitions. [2020-10-12 19:41:14,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:41:14,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-12 19:41:14,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:14,240 INFO L225 Difference]: With dead ends: 554 [2020-10-12 19:41:14,241 INFO L226 Difference]: Without dead ends: 416 [2020-10-12 19:41:14,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:41:14,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-12 19:41:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 188. [2020-10-12 19:41:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-12 19:41:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 270 transitions. [2020-10-12 19:41:14,290 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 270 transitions. Word has length 78 [2020-10-12 19:41:14,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:14,292 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 270 transitions. [2020-10-12 19:41:14,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:41:14,293 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 270 transitions. [2020-10-12 19:41:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:41:14,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:14,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:14,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:41:14,300 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:14,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:14,301 INFO L82 PathProgramCache]: Analyzing trace with hash 309423158, now seen corresponding path program 1 times [2020-10-12 19:41:14,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:14,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580497572] [2020-10-12 19:41:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:14,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:14,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:14,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:14,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:14,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:15,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:19,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:19,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:41:19,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:41:19,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:41:19,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:19,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:19,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:41:19,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:41:19,668 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:19,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:19,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:19,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:19,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:19,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:41:19,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:19,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:19,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:19,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580497572] [2020-10-12 19:41:19,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:19,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:19,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194648761] [2020-10-12 19:41:19,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:19,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:19,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:19,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:19,721 INFO L87 Difference]: Start difference. First operand 188 states and 270 transitions. Second operand 9 states. [2020-10-12 19:41:19,946 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:41:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:21,055 INFO L93 Difference]: Finished difference Result 1403 states and 2188 transitions. [2020-10-12 19:41:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:21,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:41:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:21,068 INFO L225 Difference]: With dead ends: 1403 [2020-10-12 19:41:21,069 INFO L226 Difference]: Without dead ends: 1265 [2020-10-12 19:41:21,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:21,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2020-10-12 19:41:21,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 388. [2020-10-12 19:41:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2020-10-12 19:41:21,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 588 transitions. [2020-10-12 19:41:21,140 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 588 transitions. Word has length 78 [2020-10-12 19:41:21,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:21,141 INFO L479 AbstractCegarLoop]: Abstraction has 388 states and 588 transitions. [2020-10-12 19:41:21,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:21,141 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 588 transitions. [2020-10-12 19:41:21,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:41:21,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:21,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:21,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:41:21,143 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1700660414, now seen corresponding path program 1 times [2020-10-12 19:41:21,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:21,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798529416] [2020-10-12 19:41:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:21,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:21,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:23,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:26,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:26,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:41:26,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:41:26,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:41:26,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:26,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:26,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:41:26,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:26,407 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:26,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:26,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:26,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:41:26,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:26,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:26,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:26,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:26,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798529416] [2020-10-12 19:41:26,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:26,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:26,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513267271] [2020-10-12 19:41:26,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:26,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:26,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:26,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:26,451 INFO L87 Difference]: Start difference. First operand 388 states and 588 transitions. Second operand 9 states. [2020-10-12 19:41:26,765 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:41:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:28,084 INFO L93 Difference]: Finished difference Result 1717 states and 2679 transitions. [2020-10-12 19:41:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:28,085 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:41:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:28,094 INFO L225 Difference]: With dead ends: 1717 [2020-10-12 19:41:28,094 INFO L226 Difference]: Without dead ends: 1515 [2020-10-12 19:41:28,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:28,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2020-10-12 19:41:28,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 592. [2020-10-12 19:41:28,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-12 19:41:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 913 transitions. [2020-10-12 19:41:28,163 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 913 transitions. Word has length 78 [2020-10-12 19:41:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:28,163 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 913 transitions. [2020-10-12 19:41:28,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:28,163 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 913 transitions. [2020-10-12 19:41:28,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:41:28,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:28,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:28,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:41:28,165 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:28,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:28,166 INFO L82 PathProgramCache]: Analyzing trace with hash 552474929, now seen corresponding path program 1 times [2020-10-12 19:41:28,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:28,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637463692] [2020-10-12 19:41:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:28,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:28,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:28,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:33,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:41:33,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 19:41:33,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:41:33,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:33,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:41:33,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:33,522 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:33,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:33,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:33,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:33,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:33,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:41:33,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:33,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637463692] [2020-10-12 19:41:33,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:33,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:33,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820442850] [2020-10-12 19:41:33,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:33,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:33,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:33,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:33,574 INFO L87 Difference]: Start difference. First operand 592 states and 913 transitions. Second operand 9 states. [2020-10-12 19:41:33,857 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-12 19:41:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:34,751 INFO L93 Difference]: Finished difference Result 2156 states and 3381 transitions. [2020-10-12 19:41:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:34,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:41:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:34,761 INFO L225 Difference]: With dead ends: 2156 [2020-10-12 19:41:34,761 INFO L226 Difference]: Without dead ends: 1614 [2020-10-12 19:41:34,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2020-10-12 19:41:34,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 592. [2020-10-12 19:41:34,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-10-12 19:41:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 909 transitions. [2020-10-12 19:41:34,836 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 909 transitions. Word has length 78 [2020-10-12 19:41:34,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:34,837 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 909 transitions. [2020-10-12 19:41:34,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 909 transitions. [2020-10-12 19:41:34,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:41:34,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:34,844 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:34,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:41:34,845 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:34,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:34,845 INFO L82 PathProgramCache]: Analyzing trace with hash 532425586, now seen corresponding path program 1 times [2020-10-12 19:41:34,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:34,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117047935] [2020-10-12 19:41:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:34,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:34,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:34,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:34,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:35,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:39,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:39,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:41:39,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:41:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:41:39,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:41:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-12 19:41:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 19:41:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:40,074 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:40,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:40,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:41:40,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:40,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117047935] [2020-10-12 19:41:40,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:40,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:41:40,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287287963] [2020-10-12 19:41:40,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:41:40,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:40,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:41:40,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:41:40,106 INFO L87 Difference]: Start difference. First operand 592 states and 909 transitions. Second operand 5 states. [2020-10-12 19:41:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:40,899 INFO L93 Difference]: Finished difference Result 1138 states and 1764 transitions. [2020-10-12 19:41:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:41:40,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-12 19:41:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:40,907 INFO L225 Difference]: With dead ends: 1138 [2020-10-12 19:41:40,907 INFO L226 Difference]: Without dead ends: 1136 [2020-10-12 19:41:40,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:41:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2020-10-12 19:41:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 606. [2020-10-12 19:41:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606 states. [2020-10-12 19:41:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 923 transitions. [2020-10-12 19:41:40,987 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 923 transitions. Word has length 78 [2020-10-12 19:41:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:40,987 INFO L479 AbstractCegarLoop]: Abstraction has 606 states and 923 transitions. [2020-10-12 19:41:40,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:41:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 923 transitions. [2020-10-12 19:41:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:41:40,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:40,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:40,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:41:40,989 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:40,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:40,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1676915192, now seen corresponding path program 1 times [2020-10-12 19:41:40,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:40,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109668950] [2020-10-12 19:41:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:43,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:46,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:46,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:41:46,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:41:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:41:46,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:46,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:41:46,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:46,244 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:46,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:46,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:46,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:46,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:46,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:46,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:41:46,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:46,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:46,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:46,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:46,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109668950] [2020-10-12 19:41:46,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:46,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:46,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099254154] [2020-10-12 19:41:46,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:46,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:46,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:46,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:46,282 INFO L87 Difference]: Start difference. First operand 606 states and 923 transitions. Second operand 9 states. [2020-10-12 19:41:46,533 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:41:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:47,392 INFO L93 Difference]: Finished difference Result 1837 states and 2838 transitions. [2020-10-12 19:41:47,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:47,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:41:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:47,402 INFO L225 Difference]: With dead ends: 1837 [2020-10-12 19:41:47,403 INFO L226 Difference]: Without dead ends: 1631 [2020-10-12 19:41:47,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2020-10-12 19:41:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 746. [2020-10-12 19:41:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-10-12 19:41:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1143 transitions. [2020-10-12 19:41:47,521 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1143 transitions. Word has length 78 [2020-10-12 19:41:47,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:47,524 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 1143 transitions. [2020-10-12 19:41:47,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:47,525 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1143 transitions. [2020-10-12 19:41:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:41:47,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:47,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:47,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:41:47,527 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash -2073186308, now seen corresponding path program 1 times [2020-10-12 19:41:47,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:47,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525608239] [2020-10-12 19:41:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:47,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:52,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:52,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:41:52,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:41:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:41:52,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:52,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:41:52,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:52,775 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:52,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:52,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:52,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:52,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:52,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:52,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:41:52,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:52,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:52,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:52,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:52,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525608239] [2020-10-12 19:41:52,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:52,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:52,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025168140] [2020-10-12 19:41:52,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:52,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:52,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:52,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:52,807 INFO L87 Difference]: Start difference. First operand 746 states and 1143 transitions. Second operand 9 states. [2020-10-12 19:41:53,023 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:41:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:54,103 INFO L93 Difference]: Finished difference Result 2057 states and 3182 transitions. [2020-10-12 19:41:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:41:54,104 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:41:54,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:54,112 INFO L225 Difference]: With dead ends: 2057 [2020-10-12 19:41:54,112 INFO L226 Difference]: Without dead ends: 1851 [2020-10-12 19:41:54,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:41:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-10-12 19:41:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 886. [2020-10-12 19:41:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-10-12 19:41:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1363 transitions. [2020-10-12 19:41:54,219 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1363 transitions. Word has length 78 [2020-10-12 19:41:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:54,219 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1363 transitions. [2020-10-12 19:41:54,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:41:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1363 transitions. [2020-10-12 19:41:54,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-12 19:41:54,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:54,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:54,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:41:54,221 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:54,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1378930704, now seen corresponding path program 1 times [2020-10-12 19:41:54,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:54,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029364271] [2020-10-12 19:41:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:54,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:54,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:54,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:54,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:56,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:59,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:59,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-12 19:41:59,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:41:59,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:41:59,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:59,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:41:59,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:41:59,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:41:59,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:41:59,463 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:41:59,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:59,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:59,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:59,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:41:59,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:59,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:59,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:59,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029364271] [2020-10-12 19:41:59,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:59,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:41:59,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920082664] [2020-10-12 19:41:59,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:41:59,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:59,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:41:59,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:41:59,509 INFO L87 Difference]: Start difference. First operand 886 states and 1363 transitions. Second operand 9 states. [2020-10-12 19:41:59,735 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-12 19:42:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:00,853 INFO L93 Difference]: Finished difference Result 2240 states and 3469 transitions. [2020-10-12 19:42:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:42:00,853 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-10-12 19:42:00,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:00,862 INFO L225 Difference]: With dead ends: 2240 [2020-10-12 19:42:00,862 INFO L226 Difference]: Without dead ends: 2034 [2020-10-12 19:42:00,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:42:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2020-10-12 19:42:00,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1026. [2020-10-12 19:42:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2020-10-12 19:42:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1583 transitions. [2020-10-12 19:42:01,000 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1583 transitions. Word has length 78 [2020-10-12 19:42:01,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:01,000 INFO L479 AbstractCegarLoop]: Abstraction has 1026 states and 1583 transitions. [2020-10-12 19:42:01,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:42:01,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1583 transitions. [2020-10-12 19:42:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:42:01,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:01,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:01,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:42:01,003 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:01,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:01,003 INFO L82 PathProgramCache]: Analyzing trace with hash -665056210, now seen corresponding path program 1 times [2020-10-12 19:42:01,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:01,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101359629] [2020-10-12 19:42:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:01,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:02,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:02,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:42:02,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:42:02,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1901 [2020-10-12 19:42:02,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:02,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:42:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 19:42:02,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:42:02,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:03,132 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:42:03,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:03,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:03,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:03,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:03,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:03,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:42:03,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:03,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:03,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:03,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101359629] [2020-10-12 19:42:03,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:03,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:42:03,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703973993] [2020-10-12 19:42:03,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:42:03,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:03,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:42:03,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:42:03,163 INFO L87 Difference]: Start difference. First operand 1026 states and 1583 transitions. Second operand 5 states. [2020-10-12 19:42:03,357 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 19:42:04,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:04,311 INFO L93 Difference]: Finished difference Result 3808 states and 5953 transitions. [2020-10-12 19:42:04,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:42:04,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-12 19:42:04,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:04,322 INFO L225 Difference]: With dead ends: 3808 [2020-10-12 19:42:04,322 INFO L226 Difference]: Without dead ends: 2832 [2020-10-12 19:42:04,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:42:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2020-10-12 19:42:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2828. [2020-10-12 19:42:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2828 states. [2020-10-12 19:42:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2828 states to 2828 states and 4379 transitions. [2020-10-12 19:42:04,783 INFO L78 Accepts]: Start accepts. Automaton has 2828 states and 4379 transitions. Word has length 79 [2020-10-12 19:42:04,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:04,783 INFO L479 AbstractCegarLoop]: Abstraction has 2828 states and 4379 transitions. [2020-10-12 19:42:04,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:42:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2828 states and 4379 transitions. [2020-10-12 19:42:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:42:04,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:04,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:04,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:42:04,790 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:04,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:04,791 INFO L82 PathProgramCache]: Analyzing trace with hash -2123364895, now seen corresponding path program 1 times [2020-10-12 19:42:04,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:04,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97707093] [2020-10-12 19:42:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:04,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:08,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:09,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:09,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:42:09,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:42:09,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:42:09,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:42:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 19:42:09,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 19:42:09,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:10,010 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:42:10,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:10,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:10,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:10,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:10,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:10,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:42:10,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:42:10,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:10,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:42:10,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:10,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97707093] [2020-10-12 19:42:10,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:10,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:42:10,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117098342] [2020-10-12 19:42:10,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:42:10,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:10,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:42:10,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:42:10,040 INFO L87 Difference]: Start difference. First operand 2828 states and 4379 transitions. Second operand 8 states. [2020-10-12 19:42:11,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:11,637 INFO L93 Difference]: Finished difference Result 6417 states and 9900 transitions. [2020-10-12 19:42:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 19:42:11,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 80 [2020-10-12 19:42:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:11,662 INFO L225 Difference]: With dead ends: 6417 [2020-10-12 19:42:11,662 INFO L226 Difference]: Without dead ends: 5829 [2020-10-12 19:42:11,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:42:11,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5829 states. [2020-10-12 19:42:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 2939. [2020-10-12 19:42:12,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2939 states. [2020-10-12 19:42:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 4556 transitions. [2020-10-12 19:42:12,159 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 4556 transitions. Word has length 80 [2020-10-12 19:42:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:12,159 INFO L479 AbstractCegarLoop]: Abstraction has 2939 states and 4556 transitions. [2020-10-12 19:42:12,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:42:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 4556 transitions. [2020-10-12 19:42:12,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:42:12,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:12,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:12,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:42:12,162 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:12,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:12,162 INFO L82 PathProgramCache]: Analyzing trace with hash 129770448, now seen corresponding path program 1 times [2020-10-12 19:42:12,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:12,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258915612] [2020-10-12 19:42:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:12,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:12,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:17,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:17,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:42:17,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:42:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:42:17,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:42:17,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 19:42:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:17,443 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:42:17,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:17,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:17,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:17,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:17,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:17,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:42:17,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:42:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:42:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:17,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258915612] [2020-10-12 19:42:17,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:17,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:42:17,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55235612] [2020-10-12 19:42:17,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:17,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:17,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:17,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:17,489 INFO L87 Difference]: Start difference. First operand 2939 states and 4556 transitions. Second operand 7 states. [2020-10-12 19:42:17,678 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:42:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:19,078 INFO L93 Difference]: Finished difference Result 9477 states and 14706 transitions. [2020-10-12 19:42:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:42:19,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:42:19,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:19,103 INFO L225 Difference]: With dead ends: 9477 [2020-10-12 19:42:19,103 INFO L226 Difference]: Without dead ends: 6627 [2020-10-12 19:42:19,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:42:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6627 states. [2020-10-12 19:42:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6627 to 2867. [2020-10-12 19:42:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2867 states. [2020-10-12 19:42:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 4436 transitions. [2020-10-12 19:42:19,495 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 4436 transitions. Word has length 80 [2020-10-12 19:42:19,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:19,496 INFO L479 AbstractCegarLoop]: Abstraction has 2867 states and 4436 transitions. [2020-10-12 19:42:19,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 4436 transitions. [2020-10-12 19:42:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:42:19,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:19,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:19,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:42:19,498 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:19,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:19,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1174740956, now seen corresponding path program 1 times [2020-10-12 19:42:19,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:19,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200348696] [2020-10-12 19:42:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:19,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:24,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:24,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:42:24,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:42:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4946 [2020-10-12 19:42:24,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:42:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 19:42:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:24,719 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:42:24,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:24,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:24,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:24,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:42:24,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:24,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:42:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:42:24,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:24,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200348696] [2020-10-12 19:42:24,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:24,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:42:24,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044554927] [2020-10-12 19:42:24,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:24,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:24,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:24,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:24,769 INFO L87 Difference]: Start difference. First operand 2867 states and 4436 transitions. Second operand 7 states. [2020-10-12 19:42:24,952 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:42:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:26,356 INFO L93 Difference]: Finished difference Result 8669 states and 13402 transitions. [2020-10-12 19:42:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:42:26,356 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:42:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:26,369 INFO L225 Difference]: With dead ends: 8669 [2020-10-12 19:42:26,369 INFO L226 Difference]: Without dead ends: 5891 [2020-10-12 19:42:26,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:42:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5891 states. [2020-10-12 19:42:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5891 to 2955. [2020-10-12 19:42:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2955 states. [2020-10-12 19:42:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 4564 transitions. [2020-10-12 19:42:26,779 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 4564 transitions. Word has length 80 [2020-10-12 19:42:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:26,779 INFO L479 AbstractCegarLoop]: Abstraction has 2955 states and 4564 transitions. [2020-10-12 19:42:26,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 4564 transitions. [2020-10-12 19:42:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:42:26,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:26,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:26,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:42:26,781 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:26,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:26,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1775904478, now seen corresponding path program 1 times [2020-10-12 19:42:26,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:26,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95309200] [2020-10-12 19:42:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:26,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:31,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:31,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:42:31,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:42:31,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:42:31,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:42:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 19:42:31,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:32,007 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:42:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:32,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:32,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:32,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:42:32,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:42:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:32,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:42:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:32,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95309200] [2020-10-12 19:42:32,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:32,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:42:32,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402758884] [2020-10-12 19:42:32,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:32,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:32,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:32,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:32,048 INFO L87 Difference]: Start difference. First operand 2955 states and 4564 transitions. Second operand 7 states. [2020-10-12 19:42:32,257 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 19:42:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:33,709 INFO L93 Difference]: Finished difference Result 8329 states and 12850 transitions. [2020-10-12 19:42:33,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:42:33,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:42:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:33,723 INFO L225 Difference]: With dead ends: 8329 [2020-10-12 19:42:33,723 INFO L226 Difference]: Without dead ends: 5551 [2020-10-12 19:42:33,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:42:33,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5551 states. [2020-10-12 19:42:34,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5551 to 3035. [2020-10-12 19:42:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3035 states. [2020-10-12 19:42:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4676 transitions. [2020-10-12 19:42:34,217 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4676 transitions. Word has length 80 [2020-10-12 19:42:34,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:34,218 INFO L479 AbstractCegarLoop]: Abstraction has 3035 states and 4676 transitions. [2020-10-12 19:42:34,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:34,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4676 transitions. [2020-10-12 19:42:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:42:34,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:34,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:34,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:42:34,220 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:34,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:34,220 INFO L82 PathProgramCache]: Analyzing trace with hash -340357610, now seen corresponding path program 1 times [2020-10-12 19:42:34,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:34,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332004415] [2020-10-12 19:42:34,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:34,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:34,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:34,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:34,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:34,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:39,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:39,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:42:39,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:42:39,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:42:39,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:42:39,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:42:39,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:39,455 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:42:39,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:39,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:39,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:39,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:39,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:42:39,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:42:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:39,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:42:39,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:39,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332004415] [2020-10-12 19:42:39,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:39,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:42:39,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995085959] [2020-10-12 19:42:39,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:39,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:39,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:39,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:39,491 INFO L87 Difference]: Start difference. First operand 3035 states and 4676 transitions. Second operand 7 states. [2020-10-12 19:42:39,672 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 19:42:41,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:41,145 INFO L93 Difference]: Finished difference Result 9193 states and 14206 transitions. [2020-10-12 19:42:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:42:41,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:42:41,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:41,159 INFO L225 Difference]: With dead ends: 9193 [2020-10-12 19:42:41,160 INFO L226 Difference]: Without dead ends: 6295 [2020-10-12 19:42:41,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:42:41,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6295 states. [2020-10-12 19:42:41,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6295 to 2971. [2020-10-12 19:42:41,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2971 states. [2020-10-12 19:42:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4580 transitions. [2020-10-12 19:42:41,698 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4580 transitions. Word has length 80 [2020-10-12 19:42:41,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:41,699 INFO L479 AbstractCegarLoop]: Abstraction has 2971 states and 4580 transitions. [2020-10-12 19:42:41,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4580 transitions. [2020-10-12 19:42:41,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:42:41,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:41,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:41,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:42:41,700 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:41,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:41,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1119346954, now seen corresponding path program 1 times [2020-10-12 19:42:41,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:41,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465443930] [2020-10-12 19:42:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:41,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:46,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:42:46,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:42:46,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:42:46,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:42:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:42:46,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:42:46,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:46,972 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:42:46,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:46,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:46,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:46,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:46,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:46,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:42:46,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:42:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:46,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:42:46,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:47,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465443930] [2020-10-12 19:42:47,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:42:47,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 19:42:47,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810859224] [2020-10-12 19:42:47,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:42:47,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:42:47,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:42:47,027 INFO L87 Difference]: Start difference. First operand 2971 states and 4580 transitions. Second operand 7 states. [2020-10-12 19:42:47,207 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:42:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:48,822 INFO L93 Difference]: Finished difference Result 9973 states and 15460 transitions. [2020-10-12 19:42:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 19:42:48,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:42:48,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:48,834 INFO L225 Difference]: With dead ends: 9973 [2020-10-12 19:42:48,835 INFO L226 Difference]: Without dead ends: 7071 [2020-10-12 19:42:48,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:42:48,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2020-10-12 19:42:49,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 2907. [2020-10-12 19:42:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2907 states. [2020-10-12 19:42:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2907 states to 2907 states and 4488 transitions. [2020-10-12 19:42:49,375 INFO L78 Accepts]: Start accepts. Automaton has 2907 states and 4488 transitions. Word has length 80 [2020-10-12 19:42:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:49,376 INFO L479 AbstractCegarLoop]: Abstraction has 2907 states and 4488 transitions. [2020-10-12 19:42:49,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:42:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2907 states and 4488 transitions. [2020-10-12 19:42:49,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-12 19:42:49,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:49,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:49,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:42:49,379 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:49,379 INFO L82 PathProgramCache]: Analyzing trace with hash 638156499, now seen corresponding path program 1 times [2020-10-12 19:42:49,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:49,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105038614] [2020-10-12 19:42:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:49,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:54,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:54,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 19:42:54,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:42:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 19:42:54,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:42:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:42:54,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 19:42:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:54,698 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:42:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:42:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:54,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:54,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:42:54,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:42:54,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:42:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:42:54,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:42:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:42:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:42:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:42:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:42:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:42:54,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105038614] [2020-10-12 19:42:54,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:42:54,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 19:42:54,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752084599] [2020-10-12 19:42:54,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:42:54,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:42:54,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:42:54,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:42:54,747 INFO L87 Difference]: Start difference. First operand 2907 states and 4488 transitions. Second operand 8 states. [2020-10-12 19:42:54,947 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:42:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:42:56,769 INFO L93 Difference]: Finished difference Result 10397 states and 15994 transitions. [2020-10-12 19:42:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:42:56,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 109 [2020-10-12 19:42:56,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:42:56,778 INFO L225 Difference]: With dead ends: 10397 [2020-10-12 19:42:56,778 INFO L226 Difference]: Without dead ends: 7619 [2020-10-12 19:42:56,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:42:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7619 states. [2020-10-12 19:42:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7619 to 3331. [2020-10-12 19:42:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3331 states. [2020-10-12 19:42:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 4993 transitions. [2020-10-12 19:42:57,759 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 4993 transitions. Word has length 109 [2020-10-12 19:42:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:42:57,760 INFO L479 AbstractCegarLoop]: Abstraction has 3331 states and 4993 transitions. [2020-10-12 19:42:57,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:42:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 4993 transitions. [2020-10-12 19:42:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:42:57,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:42:57,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:42:57,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:42:57,763 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:42:57,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:42:57,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1516260791, now seen corresponding path program 1 times [2020-10-12 19:42:57,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:42:57,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100858547] [2020-10-12 19:42:57,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:42:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:42:57,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:57,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:57,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:58,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:42:59,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:02,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:02,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:43:02,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:43:02,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:43:02,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:43:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:43:02,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 19:43:02,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:03,211 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:43:03,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:03,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:03,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:03,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:03,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:43:03,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:03,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:03,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:03,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100858547] [2020-10-12 19:43:03,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:43:03,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 19:43:03,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076515866] [2020-10-12 19:43:03,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:43:03,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:03,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:43:03,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:43:03,253 INFO L87 Difference]: Start difference. First operand 3331 states and 4993 transitions. Second operand 12 states. [2020-10-12 19:43:03,458 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 19:43:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:09,971 INFO L93 Difference]: Finished difference Result 24626 states and 37301 transitions. [2020-10-12 19:43:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 19:43:09,971 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 110 [2020-10-12 19:43:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:09,991 INFO L225 Difference]: With dead ends: 24626 [2020-10-12 19:43:09,991 INFO L226 Difference]: Without dead ends: 24178 [2020-10-12 19:43:09,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=421, Invalid=1301, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 19:43:10,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24178 states. [2020-10-12 19:43:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24178 to 6531. [2020-10-12 19:43:11,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6531 states. [2020-10-12 19:43:11,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 9797 transitions. [2020-10-12 19:43:11,183 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 9797 transitions. Word has length 110 [2020-10-12 19:43:11,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:11,183 INFO L479 AbstractCegarLoop]: Abstraction has 6531 states and 9797 transitions. [2020-10-12 19:43:11,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:43:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 9797 transitions. [2020-10-12 19:43:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 19:43:11,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:11,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:11,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:43:11,187 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1244396965, now seen corresponding path program 1 times [2020-10-12 19:43:11,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:11,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860287096] [2020-10-12 19:43:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:11,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:15,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:16,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:16,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 19:43:16,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:43:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:43:16,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:43:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 19:43:16,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:43:16,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:16,394 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:43:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:16,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:16,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:16,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:16,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:43:16,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:43:16,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:43:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 19:43:16,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860287096] [2020-10-12 19:43:16,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:16,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 19:43:16,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761736282] [2020-10-12 19:43:16,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 19:43:16,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:16,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 19:43:16,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 19:43:16,430 INFO L87 Difference]: Start difference. First operand 6531 states and 9797 transitions. Second operand 4 states. [2020-10-12 19:43:16,628 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:43:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:19,240 INFO L93 Difference]: Finished difference Result 18689 states and 28015 transitions. [2020-10-12 19:43:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:43:19,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-12 19:43:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:19,253 INFO L225 Difference]: With dead ends: 18689 [2020-10-12 19:43:19,253 INFO L226 Difference]: Without dead ends: 12257 [2020-10-12 19:43:19,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:43:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12257 states. [2020-10-12 19:43:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12257 to 12255. [2020-10-12 19:43:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12255 states. [2020-10-12 19:43:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12255 states to 12255 states and 18251 transitions. [2020-10-12 19:43:21,343 INFO L78 Accepts]: Start accepts. Automaton has 12255 states and 18251 transitions. Word has length 110 [2020-10-12 19:43:21,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:21,343 INFO L479 AbstractCegarLoop]: Abstraction has 12255 states and 18251 transitions. [2020-10-12 19:43:21,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 19:43:21,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12255 states and 18251 transitions. [2020-10-12 19:43:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 19:43:21,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:21,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:21,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 19:43:21,347 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:21,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1071615049, now seen corresponding path program 1 times [2020-10-12 19:43:21,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:21,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068335050] [2020-10-12 19:43:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:21,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:21,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:21,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:21,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:22,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:26,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 19:43:26,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:43:26,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:43:26,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:26,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 19:43:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:43:26,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:43:26,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:26,560 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:43:26,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:26,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:26,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:26,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:26,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:43:26,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:43:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:26,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:43:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 19:43:26,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068335050] [2020-10-12 19:43:26,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:43:26,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:43:26,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444417553] [2020-10-12 19:43:26,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 19:43:26,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:26,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 19:43:26,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:43:26,595 INFO L87 Difference]: Start difference. First operand 12255 states and 18251 transitions. Second operand 6 states. [2020-10-12 19:43:26,779 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 19:43:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:43:32,289 INFO L93 Difference]: Finished difference Result 36461 states and 54317 transitions. [2020-10-12 19:43:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 19:43:32,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-12 19:43:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:43:32,312 INFO L225 Difference]: With dead ends: 36461 [2020-10-12 19:43:32,312 INFO L226 Difference]: Without dead ends: 24301 [2020-10-12 19:43:32,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:43:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24301 states. [2020-10-12 19:43:36,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24301 to 24299. [2020-10-12 19:43:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24299 states. [2020-10-12 19:43:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24299 states to 24299 states and 36093 transitions. [2020-10-12 19:43:36,483 INFO L78 Accepts]: Start accepts. Automaton has 24299 states and 36093 transitions. Word has length 111 [2020-10-12 19:43:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:43:36,484 INFO L479 AbstractCegarLoop]: Abstraction has 24299 states and 36093 transitions. [2020-10-12 19:43:36,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 19:43:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 24299 states and 36093 transitions. [2020-10-12 19:43:36,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 19:43:36,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:43:36,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:43:36,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 19:43:36,489 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:43:36,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:43:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash -530854674, now seen corresponding path program 1 times [2020-10-12 19:43:36,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:43:36,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351896883] [2020-10-12 19:43:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:43:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:36,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:41,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:41,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-12 19:43:41,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:43:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:43:41,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:43:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:43:41,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 19:43:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:41,801 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:43:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:43:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:43:41,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:43:41,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:43:41,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:43:41,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:43:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:43:41,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:43:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:43:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:43:41,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:43:41,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:43:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:43:41,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351896883] [2020-10-12 19:43:41,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:43:41,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 19:43:41,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667360415] [2020-10-12 19:43:41,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:43:41,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:43:41,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:43:41,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:43:41,850 INFO L87 Difference]: Start difference. First operand 24299 states and 36093 transitions. Second operand 11 states. [2020-10-12 19:43:42,073 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 19:44:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:44:12,247 INFO L93 Difference]: Finished difference Result 164679 states and 241871 transitions. [2020-10-12 19:44:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 19:44:12,248 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2020-10-12 19:44:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:44:12,394 INFO L225 Difference]: With dead ends: 164679 [2020-10-12 19:44:12,394 INFO L226 Difference]: Without dead ends: 140505 [2020-10-12 19:44:12,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:44:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140505 states. [2020-10-12 19:44:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140505 to 44115. [2020-10-12 19:44:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44115 states. [2020-10-12 19:44:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44115 states to 44115 states and 65291 transitions. [2020-10-12 19:44:21,311 INFO L78 Accepts]: Start accepts. Automaton has 44115 states and 65291 transitions. Word has length 111 [2020-10-12 19:44:21,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:44:21,311 INFO L479 AbstractCegarLoop]: Abstraction has 44115 states and 65291 transitions. [2020-10-12 19:44:21,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:44:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 44115 states and 65291 transitions. [2020-10-12 19:44:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-12 19:44:21,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:44:21,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:44:21,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 19:44:21,316 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:44:21,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:44:21,317 INFO L82 PathProgramCache]: Analyzing trace with hash 2036882721, now seen corresponding path program 1 times [2020-10-12 19:44:21,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:44:21,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355103709] [2020-10-12 19:44:21,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:44:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:21,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:21,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:26,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:26,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 19:44:26,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:44:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:44:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:26,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:44:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:44:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 19:44:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:26,566 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-12 19:44:26,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:44:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:44:26,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:44:26,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:44:26,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:44:26,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:44:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:44:26,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:44:26,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:44:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:44:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:44:26,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:44:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:44:26,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355103709] [2020-10-12 19:44:26,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 19:44:26,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 19:44:26,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481161176] [2020-10-12 19:44:26,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:44:26,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:44:26,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:44:26,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:44:26,632 INFO L87 Difference]: Start difference. First operand 44115 states and 65291 transitions. Second operand 8 states. [2020-10-12 19:44:26,827 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 156