/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/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:55:28,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:55:28,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:55:28,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:55:28,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:55:28,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:55:28,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:55:28,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:55:28,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:55:28,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:55:28,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:55:28,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:55:28,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:55:28,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:55:28,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:55:28,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:55:28,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:55:28,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:55:28,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:55:28,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:55:28,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:55:28,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:55:28,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:55:28,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:55:28,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:55:28,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:55:28,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:55:28,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:55:28,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:55:28,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:55:28,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:55:28,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:55:28,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:55:28,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:55:28,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:55:28,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:55:28,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:55:28,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:55:28,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:55:28,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:55:28,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:55:28,642 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 18:55:28,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:55:28,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:55:28,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:55:28,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:55:28,666 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:55:28,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:55:28,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:55:28,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:55:28,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:55:28,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:55:28,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:55:28,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:55:28,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:55:28,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:55:28,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:55:28,668 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:55:28,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:55:28,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:55:28,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:55:28,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:55:28,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:55:28,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:55:28,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:55:28,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:55:28,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:55:28,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:55:28,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:55:28,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:55:28,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:55:28,671 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 18:55:28,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:55:28,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:55:28,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:55:28,972 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:55:28,972 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:55:28,973 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-12 18:55:29,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62b5be4ff/5c5a09322a5b44f6be8dbdc599574100/FLAG35f8dc58d [2020-10-12 18:55:29,548 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:55:29,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-12 18:55:29,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62b5be4ff/5c5a09322a5b44f6be8dbdc599574100/FLAG35f8dc58d [2020-10-12 18:55:29,814 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62b5be4ff/5c5a09322a5b44f6be8dbdc599574100 [2020-10-12 18:55:29,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:55:29,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:55:29,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:55:29,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:55:29,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:55:29,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:55:29" (1/1) ... [2020-10-12 18:55:29,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1663de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:29, skipping insertion in model container [2020-10-12 18:55:29,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:55:29" (1/1) ... [2020-10-12 18:55:29,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:55:29,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:55:30,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:55:30,306 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:55:30,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:55:30,501 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:55:30,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30 WrapperNode [2020-10-12 18:55:30,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:55:30,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:55:30,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:55:30,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:55:30,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (1/1) ... [2020-10-12 18:55:30,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (1/1) ... [2020-10-12 18:55:30,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (1/1) ... [2020-10-12 18:55:30,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (1/1) ... [2020-10-12 18:55:30,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (1/1) ... [2020-10-12 18:55:30,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (1/1) ... [2020-10-12 18:55:30,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (1/1) ... [2020-10-12 18:55:30,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:55:30,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:55:30,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:55:30,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:55:30,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (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 18:55:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:55:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:55:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-12 18:55:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-12 18:55:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-12 18:55:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-12 18:55:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-12 18:55:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:55:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-12 18:55:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:55:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 18:55:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 18:55:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 18:55:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 18:55:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 18:55:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 18:55:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 18:55:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 18:55:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 18:55:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 18:55:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 18:55:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:55:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:55:30,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:55:31,418 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:55:31,418 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 18:55:31,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:55:31 BoogieIcfgContainer [2020-10-12 18:55:31,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:55:31,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:55:31,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:55:31,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:55:31,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:55:29" (1/3) ... [2020-10-12 18:55:31,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6339d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:55:31, skipping insertion in model container [2020-10-12 18:55:31,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:55:30" (2/3) ... [2020-10-12 18:55:31,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6339d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:55:31, skipping insertion in model container [2020-10-12 18:55:31,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:55:31" (3/3) ... [2020-10-12 18:55:31,433 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2020-10-12 18:55:31,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:55:31,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:55:31,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:55:31,484 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:55:31,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:55:31,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:55:31,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:55:31,485 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:55:31,485 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:55:31,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:55:31,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:55:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-12 18:55:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 18:55:31,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:55:31,519 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] [2020-10-12 18:55:31,519 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:55:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:55:31,526 INFO L82 PathProgramCache]: Analyzing trace with hash 715906761, now seen corresponding path program 1 times [2020-10-12 18:55:31,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:55:31,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450422816] [2020-10-12 18:55:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:55:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:31,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:32,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:32,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:55:32,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-12 18:55:32,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 18:55:32,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:32,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:55:32,545 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:55:32,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:55:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:32,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:32,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:32,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:55:32,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 18:55:32,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:55:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:32,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:55:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:32,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:32,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:32,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:55:32,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 18:55:32,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:55:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:32,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 18:55:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:32,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:32,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:32,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:55:32,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:32,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:55:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:32,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:55:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:32,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:32,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:32,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:32,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:32,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:55:32,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:32,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:55:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:32,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 18:55:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:32,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:32,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:32,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:32,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:55:32,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:32,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:55:32,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:32,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:55:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:32,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:32,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:32,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:55:32,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:32,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:55:32,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:55:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:32,831 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 18:55:32,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450422816] [2020-10-12 18:55:32,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:55:32,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 18:55:32,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184317337] [2020-10-12 18:55:32,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:55:32,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:55:32,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:55:32,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:55:32,865 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 6 states. [2020-10-12 18:55:34,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:55:34,096 INFO L93 Difference]: Finished difference Result 282 states and 447 transitions. [2020-10-12 18:55:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:55:34,098 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-12 18:55:34,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:55:34,120 INFO L225 Difference]: With dead ends: 282 [2020-10-12 18:55:34,120 INFO L226 Difference]: Without dead ends: 174 [2020-10-12 18:55:34,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:55:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-12 18:55:34,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 159. [2020-10-12 18:55:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-12 18:55:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 255 transitions. [2020-10-12 18:55:34,180 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 255 transitions. Word has length 61 [2020-10-12 18:55:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:55:34,180 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 255 transitions. [2020-10-12 18:55:34,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:55:34,181 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 255 transitions. [2020-10-12 18:55:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 18:55:34,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:55:34,184 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] [2020-10-12 18:55:34,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:55:34,185 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:55:34,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:55:34,185 INFO L82 PathProgramCache]: Analyzing trace with hash 321539975, now seen corresponding path program 1 times [2020-10-12 18:55:34,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:55:34,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71722608] [2020-10-12 18:55:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:55:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:34,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:34,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 18:55:34,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:34,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-12 18:55:34,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:55:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-12 18:55:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:55:34,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:35,009 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:55:35,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:55:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:35,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:35,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:35,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:55:35,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:55:35,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:55:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:35,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:55:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:35,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:35,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:35,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:55:35,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:35,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 18:55:35,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:55:35,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:55:35,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 18:55:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:35,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:35,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:35,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:35,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:35,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:55:35,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:35,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:55:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:35,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:55:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:35,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:35,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:35,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:35,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:55:35,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:55:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:35,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 18:55:35,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:35,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:35,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:35,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:55:35,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:55:35,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:35,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:35,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:55:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:35,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:35,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:55:35,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:35,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:55:35,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:55:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:35,303 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 18:55:35,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71722608] [2020-10-12 18:55:35,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:55:35,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 18:55:35,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483903612] [2020-10-12 18:55:35,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:55:35,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:55:35,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:55:35,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:55:35,307 INFO L87 Difference]: Start difference. First operand 159 states and 255 transitions. Second operand 10 states. [2020-10-12 18:55:35,744 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:55:35,934 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:55:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:55:37,323 INFO L93 Difference]: Finished difference Result 286 states and 450 transitions. [2020-10-12 18:55:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:55:37,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-12 18:55:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:55:37,328 INFO L225 Difference]: With dead ends: 286 [2020-10-12 18:55:37,328 INFO L226 Difference]: Without dead ends: 183 [2020-10-12 18:55:37,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:55:37,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-12 18:55:37,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 159. [2020-10-12 18:55:37,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-12 18:55:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2020-10-12 18:55:37,354 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 61 [2020-10-12 18:55:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:55:37,354 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2020-10-12 18:55:37,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:55:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2020-10-12 18:55:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 18:55:37,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:55:37,358 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, 1, 1, 1, 1] [2020-10-12 18:55:37,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:55:37,358 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:55:37,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:55:37,358 INFO L82 PathProgramCache]: Analyzing trace with hash -664104160, now seen corresponding path program 1 times [2020-10-12 18:55:37,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:55:37,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29235710] [2020-10-12 18:55:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:55:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:37,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:37,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:39,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:42,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:42,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 18:55:42,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:55:42,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 18:55:42,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:42,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:55:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 18:55:42,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:55:42,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:42,610 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:55:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:55:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:42,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:42,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:55:42,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:42,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:55:42,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:42,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:42,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:55:42,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:42,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:55:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:42,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:42,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:42,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:55:42,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:42,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 18:55:42,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:55:42,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:55:42,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:42,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:55:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:42,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:42,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:42,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:42,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:55:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:55:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:55:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:42,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:55:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:42,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:42,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:42,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:42,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:55:42,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:42,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:55:42,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:55:42,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:42,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:55:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:42,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:42,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:42,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:42,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:55:42,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:55:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:55:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:43,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 18:55:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:43,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:43,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:43,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:55:43,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:43,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:55:43,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:55:43,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:55:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:55:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:43,055 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 18:55:43,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29235710] [2020-10-12 18:55:43,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:55:43,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:55:43,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488350587] [2020-10-12 18:55:43,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:55:43,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:55:43,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:55:43,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:55:43,062 INFO L87 Difference]: Start difference. First operand 159 states and 231 transitions. Second operand 13 states. [2020-10-12 18:55:43,260 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:55:43,690 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:55:43,846 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:55:45,908 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:55:46,063 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:55:46,267 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:55:49,204 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-12 18:55:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:55:50,472 INFO L93 Difference]: Finished difference Result 970 states and 1506 transitions. [2020-10-12 18:55:50,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-12 18:55:50,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 84 [2020-10-12 18:55:50,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:55:50,484 INFO L225 Difference]: With dead ends: 970 [2020-10-12 18:55:50,484 INFO L226 Difference]: Without dead ends: 873 [2020-10-12 18:55:50,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=637, Invalid=2119, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 18:55:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-10-12 18:55:50,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 720. [2020-10-12 18:55:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-10-12 18:55:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1100 transitions. [2020-10-12 18:55:50,582 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1100 transitions. Word has length 84 [2020-10-12 18:55:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:55:50,582 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 1100 transitions. [2020-10-12 18:55:50,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:55:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1100 transitions. [2020-10-12 18:55:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 18:55:50,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:55:50,588 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, 1, 1, 1, 1, 1] [2020-10-12 18:55:50,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:55:50,589 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:55:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:55:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1558963741, now seen corresponding path program 1 times [2020-10-12 18:55:50,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:55:50,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663654761] [2020-10-12 18:55:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:55:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:50,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:51,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:55,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:55,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-12 18:55:55,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:55:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:55:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:55:55,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 18:55:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:55:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:55,847 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:55:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:55:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:55,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:55,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:55,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:55:55,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:55,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:55:55,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:55,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:55:55,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:55:55,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:55:55,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:55,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:55:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:55,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:55,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:55,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:55:55,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:55,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 18:55:55,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:55:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:55:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:55,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:55:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:56,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:56,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:56,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:55:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:56,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:55:56,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:55:56,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:55:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:55:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:56,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:56,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:56,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:56,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:56,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:55:56,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:55:56,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:55:56,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:56,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:55:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:56,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:56,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:56,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:56,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:55:56,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:55:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:55:56,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:55:56,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:55:56,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 18:55:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:55:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:55:56,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:55:56,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:55:56,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:55:56,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:55:56,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:55:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:55:56,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:55:56,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:55:56,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:55:56,206 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 18:55:56,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663654761] [2020-10-12 18:55:56,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:55:56,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:55:56,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050400990] [2020-10-12 18:55:56,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:55:56,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:55:56,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:55:56,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:55:56,211 INFO L87 Difference]: Start difference. First operand 720 states and 1100 transitions. Second operand 14 states. [2020-10-12 18:55:56,436 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 18:55:56,865 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:55:57,041 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:55:57,221 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:55:58,097 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:56:00,183 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:56:00,364 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:56:00,598 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-12 18:56:00,774 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:56:00,965 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:56:04,837 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:56:05,095 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:56:08,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:56:08,151 INFO L93 Difference]: Finished difference Result 3160 states and 4945 transitions. [2020-10-12 18:56:08,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-12 18:56:08,152 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-12 18:56:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:56:08,169 INFO L225 Difference]: With dead ends: 3160 [2020-10-12 18:56:08,169 INFO L226 Difference]: Without dead ends: 2502 [2020-10-12 18:56:08,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1138, Invalid=4868, Unknown=0, NotChecked=0, Total=6006 [2020-10-12 18:56:08,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2020-10-12 18:56:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 1366. [2020-10-12 18:56:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1366 states. [2020-10-12 18:56:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2109 transitions. [2020-10-12 18:56:08,282 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2109 transitions. Word has length 85 [2020-10-12 18:56:08,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:56:08,283 INFO L479 AbstractCegarLoop]: Abstraction has 1366 states and 2109 transitions. [2020-10-12 18:56:08,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:56:08,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2109 transitions. [2020-10-12 18:56:08,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 18:56:08,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:56:08,287 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, 1, 1, 1, 1, 1, 1] [2020-10-12 18:56:08,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:56:08,287 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:56:08,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:56:08,288 INFO L82 PathProgramCache]: Analyzing trace with hash 713475383, now seen corresponding path program 1 times [2020-10-12 18:56:08,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:56:08,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774499926] [2020-10-12 18:56:08,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:56:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:08,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:08,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:08,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:09,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:13,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:13,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:56:13,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:56:13,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:56:13,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:56:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 18:56:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:56:13,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:13,503 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:56:13,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:56:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:13,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:13,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:56:13,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:13,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:56:13,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:56:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:13,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:56:13,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:13,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:56:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:56:13,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 18:56:13,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:56:13,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:13,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:56:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:13,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:13,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:13,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:13,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:13,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:56:13,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:13,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:56:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:56:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:13,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:13,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:13,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:13,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:13,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:56:13,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:13,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:13,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:13,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:56:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:56:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:13,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:13,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:13,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:13,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:56:13,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:13,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:13,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:13,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:56:13,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:56:13,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 18:56:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:13,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:13,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:56:13,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:13,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:56:13,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:56:13,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:56:13,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:56:13,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:13,883 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 18:56:13,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774499926] [2020-10-12 18:56:13,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:56:13,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:56:13,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399376123] [2020-10-12 18:56:13,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:56:13,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:56:13,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:56:13,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:56:13,886 INFO L87 Difference]: Start difference. First operand 1366 states and 2109 transitions. Second operand 14 states. [2020-10-12 18:56:14,113 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:56:14,593 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:56:14,779 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:56:14,969 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:56:16,628 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:56:16,812 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:56:17,064 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 18:56:17,264 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:56:21,894 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:56:22,129 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:56:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:56:23,823 INFO L93 Difference]: Finished difference Result 5875 states and 9202 transitions. [2020-10-12 18:56:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-12 18:56:23,829 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 86 [2020-10-12 18:56:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:56:23,858 INFO L225 Difference]: With dead ends: 5875 [2020-10-12 18:56:23,859 INFO L226 Difference]: Without dead ends: 4598 [2020-10-12 18:56:23,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=957, Invalid=3735, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 18:56:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states. [2020-10-12 18:56:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 3454. [2020-10-12 18:56:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3454 states. [2020-10-12 18:56:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5409 transitions. [2020-10-12 18:56:24,171 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5409 transitions. Word has length 86 [2020-10-12 18:56:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:56:24,172 INFO L479 AbstractCegarLoop]: Abstraction has 3454 states and 5409 transitions. [2020-10-12 18:56:24,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:56:24,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5409 transitions. [2020-10-12 18:56:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-12 18:56:24,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:56:24,176 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:56:24,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:56:24,177 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:56:24,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:56:24,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1907040742, now seen corresponding path program 1 times [2020-10-12 18:56:24,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:56:24,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351316878] [2020-10-12 18:56:24,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:56:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:24,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:24,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:26,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:29,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:29,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-12 18:56:29,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:56:29,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 18:56:29,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:56:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 18:56:29,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 18:56:29,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:29,461 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:56:29,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:56:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:29,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:29,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:56:29,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:29,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:56:29,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:56:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:56:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:56:29,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:56:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:29,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:29,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:29,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:56:29,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:29,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 18:56:29,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:29,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:56:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:56:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:56:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:29,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:29,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:29,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:29,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:29,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:56:29,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:29,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:56:29,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:56:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:29,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:29,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:29,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:56:29,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:29,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:56:29,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:29,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:56:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:56:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:56:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:29,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-12 18:56:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:29,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:29,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:29,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:56:29,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:56:29,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:56:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:56:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:56:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:29,831 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 18:56:29,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351316878] [2020-10-12 18:56:29,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:56:29,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:56:29,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081751764] [2020-10-12 18:56:29,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:56:29,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:56:29,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:56:29,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:56:29,845 INFO L87 Difference]: Start difference. First operand 3454 states and 5409 transitions. Second operand 14 states. [2020-10-12 18:56:30,148 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:56:30,684 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:56:30,848 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:56:31,034 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:56:32,940 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:56:33,135 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:56:33,422 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 18:56:33,650 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:56:38,715 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:56:38,894 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:56:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:56:40,526 INFO L93 Difference]: Finished difference Result 11354 states and 17869 transitions. [2020-10-12 18:56:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-12 18:56:40,527 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-12 18:56:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:56:40,585 INFO L225 Difference]: With dead ends: 11354 [2020-10-12 18:56:40,586 INFO L226 Difference]: Without dead ends: 8041 [2020-10-12 18:56:40,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=881, Invalid=3541, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 18:56:40,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8041 states. [2020-10-12 18:56:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8041 to 6080. [2020-10-12 18:56:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2020-10-12 18:56:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9566 transitions. [2020-10-12 18:56:41,252 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9566 transitions. Word has length 87 [2020-10-12 18:56:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:56:41,256 INFO L479 AbstractCegarLoop]: Abstraction has 6080 states and 9566 transitions. [2020-10-12 18:56:41,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:56:41,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9566 transitions. [2020-10-12 18:56:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-12 18:56:41,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:56:41,262 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:56:41,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:56:41,262 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:56:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:56:41,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1138459828, now seen corresponding path program 1 times [2020-10-12 18:56:41,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:56:41,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720735736] [2020-10-12 18:56:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:56:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:41,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:41,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:41,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:46,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:46,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 18:56:46,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:56:46,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:56:46,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:56:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 18:56:46,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:56:46,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:46,517 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:56:46,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:56:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:46,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:46,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:56:46,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:46,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:56:46,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:56:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:46,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:56:46,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:46,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:56:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:46,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:46,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:46,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:56:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 18:56:46,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:56:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:56:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:56:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:46,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:46,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:46,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:46,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:46,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:56:46,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:56:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:46,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:56:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:56:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:46,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:46,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:46,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:56:46,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:46,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 18:56:46,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:56:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:46,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:56:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:46,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 18:56:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:46,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:46,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:46,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:56:46,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:56:46,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:56:46,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:56:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:46,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:46,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:56:46,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:46,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:56:46,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:56:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-12 18:56:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:56:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:46,778 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 18:56:46,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720735736] [2020-10-12 18:56:46,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:56:46,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 18:56:46,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3064110] [2020-10-12 18:56:46,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:56:46,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:56:46,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:56:46,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:56:46,782 INFO L87 Difference]: Start difference. First operand 6080 states and 9566 transitions. Second operand 10 states. [2020-10-12 18:56:46,982 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:56:49,194 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:56:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:56:49,699 INFO L93 Difference]: Finished difference Result 15822 states and 24747 transitions. [2020-10-12 18:56:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:56:49,700 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-12 18:56:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:56:49,761 INFO L225 Difference]: With dead ends: 15822 [2020-10-12 18:56:49,762 INFO L226 Difference]: Without dead ends: 9869 [2020-10-12 18:56:49,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:56:49,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9869 states. [2020-10-12 18:56:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9869 to 8241. [2020-10-12 18:56:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8241 states. [2020-10-12 18:56:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 12847 transitions. [2020-10-12 18:56:50,489 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 12847 transitions. Word has length 88 [2020-10-12 18:56:50,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:56:50,489 INFO L479 AbstractCegarLoop]: Abstraction has 8241 states and 12847 transitions. [2020-10-12 18:56:50,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:56:50,490 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 12847 transitions. [2020-10-12 18:56:50,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-12 18:56:50,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:56:50,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:56:50,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:56:50,496 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:56:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:56:50,496 INFO L82 PathProgramCache]: Analyzing trace with hash 875685367, now seen corresponding path program 1 times [2020-10-12 18:56:50,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:56:50,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326262924] [2020-10-12 18:56:50,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:56:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:50,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:55,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:55,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 18:56:55,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:56:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:56:55,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:56:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 18:56:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:56:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:55,714 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:56:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:56:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:55,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:55,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:55,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:56:55,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:55,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:56:55,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:55,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:56:55,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:55,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:56:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:55,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:56:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:55,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:55,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:56:55,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:55,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 18:56:55,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:56:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:55,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:56:55,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:56:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:55,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:56:55,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:56:55,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:55,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:56:55,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:55,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:56:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:55,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:55,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:55,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:56:55,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:55,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:56:55,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:55,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:56:55,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:56:55,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:56:55,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:55,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:56:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:55,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:56:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:56:55,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:56:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:56:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:56:55,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:56:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:56:55,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:56:55,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:56:55,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:56:55,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:56:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:56:55,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:56:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:56:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:56:55,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:56:55,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:56:55,964 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 18:56:55,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326262924] [2020-10-12 18:56:55,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:56:55,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:56:55,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73266468] [2020-10-12 18:56:55,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:56:55,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:56:55,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:56:55,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:56:55,966 INFO L87 Difference]: Start difference. First operand 8241 states and 12847 transitions. Second operand 13 states. [2020-10-12 18:56:56,340 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-10-12 18:56:56,774 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:56:56,939 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:56:57,147 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-12 18:56:57,496 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:56:57,725 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:56:58,143 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:56:58,973 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:56:59,401 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-12 18:57:00,366 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:57:01,129 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:57:02,128 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-12 18:57:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:57:02,966 INFO L93 Difference]: Finished difference Result 12326 states and 19263 transitions. [2020-10-12 18:57:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 18:57:02,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 90 [2020-10-12 18:57:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:57:03,012 INFO L225 Difference]: With dead ends: 12326 [2020-10-12 18:57:03,012 INFO L226 Difference]: Without dead ends: 9207 [2020-10-12 18:57:03,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=453, Invalid=1527, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 18:57:03,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9207 states. [2020-10-12 18:57:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9207 to 7878. [2020-10-12 18:57:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7878 states. [2020-10-12 18:57:03,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 12299 transitions. [2020-10-12 18:57:03,620 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 12299 transitions. Word has length 90 [2020-10-12 18:57:03,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:57:03,620 INFO L479 AbstractCegarLoop]: Abstraction has 7878 states and 12299 transitions. [2020-10-12 18:57:03,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:57:03,620 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 12299 transitions. [2020-10-12 18:57:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 18:57:03,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:57:03,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:57:03,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:57:03,623 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:57:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:57:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1070128660, now seen corresponding path program 1 times [2020-10-12 18:57:03,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:57:03,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191493936] [2020-10-12 18:57:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:57:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:03,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:03,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:03,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:04,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:04,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:06,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:08,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:08,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 18:57:08,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:57:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:57:08,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:57:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 18:57:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:57:08,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:08,847 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:57:08,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:57:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:08,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:08,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:08,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:57:08,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:57:08,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:57:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:08,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:57:08,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:08,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:57:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:08,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:08,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:57:08,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:57:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:08,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:08,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:08,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:57:08,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:08,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:57:08,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:57:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:57:08,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:57:08,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:57:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:08,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:08,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:57:08,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:57:09,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:57:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:57:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:57:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:09,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:57:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:09,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:09,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:57:09,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:57:09,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:57:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:09,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:57:09,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:09,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:57:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:09,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:09,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:09,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:57:09,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:09,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:57:09,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:09,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:57:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:57:09,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:57:09,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:09,147 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 18:57:09,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191493936] [2020-10-12 18:57:09,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:57:09,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:57:09,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219076077] [2020-10-12 18:57:09,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:57:09,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:57:09,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:57:09,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:57:09,149 INFO L87 Difference]: Start difference. First operand 7878 states and 12299 transitions. Second operand 14 states. [2020-10-12 18:57:09,384 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:57:09,946 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:57:10,137 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:57:11,693 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-12 18:57:12,356 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 159 [2020-10-12 18:57:12,738 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 161 [2020-10-12 18:57:12,949 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:57:13,152 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:57:13,443 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:57:13,719 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:57:14,015 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 18:57:15,037 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-12 18:57:15,381 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-12 18:57:16,712 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-12 18:57:17,359 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:57:17,632 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-12 18:57:18,811 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:57:19,226 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-12 18:57:19,642 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-10-12 18:57:23,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:57:23,085 INFO L93 Difference]: Finished difference Result 19815 states and 31093 transitions. [2020-10-12 18:57:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-12 18:57:23,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-10-12 18:57:23,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:57:23,157 INFO L225 Difference]: With dead ends: 19815 [2020-10-12 18:57:23,157 INFO L226 Difference]: Without dead ends: 17059 [2020-10-12 18:57:23,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1099, Invalid=5063, Unknown=0, NotChecked=0, Total=6162 [2020-10-12 18:57:23,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17059 states. [2020-10-12 18:57:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17059 to 12859. [2020-10-12 18:57:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12859 states. [2020-10-12 18:57:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12859 states to 12859 states and 20103 transitions. [2020-10-12 18:57:24,090 INFO L78 Accepts]: Start accepts. Automaton has 12859 states and 20103 transitions. Word has length 91 [2020-10-12 18:57:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:57:24,091 INFO L479 AbstractCegarLoop]: Abstraction has 12859 states and 20103 transitions. [2020-10-12 18:57:24,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:57:24,091 INFO L276 IsEmpty]: Start isEmpty. Operand 12859 states and 20103 transitions. [2020-10-12 18:57:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 18:57:24,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:57:24,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:57:24,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:57:24,093 INFO L427 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:57:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:57:24,093 INFO L82 PathProgramCache]: Analyzing trace with hash -411387321, now seen corresponding path program 1 times [2020-10-12 18:57:24,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:57:24,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094322557] [2020-10-12 18:57:24,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:57:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:24,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:24,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:24,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:29,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:29,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 18:57:29,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:57:29,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:57:29,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:29,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:57:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 18:57:29,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:57:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:29,347 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:57:29,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:57:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:29,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:29,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:29,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:57:29,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:29,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:57:29,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:57:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:29,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:57:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:57:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:29,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:29,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:57:29,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:57:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:57:29,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:57:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:57:29,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:57:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:29,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:29,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:57:29,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:29,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 18:57:29,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:57:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:57:29,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:57:29,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:29,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:57:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:29,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:29,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:29,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:57:29,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:29,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 18:57:29,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:29,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:57:29,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:57:29,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:57:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:29,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:57:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:29,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:29,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:29,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:57:29,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:29,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:57:29,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:57:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:57:29,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:57:29,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:29,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 18:57:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:29,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:29,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:57:29,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:57:29,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:57:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:57:29,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:57:29,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:29,723 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 18:57:29,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094322557] [2020-10-12 18:57:29,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:57:29,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 18:57:29,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375019694] [2020-10-12 18:57:29,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:57:29,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:57:29,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:57:29,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:57:29,726 INFO L87 Difference]: Start difference. First operand 12859 states and 20103 transitions. Second operand 13 states. [2020-10-12 18:57:29,944 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:57:30,422 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:57:30,612 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:57:31,393 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-12 18:57:32,371 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-12 18:57:33,141 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 160 [2020-10-12 18:57:33,996 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-10-12 18:57:34,571 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-12 18:57:34,864 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-12 18:57:35,140 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2020-10-12 18:57:35,521 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 165 [2020-10-12 18:57:35,743 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-12 18:57:36,102 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-12 18:57:36,602 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-12 18:57:36,924 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-12 18:57:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:57:37,278 INFO L93 Difference]: Finished difference Result 27614 states and 43233 transitions. [2020-10-12 18:57:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 18:57:37,280 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-10-12 18:57:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:57:37,335 INFO L225 Difference]: With dead ends: 27614 [2020-10-12 18:57:37,335 INFO L226 Difference]: Without dead ends: 14996 [2020-10-12 18:57:37,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:57:37,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14996 states. [2020-10-12 18:57:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14996 to 12859. [2020-10-12 18:57:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12859 states. [2020-10-12 18:57:38,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12859 states to 12859 states and 20075 transitions. [2020-10-12 18:57:38,268 INFO L78 Accepts]: Start accepts. Automaton has 12859 states and 20075 transitions. Word has length 91 [2020-10-12 18:57:38,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:57:38,269 INFO L479 AbstractCegarLoop]: Abstraction has 12859 states and 20075 transitions. [2020-10-12 18:57:38,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:57:38,269 INFO L276 IsEmpty]: Start isEmpty. Operand 12859 states and 20075 transitions. [2020-10-12 18:57:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 18:57:38,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:57:38,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:57:38,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:57:38,272 INFO L427 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:57:38,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:57:38,272 INFO L82 PathProgramCache]: Analyzing trace with hash -89572114, now seen corresponding path program 1 times [2020-10-12 18:57:38,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:57:38,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228477112] [2020-10-12 18:57:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:57:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:38,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:38,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:38,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:38,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:38,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-12 18:57:43,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:57:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:57:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:57:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 18:57:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:57:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:43,476 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:57:43,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:57:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:43,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:43,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:43,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:57:43,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:43,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:57:43,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:57:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:43,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:57:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:43,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:57:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:43,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:43,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:57:43,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:57:43,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:57:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:57:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:57:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:43,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:43,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:57:43,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:43,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:57:43,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:57:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:57:43,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:57:43,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:57:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:43,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:43,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:57:43,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:57:43,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:57:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:43,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:57:43,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:57:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:43,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:43,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:43,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:57:43,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:43,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:57:43,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:43,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:57:43,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:43,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:57:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:43,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:57:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:43,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:43,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:57:43,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:43,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:57:43,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:43,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:57:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-12 18:57:43,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:57:43,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:43,678 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 18:57:43,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228477112] [2020-10-12 18:57:43,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:57:43,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:57:43,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169254064] [2020-10-12 18:57:43,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:57:43,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:57:43,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:57:43,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:57:43,680 INFO L87 Difference]: Start difference. First operand 12859 states and 20075 transitions. Second operand 11 states. [2020-10-12 18:57:44,038 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 158 [2020-10-12 18:57:44,476 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:57:45,033 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-12 18:57:45,374 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-12 18:57:45,852 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-12 18:57:47,291 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:57:48,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:57:48,982 INFO L93 Difference]: Finished difference Result 26475 states and 41441 transitions. [2020-10-12 18:57:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:57:48,983 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2020-10-12 18:57:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:57:49,043 INFO L225 Difference]: With dead ends: 26475 [2020-10-12 18:57:49,044 INFO L226 Difference]: Without dead ends: 17085 [2020-10-12 18:57:49,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:57:49,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17085 states. [2020-10-12 18:57:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17085 to 14645. [2020-10-12 18:57:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14645 states. [2020-10-12 18:57:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14645 states to 14645 states and 22703 transitions. [2020-10-12 18:57:49,806 INFO L78 Accepts]: Start accepts. Automaton has 14645 states and 22703 transitions. Word has length 91 [2020-10-12 18:57:49,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:57:49,807 INFO L479 AbstractCegarLoop]: Abstraction has 14645 states and 22703 transitions. [2020-10-12 18:57:49,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:57:49,807 INFO L276 IsEmpty]: Start isEmpty. Operand 14645 states and 22703 transitions. [2020-10-12 18:57:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 18:57:49,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:57:49,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:57:49,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:57:49,810 INFO L427 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:57:49,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:57:49,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1312506290, now seen corresponding path program 1 times [2020-10-12 18:57:49,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:57:49,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62038900] [2020-10-12 18:57:49,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:57:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:50,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:50,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:50,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:50,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:54,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:54,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 18:57:54,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:57:54,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:57:54,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:54,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:57:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:57:54,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:57:54,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:55,010 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:57:55,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:57:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:55,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:55,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:55,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:57:55,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:55,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:57:55,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:57:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:55,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:57:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:55,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:57:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:55,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:55,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:57:55,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:55,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:57:55,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:55,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:57:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:55,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:57:55,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:55,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:57:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:55,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:55,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:57:55,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:57:55,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:57:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:57:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:55,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:57:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:55,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:55,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:55,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:57:55,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:55,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:57:55,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:57:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:57:55,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:57:55,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:55,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:57:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:55,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:55,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:55,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:57:55,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:55,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:57:55,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:57:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:57:55,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:57:55,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:57:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:55,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:57:55,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:57:55,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:57:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:57:55,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:57:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:57:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-12 18:57:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:57:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:57:55,229 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 18:57:55,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62038900] [2020-10-12 18:57:55,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:57:55,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 18:57:55,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342837182] [2020-10-12 18:57:55,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:57:55,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:57:55,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:57:55,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:57:55,231 INFO L87 Difference]: Start difference. First operand 14645 states and 22703 transitions. Second operand 10 states. [2020-10-12 18:57:55,407 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:57:57,338 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:57:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:57:58,267 INFO L93 Difference]: Finished difference Result 38676 states and 59747 transitions. [2020-10-12 18:57:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:57:58,268 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-10-12 18:57:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:57:58,345 INFO L225 Difference]: With dead ends: 38676 [2020-10-12 18:57:58,345 INFO L226 Difference]: Without dead ends: 24244 [2020-10-12 18:57:58,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:57:58,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24244 states. [2020-10-12 18:57:59,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24244 to 20051. [2020-10-12 18:57:59,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20051 states. [2020-10-12 18:57:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 30886 transitions. [2020-10-12 18:57:59,367 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 30886 transitions. Word has length 92 [2020-10-12 18:57:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:57:59,367 INFO L479 AbstractCegarLoop]: Abstraction has 20051 states and 30886 transitions. [2020-10-12 18:57:59,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:57:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 30886 transitions. [2020-10-12 18:57:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 18:57:59,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:57:59,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:57:59,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:57:59,370 INFO L427 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:57:59,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:57:59,370 INFO L82 PathProgramCache]: Analyzing trace with hash 609819040, now seen corresponding path program 1 times [2020-10-12 18:57:59,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:57:59,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427108666] [2020-10-12 18:57:59,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:57:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:57:59,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:59,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:57:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:04,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:04,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 18:58:04,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:58:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:58:04,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:58:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 18:58:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:58:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:04,581 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:58:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:58:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:04,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:04,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:04,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:58:04,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:04,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:58:04,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:58:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:58:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:58:04,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:04,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:58:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:04,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:04,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:04,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:58:04,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:04,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:58:04,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:04,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:58:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:58:04,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 18:58:04,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:58:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:04,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:04,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:04,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 18:58:04,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:58:04,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:58:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:58:04,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:58:04,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:58:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:04,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:58:04,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:04,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:58:04,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:58:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:58:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:58:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:04,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:58:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:04,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:04,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:04,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:58:04,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:58:04,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:58:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 18:58:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:58:04,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:58:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:04,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:04,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:04,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:58:04,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:04,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:58:04,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:58:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 18:58:04,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:58:04,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:04,777 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 18:58:04,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427108666] [2020-10-12 18:58:04,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:58:04,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 18:58:04,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526299005] [2020-10-12 18:58:04,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:58:04,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:58:04,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:58:04,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:58:04,779 INFO L87 Difference]: Start difference. First operand 20051 states and 30886 transitions. Second operand 9 states. [2020-10-12 18:58:04,972 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:58:06,660 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:58:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:58:08,054 INFO L93 Difference]: Finished difference Result 49021 states and 75373 transitions. [2020-10-12 18:58:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:58:08,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-12 18:58:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:58:08,149 INFO L225 Difference]: With dead ends: 49021 [2020-10-12 18:58:08,149 INFO L226 Difference]: Without dead ends: 29128 [2020-10-12 18:58:08,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:58:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29128 states. [2020-10-12 18:58:09,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29128 to 24094. [2020-10-12 18:58:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24094 states. [2020-10-12 18:58:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24094 states to 24094 states and 36560 transitions. [2020-10-12 18:58:09,739 INFO L78 Accepts]: Start accepts. Automaton has 24094 states and 36560 transitions. Word has length 94 [2020-10-12 18:58:09,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:58:09,740 INFO L479 AbstractCegarLoop]: Abstraction has 24094 states and 36560 transitions. [2020-10-12 18:58:09,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:58:09,740 INFO L276 IsEmpty]: Start isEmpty. Operand 24094 states and 36560 transitions. [2020-10-12 18:58:09,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 18:58:09,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:58:09,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:58:09,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:58:09,743 INFO L427 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:58:09,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:58:09,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1712367837, now seen corresponding path program 1 times [2020-10-12 18:58:09,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:58:09,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297049539] [2020-10-12 18:58:09,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:58:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:09,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:09,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:09,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:09,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:14,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:14,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 18:58:14,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 18:58:14,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 18:58:14,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:58:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-12 18:58:14,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:58:14,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:14,964 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:58:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:58:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:14,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:14,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:58:14,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:14,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:58:14,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:58:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:58:14,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:58:14,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:58:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:14,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:14,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:14,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:58:14,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:14,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:58:14,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:58:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:58:14,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-12 18:58:14,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:15,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:58:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:15,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:15,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:58:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 18:58:15,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:58:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:58:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:58:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:15,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:58:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:15,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:15,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:15,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:58:15,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 18:58:15,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:58:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:58:15,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:58:15,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:58:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:15,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:15,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:15,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:58:15,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:58:15,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:58:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:58:15,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:58:15,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:15,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 18:58:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:15,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:15,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:15,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:58:15,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:58:15,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:58:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:58:15,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:58:15,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:15,249 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 18:58:15,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297049539] [2020-10-12 18:58:15,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:58:15,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:58:15,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430708786] [2020-10-12 18:58:15,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:58:15,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:58:15,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:58:15,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:58:15,251 INFO L87 Difference]: Start difference. First operand 24094 states and 36560 transitions. Second operand 14 states. [2020-10-12 18:58:15,486 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:58:16,026 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:58:16,215 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:58:16,673 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:58:17,210 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-10-12 18:58:17,399 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-12 18:58:18,047 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-12 18:58:18,506 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:58:18,950 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 161 [2020-10-12 18:58:19,397 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-12 18:58:19,894 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-12 18:58:20,564 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-12 18:58:20,799 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:58:21,139 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:58:21,880 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:58:22,479 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 18:58:22,717 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 18:58:22,910 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:58:26,692 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:58:27,250 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:58:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:58:30,124 INFO L93 Difference]: Finished difference Result 61311 states and 94193 transitions. [2020-10-12 18:58:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-12 18:58:30,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-12 18:58:30,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:58:30,243 INFO L225 Difference]: With dead ends: 61311 [2020-10-12 18:58:30,243 INFO L226 Difference]: Without dead ends: 45750 [2020-10-12 18:58:30,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2604 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1255, Invalid=6055, Unknown=0, NotChecked=0, Total=7310 [2020-10-12 18:58:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45750 states. [2020-10-12 18:58:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45750 to 38277. [2020-10-12 18:58:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38277 states. [2020-10-12 18:58:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38277 states to 38277 states and 58467 transitions. [2020-10-12 18:58:32,388 INFO L78 Accepts]: Start accepts. Automaton has 38277 states and 58467 transitions. Word has length 94 [2020-10-12 18:58:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:58:32,389 INFO L479 AbstractCegarLoop]: Abstraction has 38277 states and 58467 transitions. [2020-10-12 18:58:32,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:58:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 38277 states and 58467 transitions. [2020-10-12 18:58:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 18:58:32,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:58:32,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:58:32,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:58:32,392 INFO L427 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:58:32,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:58:32,393 INFO L82 PathProgramCache]: Analyzing trace with hash 201230766, now seen corresponding path program 1 times [2020-10-12 18:58:32,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:58:32,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515334970] [2020-10-12 18:58:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:58:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:32,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:32,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:32,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:32,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:32,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:34,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:37,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 18:58:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:58:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:58:37,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:58:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 18:58:37,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:58:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:37,626 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:58:37,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:58:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:37,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:37,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:37,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:58:37,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:58:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:58:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:58:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:58:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:37,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:58:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:37,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:37,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:58:37,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:58:37,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:58:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:58:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:58:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:37,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:58:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:37,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:37,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:37,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-12 18:58:37,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:58:37,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:58:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:58:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:58:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:37,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:58:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:37,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:37,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:37,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:58:37,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:58:37,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:58:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:58:37,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:58:37,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:58:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:37,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:37,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:37,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:58:37,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:58:37,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:37,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:58:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:58:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 18:58:37,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:37,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-12 18:58:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:37,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:58:37,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:58:37,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:58:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:58:37,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:58:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:58:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 18:58:37,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:58:37,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:58:37,904 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 18:58:37,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515334970] [2020-10-12 18:58:37,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:58:37,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 18:58:37,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461344335] [2020-10-12 18:58:37,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:58:37,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:58:37,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:58:37,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:58:37,907 INFO L87 Difference]: Start difference. First operand 38277 states and 58467 transitions. Second operand 14 states. [2020-10-12 18:58:38,128 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:58:38,627 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:58:38,821 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-12 18:58:39,230 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:58:39,734 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 159 [2020-10-12 18:58:39,917 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-12 18:58:40,275 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-12 18:58:40,625 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-12 18:58:41,424 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 161 [2020-10-12 18:58:41,974 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-12 18:58:42,539 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-12 18:58:43,254 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-12 18:58:44,170 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:58:44,369 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:58:44,686 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-12 18:58:44,885 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 18:58:45,071 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 18:58:45,278 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 18:58:51,787 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-12 18:58:52,007 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-12 18:58:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:58:55,407 INFO L93 Difference]: Finished difference Result 105152 states and 162525 transitions. [2020-10-12 18:58:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-12 18:58:55,408 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 95 [2020-10-12 18:58:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:58:55,623 INFO L225 Difference]: With dead ends: 105152 [2020-10-12 18:58:55,623 INFO L226 Difference]: Without dead ends: 77860 [2020-10-12 18:58:55,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2590 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=1255, Invalid=6055, Unknown=0, NotChecked=0, Total=7310 [2020-10-12 18:58:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77860 states. [2020-10-12 18:58:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77860 to 63039. [2020-10-12 18:58:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63039 states. [2020-10-12 18:58:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63039 states to 63039 states and 97122 transitions. [2020-10-12 18:58:59,005 INFO L78 Accepts]: Start accepts. Automaton has 63039 states and 97122 transitions. Word has length 95 [2020-10-12 18:58:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:58:59,005 INFO L479 AbstractCegarLoop]: Abstraction has 63039 states and 97122 transitions. [2020-10-12 18:58:59,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:58:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 63039 states and 97122 transitions. [2020-10-12 18:58:59,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-12 18:58:59,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:58:59,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:58:59,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:58:59,008 INFO L427 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:58:59,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:58:59,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2121586475, now seen corresponding path program 1 times [2020-10-12 18:58:59,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:58:59,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962861794] [2020-10-12 18:58:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:58:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:58:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:59,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:59,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:59,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:58:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:59:04,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:59:04,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-12 18:59:04,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 18:59:04,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:59:04,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:59:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:59:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-12 18:59:04,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 18:59:04,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:59:04,234 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-12 18:59:04,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:59:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:59:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:59:04,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:59:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:59:04,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:59:04,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:59:04,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:59:04,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:59:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:59:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:59:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:59:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 18:59:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:59:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:59:04,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:59:04,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 18:59:04,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:59:04,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:59:04,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:59:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:59:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:59:04,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 18:59:04,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:59:04,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:59:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:59:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:59:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:59:04,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:59:04,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:59:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 18:59:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:59:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:59:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 18:59:04,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:59:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:59:04,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-12 18:59:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:59:04,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:59:04,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:59:04,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:59:04,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:59:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:59:04,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:59:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:59:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:59:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:59:04,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:59:04,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:59:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:59:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:59:04,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:59:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:59:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:59:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:59:04,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:59:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:59:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:59:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:59:04,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:59:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:59:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:59:04,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:59:04,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:59:04,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:59:04,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:59:04,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:59:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 18:59:04,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:59:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:59:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-12 18:59:04,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:59:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:59:05,702 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 18:59:05,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962861794] [2020-10-12 18:59:05,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:59:05,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:59:05,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998185080] [2020-10-12 18:59:05,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:59:05,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:59:05,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:59:05,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:59:05,704 INFO L87 Difference]: Start difference. First operand 63039 states and 97122 transitions. Second operand 11 states. [2020-10-12 18:59:05,894 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 18:59:06,491 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-12 18:59:06,762 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 156