/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:56:10,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:56:10,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:56:10,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:56:10,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:56:10,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:56:10,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:56:10,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:56:10,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:56:10,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:56:10,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:56:10,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:56:10,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:56:10,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:56:10,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:56:10,427 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:56:10,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:56:10,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:56:10,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:56:10,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:56:10,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:56:10,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:56:10,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:56:10,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:56:10,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:56:10,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:56:10,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:56:10,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:56:10,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:56:10,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:56:10,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:56:10,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:56:10,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:56:10,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:56:10,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:56:10,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:56:10,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:56:10,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:56:10,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:56:10,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:56:10,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:56:10,459 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 [2020-10-13 13:56:10,505 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:56:10,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:56:10,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:56:10,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:56:10,507 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:56:10,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:56:10,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:56:10,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:56:10,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:56:10,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:56:10,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:56:10,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:56:10,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:56:10,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:56:10,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:56:10,509 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:56:10,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:56:10,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:56:10,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:56:10,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:56:10,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:56:10,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:56:10,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:56:10,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:56:10,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:56:10,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:56:10,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:56:10,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:56:10,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:56:10,512 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:56:10,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:56:10,838 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:56:10,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:56:10,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:56:10,843 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:56:10,844 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 13:56:10,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0128c0c99/d32b401f12594d5f84f1367f5789684a/FLAGcfda77871 [2020-10-13 13:56:11,459 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:56:11,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 13:56:11,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0128c0c99/d32b401f12594d5f84f1367f5789684a/FLAGcfda77871 [2020-10-13 13:56:11,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0128c0c99/d32b401f12594d5f84f1367f5789684a [2020-10-13 13:56:11,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:56:11,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:56:11,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:56:11,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:56:11,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:56:11,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:56:11" (1/1) ... [2020-10-13 13:56:11,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef9cdb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:11, skipping insertion in model container [2020-10-13 13:56:11,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:56:11" (1/1) ... [2020-10-13 13:56:11,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:56:11,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:56:12,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:56:12,375 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:56:12,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:56:12,577 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:56:12,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12 WrapperNode [2020-10-13 13:56:12,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:56:12,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:56:12,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:56:12,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:56:12,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (1/1) ... [2020-10-13 13:56:12,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (1/1) ... [2020-10-13 13:56:12,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (1/1) ... [2020-10-13 13:56:12,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (1/1) ... [2020-10-13 13:56:12,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (1/1) ... [2020-10-13 13:56:12,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (1/1) ... [2020-10-13 13:56:12,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (1/1) ... [2020-10-13 13:56:12,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:56:12,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:56:12,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:56:12,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:56:12,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (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 [2020-10-13 13:56:12,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:56:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:56:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:56:12,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:56:12,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:56:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:56:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 13:56:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:56:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:56:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:56:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:56:12,755 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:56:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:56:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:56:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:56:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:56:12,756 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:56:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:56:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:56:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:56:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:56:12,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:56:14,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:56:14,137 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:56:14,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:56:14 BoogieIcfgContainer [2020-10-13 13:56:14,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:56:14,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:56:14,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:56:14,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:56:14,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:56:11" (1/3) ... [2020-10-13 13:56:14,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bf5660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:56:14, skipping insertion in model container [2020-10-13 13:56:14,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:56:12" (2/3) ... [2020-10-13 13:56:14,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bf5660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:56:14, skipping insertion in model container [2020-10-13 13:56:14,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:56:14" (3/3) ... [2020-10-13 13:56:14,152 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-13 13:56:14,163 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:56:14,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:56:14,185 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:56:14,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:56:14,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:56:14,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:56:14,213 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:56:14,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:56:14,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:56:14,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:56:14,214 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:56:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states. [2020-10-13 13:56:14,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 13:56:14,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:14,259 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, 1, 1, 1, 1, 1] [2020-10-13 13:56:14,259 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:14,266 INFO L82 PathProgramCache]: Analyzing trace with hash -48220835, now seen corresponding path program 1 times [2020-10-13 13:56:14,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:14,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846368142] [2020-10-13 13:56:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:14,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:15,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:16,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:19,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:19,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 13:56:19,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:56:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 13:56:19,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:19,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-13 13:56:19,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 13:56:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:56:20,533 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:56:20,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:20,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:20,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:20,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:20,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:20,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:56:20,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:20,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:56:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:20,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846368142] [2020-10-13 13:56:20,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:20,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:20,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509317450] [2020-10-13 13:56:20,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:20,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:20,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:20,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:20,665 INFO L87 Difference]: Start difference. First operand 319 states. Second operand 4 states. [2020-10-13 13:56:21,223 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:56:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:23,240 INFO L93 Difference]: Finished difference Result 584 states and 1004 transitions. [2020-10-13 13:56:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:23,242 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-13 13:56:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:23,271 INFO L225 Difference]: With dead ends: 584 [2020-10-13 13:56:23,271 INFO L226 Difference]: Without dead ends: 438 [2020-10-13 13:56:23,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:23,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-13 13:56:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 435. [2020-10-13 13:56:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-13 13:56:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 726 transitions. [2020-10-13 13:56:23,372 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 726 transitions. Word has length 102 [2020-10-13 13:56:23,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:23,373 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 726 transitions. [2020-10-13 13:56:23,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:23,373 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 726 transitions. [2020-10-13 13:56:23,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:56:23,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:23,379 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:23,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:56:23,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:23,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:23,381 INFO L82 PathProgramCache]: Analyzing trace with hash 346786599, now seen corresponding path program 1 times [2020-10-13 13:56:23,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:23,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873273491] [2020-10-13 13:56:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:23,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:23,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:24,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:26,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:28,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:28,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 13:56:28,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:56:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 13:56:28,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 13:56:28,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:56:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:56:28,987 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:56:28,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:29,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:29,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:29,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:56:29,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:29,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:29,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:56:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:29,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873273491] [2020-10-13 13:56:29,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:29,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:29,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011357554] [2020-10-13 13:56:29,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:29,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:29,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:29,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:29,094 INFO L87 Difference]: Start difference. First operand 435 states and 726 transitions. Second operand 4 states. [2020-10-13 13:56:29,632 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:56:31,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:31,477 INFO L93 Difference]: Finished difference Result 925 states and 1542 transitions. [2020-10-13 13:56:31,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:31,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-13 13:56:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:31,485 INFO L225 Difference]: With dead ends: 925 [2020-10-13 13:56:31,485 INFO L226 Difference]: Without dead ends: 671 [2020-10-13 13:56:31,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-13 13:56:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 667. [2020-10-13 13:56:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2020-10-13 13:56:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1110 transitions. [2020-10-13 13:56:31,553 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1110 transitions. Word has length 105 [2020-10-13 13:56:31,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:31,554 INFO L479 AbstractCegarLoop]: Abstraction has 667 states and 1110 transitions. [2020-10-13 13:56:31,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1110 transitions. [2020-10-13 13:56:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:56:31,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:31,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:31,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:56:31,568 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:31,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash -674430719, now seen corresponding path program 1 times [2020-10-13 13:56:31,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:31,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000717303] [2020-10-13 13:56:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:31,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:32,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:32,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:36,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:36,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:56:36,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:56:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:56:36,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 13:56:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 13:56:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:37,137 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:56:37,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:37,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:37,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:37,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:56:37,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:37,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:37,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000717303] [2020-10-13 13:56:37,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:37,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:37,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877812980] [2020-10-13 13:56:37,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:37,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:37,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:37,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:37,189 INFO L87 Difference]: Start difference. First operand 667 states and 1110 transitions. Second operand 4 states. [2020-10-13 13:56:37,584 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:56:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:39,414 INFO L93 Difference]: Finished difference Result 1603 states and 2660 transitions. [2020-10-13 13:56:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:39,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-10-13 13:56:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:39,423 INFO L225 Difference]: With dead ends: 1603 [2020-10-13 13:56:39,424 INFO L226 Difference]: Without dead ends: 1117 [2020-10-13 13:56:39,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:39,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2020-10-13 13:56:39,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1111. [2020-10-13 13:56:39,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-13 13:56:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1838 transitions. [2020-10-13 13:56:39,483 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1838 transitions. Word has length 108 [2020-10-13 13:56:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:39,484 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1838 transitions. [2020-10-13 13:56:39,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1838 transitions. [2020-10-13 13:56:39,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-13 13:56:39,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:39,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:39,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:56:39,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:39,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:39,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1296623741, now seen corresponding path program 1 times [2020-10-13 13:56:39,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:39,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074674277] [2020-10-13 13:56:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:39,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:40,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:44,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:44,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 13:56:44,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:56:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:56:44,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:44,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:56:44,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 13:56:44,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:56:44,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:56:45,081 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:56:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:45,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:56:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:45,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:56:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:45,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074674277] [2020-10-13 13:56:45,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:45,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:56:45,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720351789] [2020-10-13 13:56:45,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:56:45,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:45,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:56:45,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:56:45,185 INFO L87 Difference]: Start difference. First operand 1111 states and 1838 transitions. Second operand 4 states. [2020-10-13 13:56:45,761 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:56:47,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:47,871 INFO L93 Difference]: Finished difference Result 2899 states and 4776 transitions. [2020-10-13 13:56:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:56:47,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-10-13 13:56:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:47,885 INFO L225 Difference]: With dead ends: 2899 [2020-10-13 13:56:47,885 INFO L226 Difference]: Without dead ends: 1969 [2020-10-13 13:56:47,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:56:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2020-10-13 13:56:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1959. [2020-10-13 13:56:47,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2020-10-13 13:56:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3214 transitions. [2020-10-13 13:56:47,989 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3214 transitions. Word has length 111 [2020-10-13 13:56:47,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:47,990 INFO L479 AbstractCegarLoop]: Abstraction has 1959 states and 3214 transitions. [2020-10-13 13:56:47,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:56:47,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3214 transitions. [2020-10-13 13:56:47,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 13:56:47,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:47,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:47,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:56:47,994 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:47,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:47,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2070817957, now seen corresponding path program 1 times [2020-10-13 13:56:47,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:47,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684896280] [2020-10-13 13:56:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:48,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:49,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:49,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:53,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:56:53,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:56:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:56:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:56:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 13:56:53,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 13:56:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:53,519 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:56:53,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:56:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:53,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:53,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:56:53,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:56:53,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:56:53,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:56:53,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:56:53,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:56:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:56:53,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:56:53,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:56:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:56:53,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684896280] [2020-10-13 13:56:53,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:56:53,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:56:53,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177777053] [2020-10-13 13:56:53,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:56:53,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:56:53,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:56:53,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:56:53,581 INFO L87 Difference]: Start difference. First operand 1959 states and 3214 transitions. Second operand 7 states. [2020-10-13 13:56:54,013 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 255 [2020-10-13 13:56:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:56:56,430 INFO L93 Difference]: Finished difference Result 10215 states and 16890 transitions. [2020-10-13 13:56:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:56:56,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-13 13:56:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:56:56,488 INFO L225 Difference]: With dead ends: 10215 [2020-10-13 13:56:56,488 INFO L226 Difference]: Without dead ends: 8437 [2020-10-13 13:56:56,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:56:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8437 states. [2020-10-13 13:56:56,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8437 to 3617. [2020-10-13 13:56:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3617 states. [2020-10-13 13:56:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 5929 transitions. [2020-10-13 13:56:56,821 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 5929 transitions. Word has length 114 [2020-10-13 13:56:56,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:56:56,826 INFO L479 AbstractCegarLoop]: Abstraction has 3617 states and 5929 transitions. [2020-10-13 13:56:56,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:56:56,826 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 5929 transitions. [2020-10-13 13:56:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 13:56:56,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:56:56,830 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:56:56,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:56:56,831 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:56:56,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:56:56,831 INFO L82 PathProgramCache]: Analyzing trace with hash -295321087, now seen corresponding path program 1 times [2020-10-13 13:56:56,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:56:56,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429622908] [2020-10-13 13:56:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:56:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:56:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:56,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:56:58,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:01,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-13 13:57:01,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:57:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:57:01,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 13:57:01,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:57:01,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:02,246 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:57:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:02,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:02,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:02,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:02,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:57:02,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:02,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:02,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429622908] [2020-10-13 13:57:02,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:02,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:02,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050107109] [2020-10-13 13:57:02,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:02,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:02,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:02,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:02,299 INFO L87 Difference]: Start difference. First operand 3617 states and 5929 transitions. Second operand 5 states. [2020-10-13 13:57:02,702 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:57:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:04,930 INFO L93 Difference]: Finished difference Result 10597 states and 17467 transitions. [2020-10-13 13:57:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:57:04,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-13 13:57:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:04,968 INFO L225 Difference]: With dead ends: 10597 [2020-10-13 13:57:04,968 INFO L226 Difference]: Without dead ends: 7161 [2020-10-13 13:57:04,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:57:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7161 states. [2020-10-13 13:57:05,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7161 to 5372. [2020-10-13 13:57:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5372 states. [2020-10-13 13:57:05,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 8823 transitions. [2020-10-13 13:57:05,295 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 8823 transitions. Word has length 115 [2020-10-13 13:57:05,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:05,295 INFO L479 AbstractCegarLoop]: Abstraction has 5372 states and 8823 transitions. [2020-10-13 13:57:05,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:05,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 8823 transitions. [2020-10-13 13:57:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 13:57:05,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:05,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:05,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:57:05,300 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:05,300 INFO L82 PathProgramCache]: Analyzing trace with hash -626629396, now seen corresponding path program 1 times [2020-10-13 13:57:05,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:05,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176727809] [2020-10-13 13:57:05,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:05,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:06,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:57:10,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:57:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:57:10,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:10,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-13 13:57:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:57:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:10,728 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:57:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:10,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:10,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:10,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:10,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:57:10,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:10,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:10,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:10,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176727809] [2020-10-13 13:57:10,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:10,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:10,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215826295] [2020-10-13 13:57:10,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:10,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:10,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:10,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:10,792 INFO L87 Difference]: Start difference. First operand 5372 states and 8823 transitions. Second operand 5 states. [2020-10-13 13:57:11,121 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:57:13,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:13,053 INFO L93 Difference]: Finished difference Result 15769 states and 25973 transitions. [2020-10-13 13:57:13,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:57:13,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-13 13:57:13,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:13,096 INFO L225 Difference]: With dead ends: 15769 [2020-10-13 13:57:13,097 INFO L226 Difference]: Without dead ends: 10578 [2020-10-13 13:57:13,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:57:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2020-10-13 13:57:13,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 7951. [2020-10-13 13:57:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7951 states. [2020-10-13 13:57:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7951 states to 7951 states and 13048 transitions. [2020-10-13 13:57:13,677 INFO L78 Accepts]: Start accepts. Automaton has 7951 states and 13048 transitions. Word has length 116 [2020-10-13 13:57:13,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:13,677 INFO L479 AbstractCegarLoop]: Abstraction has 7951 states and 13048 transitions. [2020-10-13 13:57:13,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:13,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7951 states and 13048 transitions. [2020-10-13 13:57:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 13:57:13,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:13,685 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:13,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:57:13,686 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:13,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:13,686 INFO L82 PathProgramCache]: Analyzing trace with hash -877902609, now seen corresponding path program 1 times [2020-10-13 13:57:13,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:13,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741888032] [2020-10-13 13:57:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:13,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:14,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:15,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:16,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:18,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:18,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:57:18,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:57:18,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:57:18,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-13 13:57:18,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:57:18,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:19,087 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:57:19,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:19,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:19,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:19,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:19,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:57:19,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:19,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:19,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:19,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741888032] [2020-10-13 13:57:19,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:19,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:19,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528026703] [2020-10-13 13:57:19,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:19,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:19,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:19,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:19,128 INFO L87 Difference]: Start difference. First operand 7951 states and 13048 transitions. Second operand 4 states. [2020-10-13 13:57:19,517 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:57:22,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:22,124 INFO L93 Difference]: Finished difference Result 17581 states and 29019 transitions. [2020-10-13 13:57:22,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:22,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-13 13:57:22,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:22,152 INFO L225 Difference]: With dead ends: 17581 [2020-10-13 13:57:22,152 INFO L226 Difference]: Without dead ends: 12133 [2020-10-13 13:57:22,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:22,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12133 states. [2020-10-13 13:57:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12133 to 12131. [2020-10-13 13:57:22,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12131 states. [2020-10-13 13:57:22,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12131 states to 12131 states and 19927 transitions. [2020-10-13 13:57:22,753 INFO L78 Accepts]: Start accepts. Automaton has 12131 states and 19927 transitions. Word has length 117 [2020-10-13 13:57:22,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:22,753 INFO L479 AbstractCegarLoop]: Abstraction has 12131 states and 19927 transitions. [2020-10-13 13:57:22,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:57:22,753 INFO L276 IsEmpty]: Start isEmpty. Operand 12131 states and 19927 transitions. [2020-10-13 13:57:22,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 13:57:22,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:22,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:22,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:57:22,757 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:22,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:22,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1174157249, now seen corresponding path program 1 times [2020-10-13 13:57:22,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:22,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642077093] [2020-10-13 13:57:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:24,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:24,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:27,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:27,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:57:27,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:57:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:57:27,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 13:57:27,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:57:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:28,142 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:57:28,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:28,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:28,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:28,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:57:28,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:28,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:28,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:28,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642077093] [2020-10-13 13:57:28,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:28,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:28,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018167377] [2020-10-13 13:57:28,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:28,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:28,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:28,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:28,178 INFO L87 Difference]: Start difference. First operand 12131 states and 19927 transitions. Second operand 4 states. [2020-10-13 13:57:28,544 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:57:30,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:30,939 INFO L93 Difference]: Finished difference Result 23607 states and 38892 transitions. [2020-10-13 13:57:30,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:30,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-13 13:57:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:30,977 INFO L225 Difference]: With dead ends: 23607 [2020-10-13 13:57:30,977 INFO L226 Difference]: Without dead ends: 17053 [2020-10-13 13:57:30,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:31,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17053 states. [2020-10-13 13:57:31,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17053 to 17051. [2020-10-13 13:57:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17051 states. [2020-10-13 13:57:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17051 states to 17051 states and 27974 transitions. [2020-10-13 13:57:31,829 INFO L78 Accepts]: Start accepts. Automaton has 17051 states and 27974 transitions. Word has length 117 [2020-10-13 13:57:31,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:31,829 INFO L479 AbstractCegarLoop]: Abstraction has 17051 states and 27974 transitions. [2020-10-13 13:57:31,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:57:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 17051 states and 27974 transitions. [2020-10-13 13:57:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 13:57:31,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:31,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:31,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:57:31,832 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:31,832 INFO L82 PathProgramCache]: Analyzing trace with hash -819835801, now seen corresponding path program 1 times [2020-10-13 13:57:31,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:31,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876995970] [2020-10-13 13:57:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:31,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:33,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:36,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:57:36,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:57:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:57:36,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-13 13:57:36,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:57:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:37,232 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:57:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:37,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:37,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:37,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:37,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:57:37,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:37,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:37,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:37,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:37,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876995970] [2020-10-13 13:57:37,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:37,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:37,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755112681] [2020-10-13 13:57:37,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:37,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:37,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:37,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:37,281 INFO L87 Difference]: Start difference. First operand 17051 states and 27974 transitions. Second operand 4 states. [2020-10-13 13:57:37,667 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:57:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:40,372 INFO L93 Difference]: Finished difference Result 32875 states and 54126 transitions. [2020-10-13 13:57:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:57:40,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-13 13:57:40,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:40,408 INFO L225 Difference]: With dead ends: 32875 [2020-10-13 13:57:40,408 INFO L226 Difference]: Without dead ends: 23737 [2020-10-13 13:57:40,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23737 states. [2020-10-13 13:57:41,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23737 to 23735. [2020-10-13 13:57:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23735 states. [2020-10-13 13:57:41,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23735 states to 23735 states and 38894 transitions. [2020-10-13 13:57:41,404 INFO L78 Accepts]: Start accepts. Automaton has 23735 states and 38894 transitions. Word has length 117 [2020-10-13 13:57:41,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:41,404 INFO L479 AbstractCegarLoop]: Abstraction has 23735 states and 38894 transitions. [2020-10-13 13:57:41,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:57:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 23735 states and 38894 transitions. [2020-10-13 13:57:41,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 13:57:41,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:41,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:41,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:57:41,407 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:41,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:41,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1992272936, now seen corresponding path program 1 times [2020-10-13 13:57:41,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:41,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408096220] [2020-10-13 13:57:41,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:41,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:41,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:46,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:46,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:57:46,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:57:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:57:46,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-13 13:57:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:57:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:46,818 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:57:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:46,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:46,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:46,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:46,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:57:46,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:46,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:46,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:46,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408096220] [2020-10-13 13:57:46,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:46,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:46,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746816142] [2020-10-13 13:57:46,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:46,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:46,854 INFO L87 Difference]: Start difference. First operand 23735 states and 38894 transitions. Second operand 5 states. [2020-10-13 13:57:47,211 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:57:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:50,465 INFO L93 Difference]: Finished difference Result 76556 states and 125797 transitions. [2020-10-13 13:57:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:57:50,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-13 13:57:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:50,546 INFO L225 Difference]: With dead ends: 76556 [2020-10-13 13:57:50,546 INFO L226 Difference]: Without dead ends: 53127 [2020-10-13 13:57:50,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:57:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53127 states. [2020-10-13 13:57:52,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53127 to 38345. [2020-10-13 13:57:52,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38345 states. [2020-10-13 13:57:52,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38345 states to 38345 states and 62722 transitions. [2020-10-13 13:57:52,207 INFO L78 Accepts]: Start accepts. Automaton has 38345 states and 62722 transitions. Word has length 117 [2020-10-13 13:57:52,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:52,207 INFO L479 AbstractCegarLoop]: Abstraction has 38345 states and 62722 transitions. [2020-10-13 13:57:52,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 38345 states and 62722 transitions. [2020-10-13 13:57:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 13:57:52,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:52,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:57:52,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:57:52,209 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:52,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:52,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1924981993, now seen corresponding path program 1 times [2020-10-13 13:57:52,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:52,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592532726] [2020-10-13 13:57:52,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:52,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:52,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:57,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 13:57:57,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:57:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:57:57,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:57:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-13 13:57:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:57:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:57,580 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:57:57,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:57,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:57,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:57:57,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:57:57,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592532726] [2020-10-13 13:57:57,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:57,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:57:57,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737348883] [2020-10-13 13:57:57,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:57:57,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:57,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:57:57,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:57:57,613 INFO L87 Difference]: Start difference. First operand 38345 states and 62722 transitions. Second operand 4 states. [2020-10-13 13:57:57,967 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:58:02,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:02,001 INFO L93 Difference]: Finished difference Result 83408 states and 136889 transitions. [2020-10-13 13:58:02,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:02,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-13 13:58:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:02,096 INFO L225 Difference]: With dead ends: 83408 [2020-10-13 13:58:02,097 INFO L226 Difference]: Without dead ends: 56803 [2020-10-13 13:58:02,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:02,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56803 states. [2020-10-13 13:58:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56803 to 56801. [2020-10-13 13:58:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56801 states. [2020-10-13 13:58:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56801 states to 56801 states and 92710 transitions. [2020-10-13 13:58:06,152 INFO L78 Accepts]: Start accepts. Automaton has 56801 states and 92710 transitions. Word has length 117 [2020-10-13 13:58:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:06,153 INFO L479 AbstractCegarLoop]: Abstraction has 56801 states and 92710 transitions. [2020-10-13 13:58:06,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:58:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 56801 states and 92710 transitions. [2020-10-13 13:58:06,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 13:58:06,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:06,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:06,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:58:06,154 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:06,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:06,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1578424627, now seen corresponding path program 1 times [2020-10-13 13:58:06,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:06,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970332858] [2020-10-13 13:58:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:08,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:08,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:11,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:11,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:58:11,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:58:11,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:58:11,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 13:58:11,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 13:58:11,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:11,559 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:58:11,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:11,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:11,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:11,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:58:11,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:11,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:11,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:11,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970332858] [2020-10-13 13:58:11,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:11,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:11,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962654557] [2020-10-13 13:58:11,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:11,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:11,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:11,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:11,595 INFO L87 Difference]: Start difference. First operand 56801 states and 92710 transitions. Second operand 5 states. [2020-10-13 13:58:11,978 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2020-10-13 13:58:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:18,596 INFO L93 Difference]: Finished difference Result 182054 states and 297975 transitions. [2020-10-13 13:58:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:58:18,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-13 13:58:18,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:18,783 INFO L225 Difference]: With dead ends: 182054 [2020-10-13 13:58:18,783 INFO L226 Difference]: Without dead ends: 125489 [2020-10-13 13:58:18,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:58:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125489 states. [2020-10-13 13:58:24,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125489 to 90920. [2020-10-13 13:58:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90920 states. [2020-10-13 13:58:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90920 states to 90920 states and 148063 transitions. [2020-10-13 13:58:25,199 INFO L78 Accepts]: Start accepts. Automaton has 90920 states and 148063 transitions. Word has length 118 [2020-10-13 13:58:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:25,200 INFO L479 AbstractCegarLoop]: Abstraction has 90920 states and 148063 transitions. [2020-10-13 13:58:25,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 90920 states and 148063 transitions. [2020-10-13 13:58:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 13:58:25,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:25,202 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:25,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:58:25,202 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:25,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:25,202 INFO L82 PathProgramCache]: Analyzing trace with hash -747019037, now seen corresponding path program 1 times [2020-10-13 13:58:25,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:25,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189032480] [2020-10-13 13:58:25,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:25,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:25,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:25,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:25,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:27,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:30,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:30,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:58:30,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:58:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5620 [2020-10-13 13:58:30,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:58:30,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-13 13:58:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 13:58:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:31,337 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:58:31,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:31,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:31,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:31,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:58:31,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:31,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:31,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189032480] [2020-10-13 13:58:31,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:31,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:58:31,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789183489] [2020-10-13 13:58:31,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:58:31,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:31,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:58:31,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:58:31,398 INFO L87 Difference]: Start difference. First operand 90920 states and 148063 transitions. Second operand 7 states. [2020-10-13 13:58:31,838 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-13 13:58:42,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:42,449 INFO L93 Difference]: Finished difference Result 274736 states and 448996 transitions. [2020-10-13 13:58:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:58:42,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 120 [2020-10-13 13:58:42,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:42,725 INFO L225 Difference]: With dead ends: 274736 [2020-10-13 13:58:42,725 INFO L226 Difference]: Without dead ends: 184052 [2020-10-13 13:58:42,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:58:42,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184052 states. [2020-10-13 13:58:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184052 to 90920. [2020-10-13 13:58:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90920 states. [2020-10-13 13:58:51,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90920 states to 90920 states and 147438 transitions. [2020-10-13 13:58:51,119 INFO L78 Accepts]: Start accepts. Automaton has 90920 states and 147438 transitions. Word has length 120 [2020-10-13 13:58:51,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:51,119 INFO L479 AbstractCegarLoop]: Abstraction has 90920 states and 147438 transitions. [2020-10-13 13:58:51,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:58:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 90920 states and 147438 transitions. [2020-10-13 13:58:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 13:58:51,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:51,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:58:51,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:58:51,121 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:51,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:51,121 INFO L82 PathProgramCache]: Analyzing trace with hash 27060889, now seen corresponding path program 1 times [2020-10-13 13:58:51,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:51,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546597545] [2020-10-13 13:58:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:56,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-13 13:58:56,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:58:56,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:58:56,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:58:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 13:58:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:58:56,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:56,587 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 247 [2020-10-13 13:58:56,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:56,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:56,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:56,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:58:56,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:58:56,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546597545] [2020-10-13 13:58:56,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:56,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:58:56,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348956175] [2020-10-13 13:58:56,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:58:56,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:56,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:58:56,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:58:56,628 INFO L87 Difference]: Start difference. First operand 90920 states and 147438 transitions. Second operand 7 states. [2020-10-13 13:58:57,072 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-13 13:59:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:24,634 INFO L93 Difference]: Finished difference Result 451768 states and 737000 transitions. [2020-10-13 13:59:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:59:24,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-10-13 13:59:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:25,195 INFO L225 Difference]: With dead ends: 451768 [2020-10-13 13:59:25,195 INFO L226 Difference]: Without dead ends: 361084 [2020-10-13 13:59:25,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:59:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361084 states. [2020-10-13 13:59:41,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361084 to 175078. [2020-10-13 13:59:41,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175078 states. [2020-10-13 13:59:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175078 states to 175078 states and 282387 transitions. [2020-10-13 13:59:41,986 INFO L78 Accepts]: Start accepts. Automaton has 175078 states and 282387 transitions. Word has length 123 [2020-10-13 13:59:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:41,987 INFO L479 AbstractCegarLoop]: Abstraction has 175078 states and 282387 transitions. [2020-10-13 13:59:41,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:59:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 175078 states and 282387 transitions. [2020-10-13 13:59:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 13:59:41,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:41,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:59:41,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:59:41,988 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:41,988 INFO L82 PathProgramCache]: Analyzing trace with hash 836978432, now seen corresponding path program 1 times [2020-10-13 13:59:41,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:41,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029949544] [2020-10-13 13:59:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:44,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:44,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:44,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:47,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:47,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 13:59:47,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:59:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:59:47,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 13:59:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:59:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0