/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/ldv-regression/test22-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:30:09,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:30:09,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:30:09,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:30:09,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:30:09,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:30:09,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:30:09,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:30:09,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:30:09,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:30:09,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:30:09,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:30:09,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:30:09,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:30:09,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:30:09,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:30:09,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:30:09,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:30:09,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:30:09,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:30:09,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:30:09,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:30:09,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:30:09,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:30:09,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:30:09,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:30:09,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:30:09,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:30:09,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:30:09,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:30:09,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:30:09,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:30:09,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:30:09,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:30:09,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:30:09,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:30:09,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:30:09,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:30:09,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:30:09,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:30:09,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:30:09,547 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 10:30:09,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:30:09,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:30:09,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:30:09,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:30:09,585 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:30:09,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:30:09,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:30:09,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:30:09,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:30:09,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:30:09,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:30:09,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:30:09,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:30:09,587 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:30:09,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:30:09,587 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:30:09,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:30:09,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:30:09,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:30:09,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:30:09,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:30:09,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:30:09,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:30:09,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:30:09,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:30:09,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:30:09,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:30:09,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:30:09,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:30:09,590 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 10:30:09,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:30:09,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:30:09,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:30:09,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:30:09,934 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:30:09,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-1.c [2020-10-13 10:30:10,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ea959bde/8d0c9bb720434be3bc4d9d8a0a145915/FLAG92eb701a2 [2020-10-13 10:30:10,494 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:30:10,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test22-1.c [2020-10-13 10:30:10,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ea959bde/8d0c9bb720434be3bc4d9d8a0a145915/FLAG92eb701a2 [2020-10-13 10:30:10,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ea959bde/8d0c9bb720434be3bc4d9d8a0a145915 [2020-10-13 10:30:10,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:30:10,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:30:10,886 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:30:10,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:30:10,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:30:10,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:30:10" (1/1) ... [2020-10-13 10:30:10,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b936640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:10, skipping insertion in model container [2020-10-13 10:30:10,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:30:10" (1/1) ... [2020-10-13 10:30:10,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:30:10,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:30:11,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:30:11,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:30:11,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:30:11,170 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:30:11,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11 WrapperNode [2020-10-13 10:30:11,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:30:11,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:30:11,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:30:11,172 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:30:11,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (1/1) ... [2020-10-13 10:30:11,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (1/1) ... [2020-10-13 10:30:11,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (1/1) ... [2020-10-13 10:30:11,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (1/1) ... [2020-10-13 10:30:11,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (1/1) ... [2020-10-13 10:30:11,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (1/1) ... [2020-10-13 10:30:11,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (1/1) ... [2020-10-13 10:30:11,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:30:11,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:30:11,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:30:11,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:30:11,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (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 10:30:11,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:30:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:30:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 10:30:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-13 10:30:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 10:30:11,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:30:11,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:30:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:30:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 10:30:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 10:30:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:30:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-13 10:30:11,374 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 10:30:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:30:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:30:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:30:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:30:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-13 10:30:11,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:30:11,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:30:11,710 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:30:11,711 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 10:30:11,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:11 BoogieIcfgContainer [2020-10-13 10:30:11,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:30:11,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:30:11,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:30:11,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:30:11,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:30:10" (1/3) ... [2020-10-13 10:30:11,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5fbe93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:30:11, skipping insertion in model container [2020-10-13 10:30:11,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:30:11" (2/3) ... [2020-10-13 10:30:11,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5fbe93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:30:11, skipping insertion in model container [2020-10-13 10:30:11,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:30:11" (3/3) ... [2020-10-13 10:30:11,727 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-1.c [2020-10-13 10:30:11,749 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:30:11,759 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:30:11,771 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:30:11,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:30:11,795 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:30:11,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:30:11,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:30:11,796 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:30:11,796 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:30:11,796 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:30:11,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:30:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-13 10:30:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:30:11,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:11,825 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 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 10:30:11,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:11,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:11,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1345538594, now seen corresponding path program 1 times [2020-10-13 10:30:11,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:11,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404518206] [2020-10-13 10:30:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:12,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:12,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:30:12,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:12,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-13 10:30:12,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 10:30:12,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:12,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:30:12,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:12,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:12,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:12,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:30:12,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:12,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:12,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:12,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:12,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:12,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:12,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:30:12,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:12,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:12,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:12,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:12,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:12,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:12,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:30:12,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:12,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:12,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:12,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:12,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:12,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:12,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:12,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:12,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:12,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:12,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:12,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:12,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:12,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:12,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:30:12,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:12,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 10:30:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:12,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:12,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:12,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:30:12,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:12,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:12,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:12,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404518206] [2020-10-13 10:30:12,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:30:12,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:30:12,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869319550] [2020-10-13 10:30:12,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:30:12,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:12,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:30:12,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:30:12,628 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-10-13 10:30:12,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:12,841 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-10-13 10:30:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:30:12,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-13 10:30:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:12,852 INFO L225 Difference]: With dead ends: 49 [2020-10-13 10:30:12,852 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 10:30:12,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:30:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 10:30:12,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-13 10:30:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 10:30:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 10:30:12,919 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2020-10-13 10:30:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:12,921 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 10:30:12,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:30:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 10:30:12,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:30:12,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:12,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 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 10:30:12,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:30:12,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:12,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:12,929 INFO L82 PathProgramCache]: Analyzing trace with hash -213153012, now seen corresponding path program 1 times [2020-10-13 10:30:12,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:12,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913039376] [2020-10-13 10:30:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:13,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:14,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:14,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:30:14,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:30:14,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-13 10:30:14,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:30:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:30:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-10-13 10:30:14,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:14,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:14,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:14,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:14,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:14,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:30:14,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:14,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:14,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:14,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:14,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:14,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:14,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:14,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:14,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:14,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:14,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:14,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:14,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:14,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:14,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:14,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:14,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:14,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:14,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:14,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:14,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:14,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:14,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:30:14,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:14,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:14,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:14,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:14,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:14,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:14,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:14,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:14,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:14,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:14,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:30:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:14,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:14,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:14,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:14,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:30:14,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:14,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:14,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 10:30:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:14,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913039376] [2020-10-13 10:30:14,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:30:14,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 10:30:14,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351675826] [2020-10-13 10:30:14,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:30:14,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:14,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:30:14,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:30:14,299 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 8 states. [2020-10-13 10:30:14,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:14,712 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-10-13 10:30:14,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:30:14,714 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-13 10:30:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:14,718 INFO L225 Difference]: With dead ends: 42 [2020-10-13 10:30:14,719 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 10:30:14,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:30:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 10:30:14,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 10:30:14,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 10:30:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 10:30:14,741 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2020-10-13 10:30:14,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:14,743 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 10:30:14,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:30:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 10:30:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:30:14,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:14,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:30:14,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:30:14,746 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:14,747 INFO L82 PathProgramCache]: Analyzing trace with hash -655504409, now seen corresponding path program 1 times [2020-10-13 10:30:14,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:14,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447909800] [2020-10-13 10:30:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:14,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:15,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:15,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:30:15,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:30:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 656 [2020-10-13 10:30:15,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:30:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:30:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:15,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:15,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:15,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:15,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:30:15,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:15,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:15,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:15,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:15,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:15,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:15,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:15,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:15,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:15,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:15,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:15,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:15,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:15,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:15,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:15,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:15,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:15,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:15,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:15,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:15,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:15,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:15,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:15,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:15,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:15,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:15,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:15,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:30:15,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:15,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:15,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:30:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:15,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:15,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:15,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:15,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:15,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447909800] [2020-10-13 10:30:15,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:15,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:30:15,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343682676] [2020-10-13 10:30:15,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:30:15,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:15,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:30:15,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:30:15,636 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2020-10-13 10:30:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:16,190 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-13 10:30:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:30:16,191 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-13 10:30:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:16,192 INFO L225 Difference]: With dead ends: 44 [2020-10-13 10:30:16,193 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 10:30:16,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:30:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 10:30:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 10:30:16,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 10:30:16,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 10:30:16,203 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 40 [2020-10-13 10:30:16,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:16,203 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 10:30:16,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:30:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 10:30:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 10:30:16,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:16,205 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:30:16,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:30:16,206 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:16,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:16,207 INFO L82 PathProgramCache]: Analyzing trace with hash -553434622, now seen corresponding path program 2 times [2020-10-13 10:30:16,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:16,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163014025] [2020-10-13 10:30:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:16,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:17,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:17,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:30:17,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:17,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1512 [2020-10-13 10:30:17,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:30:17,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:17,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:30:17,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:17,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:17,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:17,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:30:17,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:17,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:17,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:17,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:17,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:17,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:17,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:17,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:17,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:17,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:17,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:17,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:17,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:17,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:17,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:17,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:17,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:17,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:30:17,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:17,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:17,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:17,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:17,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:17,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:17,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:17,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:17,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:17,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:17,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:17,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:17,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 10:30:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:17,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:17,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:17,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:17,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:17,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:17,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:17,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:17,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:17,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:17,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163014025] [2020-10-13 10:30:17,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:17,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:30:17,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209041818] [2020-10-13 10:30:17,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:30:17,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:17,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:30:17,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:30:17,987 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 10 states. [2020-10-13 10:30:18,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:18,749 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-13 10:30:18,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:30:18,750 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-10-13 10:30:18,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:18,751 INFO L225 Difference]: With dead ends: 46 [2020-10-13 10:30:18,751 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 10:30:18,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:30:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 10:30:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 10:30:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 10:30:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 10:30:18,766 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 42 [2020-10-13 10:30:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:18,768 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 10:30:18,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:30:18,769 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 10:30:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:30:18,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:18,773 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 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 10:30:18,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:30:18,773 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:18,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1248617123, now seen corresponding path program 3 times [2020-10-13 10:30:18,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:18,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804400017] [2020-10-13 10:30:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:18,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:18,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:19,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:19,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:20,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:20,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:30:20,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:20,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1846 [2020-10-13 10:30:20,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:30:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:20,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:30:20,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:20,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:20,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:20,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:20,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:20,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:20,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:20,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:20,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:20,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:20,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:20,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:20,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:20,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:20,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:20,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:30:20,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:20,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:20,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:20,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:20,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:20,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:20,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:20,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:20,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:20,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:20,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:20,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:20,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:20,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:20,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:20,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:20,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:20,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:20,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:20,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:20,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:20,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:20,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:20,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:20,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:20,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 10:30:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:20,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:20,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:20,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:20,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:20,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:20,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:20,809 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:20,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804400017] [2020-10-13 10:30:20,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:20,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:30:20,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798026086] [2020-10-13 10:30:20,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:30:20,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:20,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:30:20,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:30:20,814 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 11 states. [2020-10-13 10:30:21,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:21,516 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-13 10:30:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:30:21,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-13 10:30:21,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:21,518 INFO L225 Difference]: With dead ends: 48 [2020-10-13 10:30:21,518 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 10:30:21,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:30:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 10:30:21,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 10:30:21,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 10:30:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 10:30:21,533 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 44 [2020-10-13 10:30:21,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:21,535 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 10:30:21,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:30:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 10:30:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 10:30:21,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:21,540 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 1, 1, 1, 1, 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 10:30:21,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:30:21,541 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:21,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:21,541 INFO L82 PathProgramCache]: Analyzing trace with hash 695897592, now seen corresponding path program 4 times [2020-10-13 10:30:21,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:21,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445338785] [2020-10-13 10:30:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:21,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:21,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:22,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:23,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:23,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:30:23,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:23,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2400 [2020-10-13 10:30:23,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:30:23,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:30:23,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:24,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:24,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:24,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:24,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:30:24,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:24,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:24,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:24,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:24,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:24,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:24,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:24,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:30:24,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:24,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:24,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:24,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:24,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:24,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:24,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:24,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:24,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:24,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:24,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:24,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:24,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:24,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:24,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:24,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:24,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:24,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:24,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:24,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:24,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:24,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:24,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:24,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:24,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:30:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:24,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:24,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:24,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:24,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:30:24,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:24,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445338785] [2020-10-13 10:30:24,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:24,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:30:24,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311154329] [2020-10-13 10:30:24,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:30:24,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:24,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:30:24,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:30:24,243 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 12 states. [2020-10-13 10:30:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:24,991 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-13 10:30:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:30:24,991 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-13 10:30:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:24,993 INFO L225 Difference]: With dead ends: 50 [2020-10-13 10:30:24,993 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 10:30:24,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:30:24,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 10:30:25,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 10:30:25,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 10:30:25,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 10:30:25,005 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 46 [2020-10-13 10:30:25,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:25,006 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 10:30:25,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:30:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 10:30:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:30:25,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:25,013 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 1, 1, 1, 1, 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 10:30:25,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:30:25,013 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:25,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1063764947, now seen corresponding path program 5 times [2020-10-13 10:30:25,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:25,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682690428] [2020-10-13 10:30:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:25,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:27,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:27,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 10:30:27,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:27,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2953 [2020-10-13 10:30:27,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:30:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:27,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:30:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:28,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:28,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:28,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:30:28,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:28,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:28,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:28,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:28,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:28,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:28,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:28,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:28,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:28,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:28,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:28,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:28,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:28,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:28,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:28,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:28,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:28,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:28,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:28,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:28,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:28,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:28,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:28,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 10:30:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:28,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:28,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:28,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:28,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:28,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:30:28,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:28,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682690428] [2020-10-13 10:30:28,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:28,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:30:28,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871501462] [2020-10-13 10:30:28,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:30:28,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:28,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:30:28,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:30:28,284 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 13 states. [2020-10-13 10:30:29,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:29,547 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-10-13 10:30:29,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:30:29,548 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-13 10:30:29,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:29,553 INFO L225 Difference]: With dead ends: 52 [2020-10-13 10:30:29,553 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:30:29,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=236, Invalid=520, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:30:29,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:30:29,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 10:30:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 10:30:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 10:30:29,573 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 48 [2020-10-13 10:30:29,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:29,574 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 10:30:29,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:30:29,577 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 10:30:29,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:30:29,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:29,579 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 3, 1, 1, 1, 1, 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 10:30:29,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:30:29,580 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:29,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:29,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1897992466, now seen corresponding path program 6 times [2020-10-13 10:30:29,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:29,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683471099] [2020-10-13 10:30:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:29,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:33,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:33,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:30:33,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3442 [2020-10-13 10:30:33,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:30:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:33,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:30:33,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:33,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:33,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:33,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:33,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:33,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:33,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:30:33,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:33,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:33,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:33,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:33,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:33,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:33,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:33,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:33,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:33,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:33,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:33,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:33,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:33,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:33,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:33,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:33,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:33,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:33,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:33,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:33,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:33,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:33,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:33,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:33,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:33,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:33,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:33,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:33,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:33,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:33,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:33,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:33,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:33,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:33,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:30:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:33,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:33,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:33,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:33,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:33,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:33,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:33,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:33,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:33,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683471099] [2020-10-13 10:30:33,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:33,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:30:33,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667256813] [2020-10-13 10:30:33,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:30:33,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:33,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:30:33,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:30:33,265 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 14 states. [2020-10-13 10:30:34,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:34,215 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-10-13 10:30:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:30:34,216 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2020-10-13 10:30:34,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:34,217 INFO L225 Difference]: With dead ends: 54 [2020-10-13 10:30:34,217 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 10:30:34,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=292, Invalid=638, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:30:34,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 10:30:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 10:30:34,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 10:30:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 10:30:34,230 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 50 [2020-10-13 10:30:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:34,231 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 10:30:34,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:30:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 10:30:34,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:30:34,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:34,233 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 3, 3, 3, 1, 1, 1, 1, 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 10:30:34,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:30:34,233 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:34,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:34,234 INFO L82 PathProgramCache]: Analyzing trace with hash -583549111, now seen corresponding path program 7 times [2020-10-13 10:30:34,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:34,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109806156] [2020-10-13 10:30:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:34,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:34,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:34,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:37,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:37,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:30:37,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:37,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2834 [2020-10-13 10:30:37,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:30:37,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:37,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:30:37,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:37,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:37,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:37,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:37,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:37,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:37,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:37,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:37,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:37,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:37,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:37,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:37,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:37,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:37,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:37,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:37,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:37,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:37,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:37,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:37,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:37,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:37,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:37,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:37,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:37,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:37,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:37,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:37,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:37,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:37,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:37,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:37,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:37,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:37,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:37,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:37,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 10:30:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:37,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:37,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:37,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:37,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:37,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:37,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:37,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:37,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109806156] [2020-10-13 10:30:37,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:37,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:30:37,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302535843] [2020-10-13 10:30:37,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:30:37,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:37,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:30:37,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:30:37,322 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 15 states. [2020-10-13 10:30:38,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:38,385 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-10-13 10:30:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:30:38,385 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-13 10:30:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:38,387 INFO L225 Difference]: With dead ends: 56 [2020-10-13 10:30:38,387 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 10:30:38,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:30:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 10:30:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 10:30:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 10:30:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 10:30:38,400 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 52 [2020-10-13 10:30:38,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:38,400 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 10:30:38,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:30:38,400 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 10:30:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:30:38,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:38,402 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 3, 3, 3, 1, 1, 1, 1, 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 10:30:38,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:30:38,403 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash -123869980, now seen corresponding path program 8 times [2020-10-13 10:30:38,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:38,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051219205] [2020-10-13 10:30:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:38,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:38,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:41,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:41,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 10:30:41,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:41,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2642 [2020-10-13 10:30:41,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:41,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:30:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:41,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:30:41,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:41,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:41,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:41,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:41,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:41,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:41,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:41,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:41,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:41,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:41,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:41,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:41,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:41,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:41,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:41,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:41,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:41,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:41,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:41,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:41,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:41,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:41,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:41,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:41,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:41,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:41,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:41,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:41,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:41,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:41,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:41,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:41,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:41,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:41,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:30:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:41,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:41,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:41,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:41,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:41,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:41,285 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:41,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051219205] [2020-10-13 10:30:41,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:41,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:30:41,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515496929] [2020-10-13 10:30:41,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:30:41,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:41,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:30:41,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:30:41,288 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 16 states. [2020-10-13 10:30:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:42,470 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-10-13 10:30:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:30:42,471 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 54 [2020-10-13 10:30:42,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:42,473 INFO L225 Difference]: With dead ends: 58 [2020-10-13 10:30:42,473 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 10:30:42,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=422, Invalid=910, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 10:30:42,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 10:30:42,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 10:30:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 10:30:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 10:30:42,481 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 54 [2020-10-13 10:30:42,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:42,482 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 10:30:42,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:30:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 10:30:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:30:42,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:42,483 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 3, 3, 3, 1, 1, 1, 1, 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 10:30:42,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:30:42,483 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:42,484 INFO L82 PathProgramCache]: Analyzing trace with hash -753856577, now seen corresponding path program 9 times [2020-10-13 10:30:42,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:42,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291172115] [2020-10-13 10:30:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:42,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:42,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:42,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:42,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:44,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:44,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:30:44,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:44,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2239 [2020-10-13 10:30:44,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:44,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:30:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:44,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:30:44,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:44,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:44,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:44,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:44,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:44,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:44,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:44,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:44,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:44,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:44,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:44,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:44,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:44,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:44,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:44,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:44,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:44,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:44,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:44,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:44,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:44,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:44,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:44,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:44,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:44,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:44,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:44,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:44,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:44,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:44,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:44,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:44,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:30:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:44,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:44,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:44,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:44,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:44,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:44,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:44,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:44,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291172115] [2020-10-13 10:30:44,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:44,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:30:44,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502601834] [2020-10-13 10:30:44,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:30:44,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:44,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:30:44,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:30:44,970 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 17 states. [2020-10-13 10:30:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:46,246 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-10-13 10:30:46,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:30:46,248 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-13 10:30:46,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:46,249 INFO L225 Difference]: With dead ends: 60 [2020-10-13 10:30:46,249 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 10:30:46,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=496, Invalid=1064, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:30:46,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 10:30:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 10:30:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 10:30:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 10:30:46,258 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 56 [2020-10-13 10:30:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:46,259 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 10:30:46,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:30:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 10:30:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 10:30:46,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:46,260 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 3, 3, 3, 1, 1, 1, 1, 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 10:30:46,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:30:46,260 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:46,261 INFO L82 PathProgramCache]: Analyzing trace with hash -580587558, now seen corresponding path program 10 times [2020-10-13 10:30:46,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:46,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841937222] [2020-10-13 10:30:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:46,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:46,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:48,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:48,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:30:48,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:30:48,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-13 10:30:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:30:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 10:30:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:30:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:48,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:48,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:48,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:48,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:48,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:48,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:48,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:48,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:48,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:48,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:48,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:48,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:48,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:48,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:48,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:48,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:48,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:48,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:48,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:48,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:48,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:48,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:48,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:48,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:48,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:48,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:48,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:48,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:48,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:48,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:48,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:48,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:48,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:48,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:48,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:48,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:48,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:48,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:48,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:48,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:48,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 10:30:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:48,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:48,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:48,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:48,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:48,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:30:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:48,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:30:48,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:48,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841937222] [2020-10-13 10:30:48,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:48,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:30:48,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369344007] [2020-10-13 10:30:48,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:30:48,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:30:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:30:48,534 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-13 10:30:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:49,607 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-13 10:30:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:30:49,608 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-13 10:30:49,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:49,609 INFO L225 Difference]: With dead ends: 58 [2020-10-13 10:30:49,609 INFO L226 Difference]: Without dead ends: 53 [2020-10-13 10:30:49,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:30:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-13 10:30:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-13 10:30:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 10:30:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 10:30:49,618 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 58 [2020-10-13 10:30:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:49,618 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 10:30:49,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:30:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 10:30:49,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:30:49,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:49,619 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 3, 3, 3, 1, 1, 1, 1, 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 10:30:49,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:30:49,620 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:49,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:49,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1572784843, now seen corresponding path program 11 times [2020-10-13 10:30:49,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:49,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027484682] [2020-10-13 10:30:49,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:50,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:51,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:51,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 10:30:51,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:51,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2080 [2020-10-13 10:30:51,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:30:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:30:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:30:51,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:51,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:51,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:51,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:51,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:51,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:51,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:51,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:51,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:51,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 10:30:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:51,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:51,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:51,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:51,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:51,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:51,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:51,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:51,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:30:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:51,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:51,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:51,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:30:51,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:51,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:51,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:51,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:51,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:51,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:51,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:51,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:30:51,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:51,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:51,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:51,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 10:30:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:51,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:51,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:30:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 10:30:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:51,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:51,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:51,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:51,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:51,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:51,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:30:51,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:51,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:51,984 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 103 proven. 29 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:30:51,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027484682] [2020-10-13 10:30:51,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:51,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:30:51,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681562640] [2020-10-13 10:30:51,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:30:51,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:51,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:30:51,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:30:51,986 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-13 10:30:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:52,721 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-10-13 10:30:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:30:52,721 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-13 10:30:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:52,722 INFO L225 Difference]: With dead ends: 54 [2020-10-13 10:30:52,722 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 10:30:52,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=299, Invalid=757, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:30:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 10:30:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 10:30:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 10:30:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 10:30:52,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2020-10-13 10:30:52,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:52,725 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 10:30:52,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:30:52,725 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 10:30:52,725 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 10:30:52,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:30:52,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 10:30:53,294 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 77 [2020-10-13 10:30:53,322 INFO L268 CegarLoopResult]: For program point initEXIT(lines 11 18) no Hoare annotation was computed. [2020-10-13 10:30:53,322 INFO L264 CegarLoopResult]: At program point initENTRY(lines 11 18) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-13 10:30:53,322 INFO L268 CegarLoopResult]: For program point initFINAL(lines 11 18) no Hoare annotation was computed. [2020-10-13 10:30:53,322 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-13 10:30:53,323 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |old(#length)| |#length|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |old(~#d2~0.base)| |~#d2~0.base|)) [2020-10-13 10:30:53,323 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:30:53,323 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 20 23) no Hoare annotation was computed. [2020-10-13 10:30:53,323 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 20 23) the Hoare annotation is: true [2020-10-13 10:30:53,323 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-10-13 10:30:53,323 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 20 23) no Hoare annotation was computed. [2020-10-13 10:30:53,323 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 10:30:53,323 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 10:30:53,323 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 10:30:53,324 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 10:30:53,324 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-10-13 10:30:53,324 INFO L268 CegarLoopResult]: For program point L35-2(lines 35 44) no Hoare annotation was computed. [2020-10-13 10:30:53,324 INFO L271 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: true [2020-10-13 10:30:53,324 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-10-13 10:30:53,324 INFO L268 CegarLoopResult]: For program point L35-4(lines 35 44) no Hoare annotation was computed. [2020-10-13 10:30:53,324 INFO L271 CegarLoopResult]: At program point L33-3(line 33) the Hoare annotation is: true [2020-10-13 10:30:53,324 INFO L268 CegarLoopResult]: For program point L33-4(line 33) no Hoare annotation was computed. [2020-10-13 10:30:53,325 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 30 50) no Hoare annotation was computed. [2020-10-13 10:30:53,325 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 30 50) no Hoare annotation was computed. [2020-10-13 10:30:53,325 INFO L264 CegarLoopResult]: At program point L42(lines 31 50) the Hoare annotation is: false [2020-10-13 10:30:53,325 INFO L268 CegarLoopResult]: For program point L38-1(lines 38 40) no Hoare annotation was computed. [2020-10-13 10:30:53,326 INFO L264 CegarLoopResult]: At program point L38-3(lines 38 40) the Hoare annotation is: (let ((.cse3 (select (select |#memory_int| main_~pd2~0.base) main_~pd2~0.offset)) (.cse2 (= main_~pd2~0.offset main_~pd1~0.offset)) (.cse1 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)) (.cse4 (= main_~pd2~0.base main_~pd1~0.base))) (or (let ((.cse0 (+ main_~i~0 7))) (and (<= .cse0 .cse1) .cse2 (= .cse3 .cse0) (<= .cse1 .cse0) .cse4)) (let ((.cse5 (+ main_~i~0 9))) (and (= .cse3 .cse5) (<= .cse5 .cse1) (<= .cse1 .cse5) .cse2 .cse4)) (let ((.cse6 (+ main_~i~0 2))) (and (<= .cse6 .cse1) (= .cse3 .cse6) .cse2 (<= .cse1 .cse6) .cse4)) (let ((.cse7 (+ main_~i~0 4))) (and (= .cse3 .cse7) (<= .cse7 .cse1) (<= .cse1 .cse7) .cse2 .cse4)) (let ((.cse8 (+ main_~i~0 8))) (and (<= .cse8 .cse1) (= .cse3 .cse8) .cse2 (<= .cse1 .cse8) .cse4)) (let ((.cse9 (+ main_~i~0 3))) (and .cse2 (<= .cse1 .cse9) (<= .cse9 .cse1) (= .cse3 .cse9) .cse4)) (let ((.cse10 (+ main_~i~0 6))) (and (= .cse3 .cse10) .cse2 (<= .cse10 .cse1) (<= .cse1 .cse10) .cse4)) (let ((.cse11 (+ main_~i~0 10))) (and (= .cse11 .cse1) .cse2 (= .cse3 .cse11) .cse4)) (and (<= .cse1 main_~i~0) .cse2 (= .cse3 main_~i~0) .cse4) (let ((.cse12 (+ main_~i~0 1))) (and (<= .cse12 .cse1) (= .cse3 .cse12) (<= .cse1 .cse12) .cse2 .cse4)) (let ((.cse13 (+ main_~i~0 5))) (and (<= .cse1 .cse13) (= .cse3 .cse13) .cse2 (<= .cse13 .cse1) .cse4)))) [2020-10-13 10:30:53,326 INFO L264 CegarLoopResult]: At program point L38-4(lines 38 40) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= (select (select |#memory_int| main_~pd2~0.base) main_~pd2~0.offset) main_~i~0) (= main_~pd2~0.base main_~pd1~0.base)) [2020-10-13 10:30:53,326 INFO L271 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: true [2020-10-13 10:30:53,326 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2020-10-13 10:30:53,326 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 30 50) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-10-13 10:30:53,326 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-10-13 10:30:53,327 INFO L268 CegarLoopResult]: For program point L41-1(lines 41 43) no Hoare annotation was computed. [2020-10-13 10:30:53,327 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-13 10:30:53,327 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 25 28) the Hoare annotation is: true [2020-10-13 10:30:53,327 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 25 28) no Hoare annotation was computed. [2020-10-13 10:30:53,327 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 25 28) no Hoare annotation was computed. [2020-10-13 10:30:53,343 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,344 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,345 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,346 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,347 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,347 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,347 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,348 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,348 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,348 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,349 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,350 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,351 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,352 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,362 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,363 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,363 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,363 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,363 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,364 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,364 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,364 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,364 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,365 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,365 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,365 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,365 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,366 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,367 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,368 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,370 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:30:53 BoogieIcfgContainer [2020-10-13 10:30:53,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:30:53,378 INFO L168 Benchmark]: Toolchain (without parser) took 42493.68 ms. Allocated memory was 140.5 MB in the beginning and 601.4 MB in the end (delta: 460.8 MB). Free memory was 103.0 MB in the beginning and 113.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 450.9 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:53,379 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-13 10:30:53,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.63 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:53,383 INFO L168 Benchmark]: Boogie Preprocessor took 124.93 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:53,383 INFO L168 Benchmark]: RCFGBuilder took 419.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 161.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:53,388 INFO L168 Benchmark]: TraceAbstraction took 41655.27 ms. Allocated memory was 202.9 MB in the beginning and 601.4 MB in the end (delta: 398.5 MB). Free memory was 161.1 MB in the beginning and 113.0 MB in the end (delta: 48.1 MB). Peak memory consumption was 446.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:53,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.7 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 285.63 ms. Allocated memory is still 140.5 MB. Free memory was 103.0 MB in the beginning and 92.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.93 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.5 MB in the beginning and 180.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.1 MB in the beginning and 161.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41655.27 ms. Allocated memory was 202.9 MB in the beginning and 601.4 MB in the end (delta: 398.5 MB). Free memory was 161.1 MB in the beginning and 113.0 MB in the end (delta: 48.1 MB). Peak memory consumption was 446.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant [2020-10-13 10:30:53,414 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,414 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,414 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,415 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,423 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,424 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,425 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,426 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,427 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,428 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,430 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,434 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,435 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,435 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,435 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,435 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,435 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,436 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,436 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,436 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,436 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,437 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,437 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,437 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,437 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,437 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,438 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,438 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,439 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,439 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,439 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,439 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,440 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,441 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,441 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-13 10:30:53,441 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((((((((((i + 7 <= unknown-#memory_int-unknown[pa][pa] && pd2 == pd1) && unknown-#memory_int-unknown[pd2][pd2] == i + 7) && unknown-#memory_int-unknown[pa][pa] <= i + 7) && pd2 == pd1) || ((((unknown-#memory_int-unknown[pd2][pd2] == i + 9 && i + 9 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 9) && pd2 == pd1) && pd2 == pd1)) || ((((i + 2 <= unknown-#memory_int-unknown[pa][pa] && unknown-#memory_int-unknown[pd2][pd2] == i + 2) && pd2 == pd1) && unknown-#memory_int-unknown[pa][pa] <= i + 2) && pd2 == pd1)) || ((((unknown-#memory_int-unknown[pd2][pd2] == i + 4 && i + 4 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 4) && pd2 == pd1) && pd2 == pd1)) || ((((i + 8 <= unknown-#memory_int-unknown[pa][pa] && unknown-#memory_int-unknown[pd2][pd2] == i + 8) && pd2 == pd1) && unknown-#memory_int-unknown[pa][pa] <= i + 8) && pd2 == pd1)) || ((((pd2 == pd1 && unknown-#memory_int-unknown[pa][pa] <= i + 3) && i + 3 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pd2][pd2] == i + 3) && pd2 == pd1)) || ((((unknown-#memory_int-unknown[pd2][pd2] == i + 6 && pd2 == pd1) && i + 6 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 6) && pd2 == pd1)) || (((i + 10 == unknown-#memory_int-unknown[pa][pa] && pd2 == pd1) && unknown-#memory_int-unknown[pd2][pd2] == i + 10) && pd2 == pd1)) || (((unknown-#memory_int-unknown[pa][pa] <= i && pd2 == pd1) && unknown-#memory_int-unknown[pd2][pd2] == i) && pd2 == pd1)) || ((((i + 1 <= unknown-#memory_int-unknown[pa][pa] && unknown-#memory_int-unknown[pd2][pd2] == i + 1) && unknown-#memory_int-unknown[pa][pa] <= i + 1) && pd2 == pd1) && pd2 == pd1)) || ((((unknown-#memory_int-unknown[pa][pa] <= i + 5 && unknown-#memory_int-unknown[pd2][pd2] == i + 5) && pd2 == pd1) && i + 5 <= unknown-#memory_int-unknown[pa][pa]) && pd2 == pd1) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40.9s, OverallIterations: 13, TraceHistogramMax: 12, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 266 SDtfs, 715 SDslu, 568 SDs, 0 SdLazy, 3179 SolverSat, 489 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 476 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 308 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1413 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 27 PreInvPairs, 39 NumberOfFragments, 406 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 476 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 29.0s InterpolantComputationTime, 625 NumberOfCodeBlocks, 625 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 612 ConstructedInterpolants, 0 QuantifiedInterpolants, 116033 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 259/728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...