/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/mapsum4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:35:23,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:35:23,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:35:23,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:35:23,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:35:23,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:35:23,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:35:23,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:35:23,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:35:23,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:35:23,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:35:23,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:35:23,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:35:23,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:35:23,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:35:23,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:35:23,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:35:23,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:35:23,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:35:23,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:35:23,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:35:23,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:35:23,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:35:23,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:35:23,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:35:23,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:35:23,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:35:23,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:35:23,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:35:23,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:35:23,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:35:23,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:35:23,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:35:23,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:35:23,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:35:23,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:35:23,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:35:23,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:35:23,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:35:23,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:35:23,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:35:23,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 09:35:23,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:35:23,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:35:23,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:35:23,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:35:23,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:35:23,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:35:23,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:35:23,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:35:23,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:35:23,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:35:23,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:35:23,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:35:23,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:35:23,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:35:23,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:35:23,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:35:23,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:35:23,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:35:23,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:35:23,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:35:23,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:35:23,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:35:23,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:35:23,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:35:23,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:35:23,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:35:23,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:35:23,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:35:23,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:35:23,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 09:35:23,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:35:24,003 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:35:24,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:35:24,010 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:35:24,011 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:35:24,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum4.i [2020-10-12 09:35:24,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59c677001/b6f7197b9c93489d91a1cc9f5f033cda/FLAG9e6d8643a [2020-10-12 09:35:24,524 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:35:24,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum4.i [2020-10-12 09:35:24,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59c677001/b6f7197b9c93489d91a1cc9f5f033cda/FLAG9e6d8643a [2020-10-12 09:35:24,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59c677001/b6f7197b9c93489d91a1cc9f5f033cda [2020-10-12 09:35:24,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:35:24,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:35:24,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:24,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:35:24,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:35:24,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:35:24" (1/1) ... [2020-10-12 09:35:24,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78323104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:24, skipping insertion in model container [2020-10-12 09:35:24,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:35:24" (1/1) ... [2020-10-12 09:35:24,949 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:35:24,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:35:25,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:25,167 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:35:25,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:35:25,208 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:35:25,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25 WrapperNode [2020-10-12 09:35:25,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:35:25,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:35:25,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:35:25,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:35:25,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (1/1) ... [2020-10-12 09:35:25,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (1/1) ... [2020-10-12 09:35:25,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (1/1) ... [2020-10-12 09:35:25,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (1/1) ... [2020-10-12 09:35:25,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (1/1) ... [2020-10-12 09:35:25,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (1/1) ... [2020-10-12 09:35:25,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (1/1) ... [2020-10-12 09:35:25,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:35:25,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:35:25,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:35:25,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:35:25,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:35:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:35:25,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:35:25,392 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-12 09:35:25,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:35:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:35:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 09:35:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-12 09:35:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:35:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:35:25,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:35:25,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:35:25,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:35:25,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:35:25,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:35:25,673 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:35:25,673 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:35:25,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:25 BoogieIcfgContainer [2020-10-12 09:35:25,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:35:25,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:35:25,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:35:25,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:35:25,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:35:24" (1/3) ... [2020-10-12 09:35:25,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304c5a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:25, skipping insertion in model container [2020-10-12 09:35:25,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:35:25" (2/3) ... [2020-10-12 09:35:25,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@304c5a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:35:25, skipping insertion in model container [2020-10-12 09:35:25,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:35:25" (3/3) ... [2020-10-12 09:35:25,688 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum4.i [2020-10-12 09:35:25,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:35:25,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:35:25,747 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:35:25,794 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:35:25,795 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:35:25,795 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:35:25,795 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:35:25,795 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:35:25,795 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:35:25,796 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:35:25,796 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:35:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 09:35:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 09:35:25,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:25,829 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:25,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:25,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-12 09:35:25,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:25,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330086186] [2020-10-12 09:35:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:25,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:26,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:35:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:35:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1361 [2020-10-12 09:35:27,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:35:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:27,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 09:35:27,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:35:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:27,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:27,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:27,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:27,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 09:35:27,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:27,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:35:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:27,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 09:35:27,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:27,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:35:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:27,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:35:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:27,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:27,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:27,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:27,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 09:35:27,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:27,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 09:35:27,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:35:27,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330086186] [2020-10-12 09:35:27,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:35:27,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 09:35:27,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473815119] [2020-10-12 09:35:27,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:35:27,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:27,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:35:27,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:27,808 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-12 09:35:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:28,200 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-12 09:35:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:35:28,202 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 09:35:28,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:28,214 INFO L225 Difference]: With dead ends: 83 [2020-10-12 09:35:28,214 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:35:28,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:35:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:35:28,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-12 09:35:28,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:35:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-12 09:35:28,277 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-12 09:35:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:28,278 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-12 09:35:28,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:35:28,278 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-12 09:35:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 09:35:28,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:28,281 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 09:35:28,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:35:28,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:28,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:28,282 INFO L82 PathProgramCache]: Analyzing trace with hash -883673527, now seen corresponding path program 1 times [2020-10-12 09:35:28,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:28,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14478215] [2020-10-12 09:35:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:28,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:28,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:28,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:29,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:35:29,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-12 09:35:29,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 09:35:29,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:29,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:29,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:29,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:29,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:29,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:29,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:29,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:29,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:29,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:29,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:29,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 09:35:29,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:29,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 09:35:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:29,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:29,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 09:35:29,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 09:35:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:35:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 09:35:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:29,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:35:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:29,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:29,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 09:35:29,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:29,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 09:35:29,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 09:35:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:35:29,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:29,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 09:35:29,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14478215] [2020-10-12 09:35:29,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:29,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 09:35:29,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036309281] [2020-10-12 09:35:29,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 09:35:29,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:29,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 09:35:29,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 09:35:29,481 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-12 09:35:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:29,587 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-12 09:35:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 09:35:29,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 09:35:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:29,589 INFO L225 Difference]: With dead ends: 58 [2020-10-12 09:35:29,589 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 09:35:29,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:29,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 09:35:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 09:35:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 09:35:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 09:35:29,599 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-12 09:35:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:29,599 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 09:35:29,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 09:35:29,600 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 09:35:29,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 09:35:29,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:29,601 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:29,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:35:29,602 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash -919236729, now seen corresponding path program 2 times [2020-10-12 09:35:29,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:29,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828870296] [2020-10-12 09:35:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:29,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:30,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:34,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:35,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:35,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:35:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:35:35,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5655 [2020-10-12 09:35:35,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:35:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:35:35,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 09:35:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:36,086 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-12 09:35:36,384 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-10-12 09:35:36,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:36,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:36,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:36,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:36,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:36,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:36,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:36,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:36,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-12 09:35:36,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:35:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:36,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:36,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:37,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:35:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:37,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:37,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:37,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-12 09:35:37,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:37,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:37,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:35:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:38,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:38,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:38,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 09:35:38,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:35:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:35:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 09:35:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:35:38,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828870296] [2020-10-12 09:35:38,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:38,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:35:38,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859235789] [2020-10-12 09:35:38,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:35:38,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:38,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:35:38,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:35:38,457 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 14 states. [2020-10-12 09:35:40,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:40,023 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-12 09:35:40,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:35:40,024 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2020-10-12 09:35:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:40,026 INFO L225 Difference]: With dead ends: 56 [2020-10-12 09:35:40,026 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:35:40,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:35:40,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:35:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-12 09:35:40,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 09:35:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-12 09:35:40,051 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 44 [2020-10-12 09:35:40,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:40,051 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-12 09:35:40,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:35:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-10-12 09:35:40,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 09:35:40,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:40,057 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:40,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:35:40,057 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1711204411, now seen corresponding path program 3 times [2020-10-12 09:35:40,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:40,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215580896] [2020-10-12 09:35:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:40,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:40,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:45,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:35:45,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:45,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 09:35:45,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 09:35:45,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:45,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:45,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:45,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:45,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:45,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:45,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:45,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:45,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:45,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:45,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:45,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:45,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 09:35:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:45,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:45,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 09:35:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 09:35:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:45,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 09:35:45,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:35:45,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:35:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:45,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:35:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:45,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:35:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:45,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 09:35:45,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:45,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 09:35:45,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:35:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:45,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 09:35:45,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 09:35:45,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215580896] [2020-10-12 09:35:45,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:45,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:35:45,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635993151] [2020-10-12 09:35:45,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:35:45,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:45,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:35:45,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:35:45,242 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 7 states. [2020-10-12 09:35:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:45,368 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2020-10-12 09:35:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:35:45,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-12 09:35:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:45,370 INFO L225 Difference]: With dead ends: 65 [2020-10-12 09:35:45,370 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 09:35:45,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:35:45,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 09:35:45,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 09:35:45,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 09:35:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 09:35:45,376 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-12 09:35:45,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:45,377 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 09:35:45,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:35:45,377 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 09:35:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 09:35:45,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:45,379 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:45,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:35:45,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:45,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:45,380 INFO L82 PathProgramCache]: Analyzing trace with hash 79349251, now seen corresponding path program 4 times [2020-10-12 09:35:45,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:45,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964242724] [2020-10-12 09:35:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:45,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:50,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:35:50,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:35:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:35:50,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:35:50,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:50,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:50,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:50,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:35:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:50,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:50,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:50,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 09:35:50,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 09:35:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:50,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:50,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 09:35:50,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:50,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:50,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:50,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 09:35:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:50,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:50,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 09:35:50,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 09:35:50,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 09:35:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:35:50,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 09:35:50,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 09:35:50,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964242724] [2020-10-12 09:35:50,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:50,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 09:35:50,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24298488] [2020-10-12 09:35:50,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 09:35:50,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:50,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 09:35:50,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:35:50,558 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 09:35:50,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:35:50,709 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 09:35:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 09:35:50,710 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 09:35:50,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:35:50,711 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:35:50,711 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 09:35:50,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:35:50,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 09:35:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 09:35:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 09:35:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 09:35:50,717 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 09:35:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:35:50,717 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 09:35:50,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 09:35:50,718 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 09:35:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 09:35:50,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:35:50,719 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:35:50,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:35:50,719 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:35:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:35:50,720 INFO L82 PathProgramCache]: Analyzing trace with hash -754016383, now seen corresponding path program 5 times [2020-10-12 09:35:50,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:35:50,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313414234] [2020-10-12 09:35:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:35:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:55,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:55,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:35:55,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 09:35:55,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 09:35:55,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-12 09:35:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 09:35:55,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 09:35:55,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:56,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:35:56,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:56,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:56,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:35:56,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:35:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:35:56,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:35:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:56,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:35:56,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:56,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:35:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:56,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:56,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:56,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:56,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-12 09:35:56,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:35:56,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:56,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:56,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:57,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:35:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:57,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:57,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:57,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 09:35:57,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:57,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:35:57,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:57,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:57,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:35:58,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 09:35:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:35:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:35:58,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:35:58,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:35:58,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:35:58,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-10-12 09:35:58,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:35:58,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:35:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:35:58,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:35:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:35:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 09:35:59,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313414234] [2020-10-12 09:35:59,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:35:59,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:35:59,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018555530] [2020-10-12 09:35:59,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:35:59,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:35:59,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:35:59,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:35:59,257 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 20 states. [2020-10-12 09:36:01,214 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-12 09:36:01,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:01,523 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-10-12 09:36:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:36:01,527 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 62 [2020-10-12 09:36:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:01,529 INFO L225 Difference]: With dead ends: 62 [2020-10-12 09:36:01,529 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 09:36:01,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 13 SyntacticMatches, 16 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:36:01,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 09:36:01,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2020-10-12 09:36:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 09:36:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-12 09:36:01,540 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 62 [2020-10-12 09:36:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:01,541 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-12 09:36:01,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:36:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-12 09:36:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 09:36:01,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:01,543 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:01,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:36:01,543 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:01,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:01,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1848241857, now seen corresponding path program 6 times [2020-10-12 09:36:01,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:01,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444578098] [2020-10-12 09:36:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:01,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:01,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:03,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:36:06,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:36:06,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 09:36:06,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:36:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 09:36:06,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:36:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:06,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:06,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:36:06,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 09:36:06,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:36:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:36:06,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 09:36:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 09:36:06,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:06,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 09:36:06,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:36:06,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:06,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 09:36:06,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 09:36:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:06,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 09:36:06,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 09:36:06,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 09:36:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:06,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 09:36:06,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 75 proven. 183 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 09:36:06,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444578098] [2020-10-12 09:36:06,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:06,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 09:36:06,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755747242] [2020-10-12 09:36:06,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 09:36:06,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:06,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 09:36:06,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:36:06,754 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 10 states. [2020-10-12 09:36:06,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:06,957 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-10-12 09:36:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 09:36:06,958 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 64 [2020-10-12 09:36:06,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:06,959 INFO L225 Difference]: With dead ends: 77 [2020-10-12 09:36:06,959 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 09:36:06,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:36:06,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 09:36:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 09:36:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 09:36:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 09:36:06,965 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 64 [2020-10-12 09:36:06,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:06,966 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 09:36:06,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 09:36:06,966 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 09:36:06,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 09:36:06,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:06,968 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:06,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:36:06,968 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:06,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:06,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1267511037, now seen corresponding path program 7 times [2020-10-12 09:36:06,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:06,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825650961] [2020-10-12 09:36:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:06,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:06,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:07,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:11,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:11,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 09:36:11,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 09:36:11,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:36:11,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:36:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-12 09:36:11,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:36:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:12,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:12,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:36:12,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 09:36:12,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:36:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:36:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 09:36:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:36:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 09:36:12,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:36:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:36:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 09:36:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:12,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 09:36:12,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 09:36:12,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:12,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:36:12,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:12,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 09:36:12,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 09:36:12,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825650961] [2020-10-12 09:36:12,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:12,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:36:12,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202733805] [2020-10-12 09:36:12,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:36:12,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:36:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:36:12,220 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 09:36:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:12,426 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 09:36:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 09:36:12,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 09:36:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:12,428 INFO L225 Difference]: With dead ends: 72 [2020-10-12 09:36:12,428 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 09:36:12,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:36:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 09:36:12,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 09:36:12,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 09:36:12,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 09:36:12,435 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 09:36:12,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:12,435 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 09:36:12,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:36:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 09:36:12,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 09:36:12,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:12,436 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:12,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:36:12,437 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:12,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:12,437 INFO L82 PathProgramCache]: Analyzing trace with hash 303277307, now seen corresponding path program 8 times [2020-10-12 09:36:12,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:12,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576957500] [2020-10-12 09:36:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:12,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:12,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:17,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 09:36:17,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:17,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:36:17,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:36:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-12 09:36:17,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:36:17,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:17,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:17,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:17,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:36:17,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:17,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:17,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:17,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:36:17,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 09:36:17,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:36:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:17,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:36:17,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:17,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 09:36:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:17,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:36:17,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:17,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 09:36:17,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:36:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:36:17,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:17,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 09:36:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:17,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:17,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 09:36:17,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:17,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 09:36:17,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 09:36:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:36:17,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 09:36:17,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576957500] [2020-10-12 09:36:17,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:17,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 09:36:17,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527373423] [2020-10-12 09:36:17,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 09:36:17,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:17,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 09:36:17,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 09:36:17,714 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 09:36:17,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:17,968 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 09:36:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:36:17,969 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 09:36:17,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:17,970 INFO L225 Difference]: With dead ends: 76 [2020-10-12 09:36:17,970 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 09:36:17,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:36:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 09:36:17,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 09:36:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 09:36:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 09:36:17,978 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 09:36:17,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:17,978 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 09:36:17,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 09:36:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 09:36:17,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 09:36:17,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:17,980 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:17,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 09:36:17,980 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:17,980 INFO L82 PathProgramCache]: Analyzing trace with hash 439379065, now seen corresponding path program 9 times [2020-10-12 09:36:17,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:17,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957431920] [2020-10-12 09:36:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:17,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:22,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:22,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 09:36:22,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 09:36:22,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:36:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:22,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:36:22,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:23,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:23,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:23,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:23,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:23,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:23,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:36:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 09:36:23,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:36:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:36:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 09:36:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:23,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:36:23,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:23,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 09:36:23,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:23,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:36:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:36:23,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:23,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 09:36:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:23,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 09:36:23,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:23,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 09:36:23,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 09:36:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:23,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 09:36:23,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 09:36:23,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957431920] [2020-10-12 09:36:23,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:23,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 09:36:23,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499353210] [2020-10-12 09:36:23,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 09:36:23,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:23,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 09:36:23,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 09:36:23,305 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 09:36:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:23,571 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 09:36:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:36:23,572 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 09:36:23,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:23,573 INFO L225 Difference]: With dead ends: 80 [2020-10-12 09:36:23,573 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:36:23,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:36:23,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:36:23,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 09:36:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 09:36:23,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 09:36:23,584 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 09:36:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:23,586 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 09:36:23,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 09:36:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 09:36:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 09:36:23,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:23,588 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:23,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 09:36:23,588 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:23,589 INFO L82 PathProgramCache]: Analyzing trace with hash -825406089, now seen corresponding path program 10 times [2020-10-12 09:36:23,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:23,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003928956] [2020-10-12 09:36:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:23,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:23,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 09:36:28,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 09:36:28,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:36:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 09:36:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:36:28,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:28,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:28,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:36:28,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:28,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 09:36:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:36:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:36:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 09:36:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:36:28,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 09:36:28,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:36:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:36:28,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 09:36:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:28,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:28,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 09:36:28,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 09:36:28,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 09:36:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:28,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 09:36:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 09:36:28,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003928956] [2020-10-12 09:36:28,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:28,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:36:28,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166248907] [2020-10-12 09:36:28,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:36:28,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:28,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:36:28,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:36:28,946 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 09:36:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:29,259 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 09:36:29,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 09:36:29,260 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 09:36:29,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:29,262 INFO L225 Difference]: With dead ends: 84 [2020-10-12 09:36:29,262 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 09:36:29,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:36:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 09:36:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 09:36:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 09:36:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 09:36:29,269 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 09:36:29,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:29,269 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 09:36:29,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:36:29,269 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 09:36:29,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 09:36:29,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:29,270 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:29,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 09:36:29,271 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash -840122379, now seen corresponding path program 11 times [2020-10-12 09:36:29,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:29,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300251911] [2020-10-12 09:36:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:29,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:29,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 09:36:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 09:36:34,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:34,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:34,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:34,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:34,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:34,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:34,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 09:36:34,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:34,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 09:36:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:34,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:34,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 09:36:34,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 09:36:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:34,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:34,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 09:36:34,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 09:36:34,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:36:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 09:36:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 09:36:34,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300251911] [2020-10-12 09:36:34,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:34,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 09:36:34,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658202462] [2020-10-12 09:36:34,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 09:36:34,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 09:36:34,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 09:36:34,675 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 09:36:35,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:35,014 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 09:36:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:36:35,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 09:36:35,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:35,016 INFO L225 Difference]: With dead ends: 88 [2020-10-12 09:36:35,016 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 09:36:35,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:36:35,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 09:36:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 09:36:35,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 09:36:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 09:36:35,024 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 09:36:35,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:35,024 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 09:36:35,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 09:36:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 09:36:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 09:36:35,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:35,025 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:35,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 09:36:35,026 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2125011955, now seen corresponding path program 12 times [2020-10-12 09:36:35,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:35,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229508781] [2020-10-12 09:36:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 09:36:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-12 09:36:40,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 09:36:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:40,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:40,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:40,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:40,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:40,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:40,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:40,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:40,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 09:36:40,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:40,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 09:36:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:40,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:40,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:40,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-12 09:36:40,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:40,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 09:36:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:40,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:40,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 09:36:40,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:40,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 09:36:40,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:40,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 09:36:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:40,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 09:36:40,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:36:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 09:36:40,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229508781] [2020-10-12 09:36:40,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:40,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 09:36:40,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332546846] [2020-10-12 09:36:40,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 09:36:40,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:40,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 09:36:40,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 09:36:40,621 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 09:36:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:41,062 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 09:36:41,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 09:36:41,063 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 09:36:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:41,064 INFO L225 Difference]: With dead ends: 92 [2020-10-12 09:36:41,064 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 09:36:41,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:36:41,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 09:36:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 09:36:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 09:36:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 09:36:41,072 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 09:36:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:41,072 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 09:36:41,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 09:36:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 09:36:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 09:36:41,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:41,073 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:41,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 09:36:41,074 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:41,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:41,074 INFO L82 PathProgramCache]: Analyzing trace with hash 657768817, now seen corresponding path program 13 times [2020-10-12 09:36:41,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:41,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608125242] [2020-10-12 09:36:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:41,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 09:36:46,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 09:36:46,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:46,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:46,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:46,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:46,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 09:36:46,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 09:36:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:46,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:46,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 09:36:46,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:46,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 09:36:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:46,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:46,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 09:36:46,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 09:36:46,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 09:36:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 09:36:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 09:36:46,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608125242] [2020-10-12 09:36:46,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:46,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:36:46,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263025192] [2020-10-12 09:36:46,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:36:46,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:46,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:36:46,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:36:46,714 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 09:36:47,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:47,118 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 09:36:47,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 09:36:47,120 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 09:36:47,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:47,122 INFO L225 Difference]: With dead ends: 96 [2020-10-12 09:36:47,122 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 09:36:47,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:36:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 09:36:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 09:36:47,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 09:36:47,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 09:36:47,134 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 09:36:47,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:47,135 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 09:36:47,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:36:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 09:36:47,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 09:36:47,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:47,139 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:47,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 09:36:47,139 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:47,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2099638161, now seen corresponding path program 14 times [2020-10-12 09:36:47,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:47,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960287225] [2020-10-12 09:36:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 09:36:52,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 09:36:52,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:36:52,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:52,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:52,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:52,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:52,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:52,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:52,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 09:36:52,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:52,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 09:36:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:52,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 09:36:52,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:52,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 09:36:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:52,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:52,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 09:36:52,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 09:36:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:36:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:36:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 09:36:52,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960287225] [2020-10-12 09:36:52,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:52,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:36:52,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901599044] [2020-10-12 09:36:52,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:36:52,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:52,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:36:52,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:36:52,729 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 09:36:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:53,106 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 09:36:53,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:36:53,107 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 09:36:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:53,108 INFO L225 Difference]: With dead ends: 100 [2020-10-12 09:36:53,108 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 09:36:53,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:36:53,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 09:36:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 09:36:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 09:36:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 09:36:53,121 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 09:36:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:53,121 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 09:36:53,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:36:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 09:36:53,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 09:36:53,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:53,122 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:53,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 09:36:53,123 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:53,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:53,123 INFO L82 PathProgramCache]: Analyzing trace with hash -671389459, now seen corresponding path program 15 times [2020-10-12 09:36:53,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:53,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682191914] [2020-10-12 09:36:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:53,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 09:36:58,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:36:58,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 09:36:58,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:58,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 09:36:58,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:58,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:36:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:36:58,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:58,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:36:58,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:36:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:36:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:36:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:36:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:58,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:58,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 09:36:58,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:58,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:58,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 09:36:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:58,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:58,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:36:58,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 09:36:58,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:58,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:58,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:58,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 09:36:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:58,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:58,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:36:58,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 09:36:58,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:36:58,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 09:36:58,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:36:58,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:36:58,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:36:58,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:36:58,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:36:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 09:36:58,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682191914] [2020-10-12 09:36:58,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:36:58,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 09:36:58,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79175747] [2020-10-12 09:36:58,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 09:36:58,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:36:58,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 09:36:58,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 09:36:58,817 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 09:36:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:36:59,250 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 09:36:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 09:36:59,251 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 09:36:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:36:59,251 INFO L225 Difference]: With dead ends: 104 [2020-10-12 09:36:59,252 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 09:36:59,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:36:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 09:36:59,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 09:36:59,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 09:36:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 09:36:59,263 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 09:36:59,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:36:59,264 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 09:36:59,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 09:36:59,264 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 09:36:59,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 09:36:59,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:36:59,268 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:36:59,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 09:36:59,269 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:36:59,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:36:59,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1911346453, now seen corresponding path program 16 times [2020-10-12 09:36:59,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:36:59,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440349011] [2020-10-12 09:36:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:36:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:36:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:36:59,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:04,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:04,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 09:37:04,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:04,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:37:04,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:37:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 09:37:04,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:37:04,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:04,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:04,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:04,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:04,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:04,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:04,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:04,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:04,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:37:04,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 09:37:04,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:37:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:04,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:37:04,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:04,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 09:37:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:04,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:04,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:04,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:37:04,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 09:37:04,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:37:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:04,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:37:04,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:04,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 09:37:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:05,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 09:37:05,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-12 09:37:05,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 09:37:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 09:37:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 09:37:05,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440349011] [2020-10-12 09:37:05,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:05,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 09:37:05,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807507577] [2020-10-12 09:37:05,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 09:37:05,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:05,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 09:37:05,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 09:37:05,056 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 09:37:05,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:05,566 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 09:37:05,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 09:37:05,566 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 09:37:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:05,567 INFO L225 Difference]: With dead ends: 108 [2020-10-12 09:37:05,567 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 09:37:05,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:37:05,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 09:37:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 09:37:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 09:37:05,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 09:37:05,573 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 09:37:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:05,574 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 09:37:05,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 09:37:05,574 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 09:37:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 09:37:05,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:05,575 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:05,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 09:37:05,575 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:05,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:05,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1135851113, now seen corresponding path program 17 times [2020-10-12 09:37:05,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:05,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314783663] [2020-10-12 09:37:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:05,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:05,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:10,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:10,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 09:37:10,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 09:37:10,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:37:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 09:37:10,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:37:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:10,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:10,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:10,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:10,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:10,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:10,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:10,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:37:10,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-12 09:37:10,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:37:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:37:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:11,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 09:37:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:11,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:11,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:37:11,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:11,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 09:37:11,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:37:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:11,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:37:11,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:11,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 09:37:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:11,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:11,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 09:37:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 09:37:11,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 09:37:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:11,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 09:37:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:11,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-12 09:37:11,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314783663] [2020-10-12 09:37:11,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:11,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 09:37:11,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254106048] [2020-10-12 09:37:11,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 09:37:11,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:11,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 09:37:11,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 09:37:11,444 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 09:37:11,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:11,992 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 09:37:11,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:37:11,992 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 09:37:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:11,993 INFO L225 Difference]: With dead ends: 112 [2020-10-12 09:37:11,993 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 09:37:11,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 09:37:11,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 09:37:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 09:37:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 09:37:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 09:37:12,000 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 09:37:12,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:12,000 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 09:37:12,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 09:37:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 09:37:12,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 09:37:12,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:12,002 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:12,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 09:37:12,002 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:12,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:12,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1686596455, now seen corresponding path program 18 times [2020-10-12 09:37:12,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:12,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703954374] [2020-10-12 09:37:12,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:17,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:17,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 09:37:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 09:37:17,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:37:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-12 09:37:17,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:37:17,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:17,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:17,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:17,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:17,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:17,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:17,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:17,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:17,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:17,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:17,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:17,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:37:17,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-12 09:37:17,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:37:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:37:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:17,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 09:37:17,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:17,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:17,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:37:17,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:17,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-12 09:37:17,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:37:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:17,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:37:17,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:17,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 09:37:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:17,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:17,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:17,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:17,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 09:37:17,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:17,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 09:37:17,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 09:37:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 09:37:17,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:17,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 09:37:17,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703954374] [2020-10-12 09:37:17,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:17,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 09:37:17,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118388596] [2020-10-12 09:37:17,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 09:37:17,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:17,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 09:37:17,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 09:37:17,970 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 09:37:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:18,538 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 09:37:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 09:37:18,538 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 09:37:18,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:18,539 INFO L225 Difference]: With dead ends: 116 [2020-10-12 09:37:18,539 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 09:37:18,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 09:37:18,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 09:37:18,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 09:37:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 09:37:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 09:37:18,546 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 09:37:18,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:18,547 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 09:37:18,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 09:37:18,547 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 09:37:18,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 09:37:18,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:18,549 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:18,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 09:37:18,549 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:18,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:18,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1062250981, now seen corresponding path program 19 times [2020-10-12 09:37:18,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:18,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70663177] [2020-10-12 09:37:18,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:18,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:18,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:18,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:23,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:23,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 09:37:23,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:23,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 09:37:23,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:37:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-12 09:37:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:37:23,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:23,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:23,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:23,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:23,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:23,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:23,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:23,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:23,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:23,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:23,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:23,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:23,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:37:23,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:23,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-12 09:37:23,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:37:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:23,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:37:23,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:24,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 09:37:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:24,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:24,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:37:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-12 09:37:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:37:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:37:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:24,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 09:37:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:24,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:25,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 09:37:25,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-12 09:37:25,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:37:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:25,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 09:37:25,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 09:37:25,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70663177] [2020-10-12 09:37:25,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:25,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:37:25,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260476483] [2020-10-12 09:37:25,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:37:25,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:25,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:37:25,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:37:25,080 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 09:37:25,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:25,698 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-12 09:37:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 09:37:25,698 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 09:37:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:25,699 INFO L225 Difference]: With dead ends: 120 [2020-10-12 09:37:25,700 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 09:37:25,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 09:37:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 09:37:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 09:37:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 09:37:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 09:37:25,709 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 09:37:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:25,710 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 09:37:25,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:37:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 09:37:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 09:37:25,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:25,712 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:25,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 09:37:25,712 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:25,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:25,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1679175197, now seen corresponding path program 20 times [2020-10-12 09:37:25,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:25,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198922480] [2020-10-12 09:37:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:25,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 09:37:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:30,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 09:37:30,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:37:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:30,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:37:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:30,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:30,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:30,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:30,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:30,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:30,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:30,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:30,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:30,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:37:30,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-12 09:37:30,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:37:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:30,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:37:30,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:31,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 09:37:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:31,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:31,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:31,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:37:31,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-12 09:37:31,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:37:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:37:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 09:37:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:31,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:31,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:31,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 09:37:31,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:31,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-12 09:37:31,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:31,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 09:37:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:32,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 09:37:32,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 09:37:32,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198922480] [2020-10-12 09:37:32,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:32,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 09:37:32,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118154312] [2020-10-12 09:37:32,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 09:37:32,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:32,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 09:37:32,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:37:32,022 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-12 09:37:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:32,675 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 09:37:32,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 09:37:32,676 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-12 09:37:32,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:32,677 INFO L225 Difference]: With dead ends: 124 [2020-10-12 09:37:32,677 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 09:37:32,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 09:37:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 09:37:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 09:37:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 09:37:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 09:37:32,684 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-12 09:37:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:32,685 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 09:37:32,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 09:37:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 09:37:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 09:37:32,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:32,687 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:32,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 09:37:32,688 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:32,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:32,688 INFO L82 PathProgramCache]: Analyzing trace with hash -783989919, now seen corresponding path program 21 times [2020-10-12 09:37:32,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:32,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177746555] [2020-10-12 09:37:32,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:32,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:37,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:37,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 09:37:37,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 09:37:37,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 09:37:37,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:37,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:37,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:37,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:37,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:37,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:37,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:37,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:37,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:38,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:38,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:37:38,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 09:37:38,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:38,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:38,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:38,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:38,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:38,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 09:37:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:38,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:38,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:38,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:37:38,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-12 09:37:38,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:38,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:38,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 09:37:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:38,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:39,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:39,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 09:37:39,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 727 [2020-10-12 09:37:39,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 09:37:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:39,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 09:37:39,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 09:37:39,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177746555] [2020-10-12 09:37:39,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:39,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 09:37:39,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944195798] [2020-10-12 09:37:39,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 09:37:39,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:39,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 09:37:39,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 09:37:39,440 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-12 09:37:40,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:40,135 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-12 09:37:40,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 09:37:40,138 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-12 09:37:40,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:40,139 INFO L225 Difference]: With dead ends: 128 [2020-10-12 09:37:40,139 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 09:37:40,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 09:37:40,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 09:37:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 09:37:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 09:37:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 09:37:40,152 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-12 09:37:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:40,153 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 09:37:40,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 09:37:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 09:37:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 09:37:40,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:40,155 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:40,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 09:37:40,155 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:40,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:40,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1533894239, now seen corresponding path program 22 times [2020-10-12 09:37:40,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:40,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861195820] [2020-10-12 09:37:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:40,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:45,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:45,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 09:37:45,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:45,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 09:37:45,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:45,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:45,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:45,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:45,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:45,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:45,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:45,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:45,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:45,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:45,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:45,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:45,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:45,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:45,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:45,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:45,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-12 09:37:45,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:45,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:45,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:45,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 09:37:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:45,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:46,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-12 09:37:46,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:46,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:46,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 09:37:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:46,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:46,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:46,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 09:37:46,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:46,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-10-12 09:37:46,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 09:37:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:37:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 09:37:46,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861195820] [2020-10-12 09:37:46,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:46,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 09:37:46,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576746492] [2020-10-12 09:37:46,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 09:37:46,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:46,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 09:37:46,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 09:37:46,747 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-12 09:37:47,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:47,503 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-12 09:37:47,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 09:37:47,503 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-12 09:37:47,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:47,504 INFO L225 Difference]: With dead ends: 132 [2020-10-12 09:37:47,504 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 09:37:47,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 09:37:47,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 09:37:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 09:37:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 09:37:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 09:37:47,510 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-12 09:37:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:47,511 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 09:37:47,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 09:37:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 09:37:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 09:37:47,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:47,512 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:47,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 09:37:47,512 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:47,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:47,513 INFO L82 PathProgramCache]: Analyzing trace with hash -242973987, now seen corresponding path program 23 times [2020-10-12 09:37:47,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:47,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195338867] [2020-10-12 09:37:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:47,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:47,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:52,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:52,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 09:37:52,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:37:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 09:37:52,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:37:52,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:52,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:37:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:52,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:52,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:37:52,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:52,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:37:52,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:37:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:37:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:37:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:52,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:37:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:52,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:52,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:52,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:52,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:37:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-12 09:37:52,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:52,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 09:37:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:53,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:53,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-12 09:37:53,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:53,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:53,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:53,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 09:37:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:53,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:54,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:37:54,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 09:37:54,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:37:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-12 09:37:54,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:37:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 09:37:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:37:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 09:37:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:37:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 09:37:54,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195338867] [2020-10-12 09:37:54,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:37:54,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 09:37:54,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773819987] [2020-10-12 09:37:54,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 09:37:54,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:37:54,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 09:37:54,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 09:37:54,176 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-12 09:37:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:37:54,961 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-12 09:37:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 09:37:54,962 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-12 09:37:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:37:54,963 INFO L225 Difference]: With dead ends: 136 [2020-10-12 09:37:54,963 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 09:37:54,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 09:37:54,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 09:37:54,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 09:37:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 09:37:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 09:37:54,971 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-12 09:37:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:37:54,971 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 09:37:54,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 09:37:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 09:37:54,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 09:37:54,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:37:54,974 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:37:54,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 09:37:54,974 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:37:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:37:54,974 INFO L82 PathProgramCache]: Analyzing trace with hash 465899739, now seen corresponding path program 24 times [2020-10-12 09:37:54,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:37:54,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851779195] [2020-10-12 09:37:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:37:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:37:54,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:55,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:37:59,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:00,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 09:38:00,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:00,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:38:00,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:38:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 09:38:00,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:38:00,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:00,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:00,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:00,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 09:38:00,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:00,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:00,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:00,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:00,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:38:00,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-12 09:38:00,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:38:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:38:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:00,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 09:38:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:38:01,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-12 09:38:01,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:38:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:01,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:38:01,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 09:38:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:01,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:01,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:01,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 09:38:01,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-12 09:38:01,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:38:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 09:38:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 09:38:01,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851779195] [2020-10-12 09:38:01,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:01,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:38:01,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070624858] [2020-10-12 09:38:01,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:38:01,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:38:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:38:01,679 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-12 09:38:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:02,423 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-12 09:38:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 09:38:02,424 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-12 09:38:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:02,425 INFO L225 Difference]: With dead ends: 140 [2020-10-12 09:38:02,425 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 09:38:02,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 09:38:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 09:38:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 09:38:02,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 09:38:02,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 09:38:02,431 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-12 09:38:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:02,432 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 09:38:02,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 09:38:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 09:38:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 09:38:02,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:02,433 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:02,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 09:38:02,433 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:02,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:02,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1233217625, now seen corresponding path program 25 times [2020-10-12 09:38:02,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:02,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964413280] [2020-10-12 09:38:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:02,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 09:38:07,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-12 09:38:07,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:38:07,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-12 09:38:07,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:38:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:07,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:07,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:07,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:07,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:07,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:07,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:07,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:38:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-10-12 09:38:07,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:38:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:38:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 09:38:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:08,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:38:08,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:08,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-12 09:38:08,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:38:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:08,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:38:08,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:08,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 09:38:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:08,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:09,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:09,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 09:38:09,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:09,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-12 09:38:09,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 09:38:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:09,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 09:38:09,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 09:38:09,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964413280] [2020-10-12 09:38:09,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:09,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 09:38:09,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006265007] [2020-10-12 09:38:09,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 09:38:09,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:09,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 09:38:09,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 09:38:09,188 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-12 09:38:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:10,035 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-12 09:38:10,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 09:38:10,036 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-12 09:38:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:10,037 INFO L225 Difference]: With dead ends: 144 [2020-10-12 09:38:10,037 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 09:38:10,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 09:38:10,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 09:38:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 09:38:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 09:38:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 09:38:10,043 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-12 09:38:10,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:10,043 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 09:38:10,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 09:38:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 09:38:10,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 09:38:10,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:10,044 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:10,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 09:38:10,044 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:10,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:10,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1730406743, now seen corresponding path program 26 times [2020-10-12 09:38:10,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:10,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743862417] [2020-10-12 09:38:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:10,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:10,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 09:38:15,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-12 09:38:15,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:38:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:15,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:38:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:15,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:15,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:15,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:15,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:15,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:15,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:15,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:38:15,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:15,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-12 09:38:15,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:15,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:38:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:15,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:38:15,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 09:38:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:16,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:16,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:38:16,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 09:38:16,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:38:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:16,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:38:16,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 09:38:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:16,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:16,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 09:38:16,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:16,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-12 09:38:16,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 09:38:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:16,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 09:38:16,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-12 09:38:16,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743862417] [2020-10-12 09:38:16,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:16,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 09:38:16,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331761406] [2020-10-12 09:38:16,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 09:38:16,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:16,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 09:38:16,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 09:38:16,878 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-12 09:38:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:17,808 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-12 09:38:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:38:17,809 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-12 09:38:17,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:17,810 INFO L225 Difference]: With dead ends: 148 [2020-10-12 09:38:17,810 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 09:38:17,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 09:38:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 09:38:17,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 09:38:17,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 09:38:17,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 09:38:17,818 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-12 09:38:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:17,818 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 09:38:17,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 09:38:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 09:38:17,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 09:38:17,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:17,820 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:17,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 09:38:17,820 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:17,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:17,820 INFO L82 PathProgramCache]: Analyzing trace with hash -198249515, now seen corresponding path program 27 times [2020-10-12 09:38:17,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:17,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231919469] [2020-10-12 09:38:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:17,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:17,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:22,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:22,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 09:38:22,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:22,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 09:38:22,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:38:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:38:22,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:22,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:22,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:22,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:22,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:22,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:22,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:22,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:22,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:23,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:38:23,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 429 [2020-10-12 09:38:23,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:38:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:23,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:38:23,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:23,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 09:38:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:23,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:24,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:38:24,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-12 09:38:24,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:38:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:38:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 09:38:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:24,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:24,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:24,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 09:38:24,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-12 09:38:24,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 09:38:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 09:38:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 09:38:24,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231919469] [2020-10-12 09:38:24,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:24,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 09:38:24,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666565332] [2020-10-12 09:38:24,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 09:38:24,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:24,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 09:38:24,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 09:38:24,766 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-12 09:38:25,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:25,719 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-12 09:38:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 09:38:25,720 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-12 09:38:25,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:25,721 INFO L225 Difference]: With dead ends: 152 [2020-10-12 09:38:25,721 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 09:38:25,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 09:38:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 09:38:25,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 09:38:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 09:38:25,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 09:38:25,728 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-12 09:38:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:25,728 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 09:38:25,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 09:38:25,728 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 09:38:25,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 09:38:25,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:25,729 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:25,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 09:38:25,730 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1724061741, now seen corresponding path program 28 times [2020-10-12 09:38:25,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:25,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670719751] [2020-10-12 09:38:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:30,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:30,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 09:38:30,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 09:38:30,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:38:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-12 09:38:30,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:38:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:30,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:30,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:30,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:30,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:30,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:30,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:30,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:30,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:30,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:31,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:31,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:38:31,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:31,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-12 09:38:31,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:31,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:38:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:31,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:38:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:31,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 09:38:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:31,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:32,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:38:32,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-12 09:38:32,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:38:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:32,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:38:32,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 09:38:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:32,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:32,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:32,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 09:38:32,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:32,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-12 09:38:32,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 09:38:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:32,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 09:38:32,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 09:38:32,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670719751] [2020-10-12 09:38:32,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:32,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 09:38:32,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040447829] [2020-10-12 09:38:32,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 09:38:32,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 09:38:32,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:38:32,938 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-12 09:38:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:33,979 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-12 09:38:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 09:38:33,980 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-12 09:38:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:33,982 INFO L225 Difference]: With dead ends: 156 [2020-10-12 09:38:33,982 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 09:38:33,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 09:38:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 09:38:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-12 09:38:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 09:38:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-12 09:38:33,989 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-12 09:38:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:33,989 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-12 09:38:33,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 09:38:33,990 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-12 09:38:33,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 09:38:33,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:33,991 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:33,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 09:38:33,991 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:33,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1040196945, now seen corresponding path program 29 times [2020-10-12 09:38:33,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:33,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667400111] [2020-10-12 09:38:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:34,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:34,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:34,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:34,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:39,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:39,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 09:38:39,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:39,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 09:38:39,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:38:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:39,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:38:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:39,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:39,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:39,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:39,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:39,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:39,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:39,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:38:39,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:39,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 502 [2020-10-12 09:38:39,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:39,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:38:39,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:39,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:38:39,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:40,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 09:38:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:40,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:40,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:38:40,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-12 09:38:40,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:38:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:38:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:40,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 09:38:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:40,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:41,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:41,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 09:38:41,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:41,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-12 09:38:41,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 09:38:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:41,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 09:38:41,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 09:38:41,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667400111] [2020-10-12 09:38:41,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:41,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 09:38:41,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231779302] [2020-10-12 09:38:41,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 09:38:41,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:41,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 09:38:41,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 09:38:41,207 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-12 09:38:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:42,390 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-12 09:38:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 09:38:42,390 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-12 09:38:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:42,391 INFO L225 Difference]: With dead ends: 160 [2020-10-12 09:38:42,392 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 09:38:42,394 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 09:38:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 09:38:42,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 09:38:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 09:38:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-12 09:38:42,399 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-12 09:38:42,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:42,399 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-12 09:38:42,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 09:38:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-12 09:38:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 09:38:42,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:42,401 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:42,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 09:38:42,401 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:42,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:42,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1622995889, now seen corresponding path program 30 times [2020-10-12 09:38:42,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:42,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809648519] [2020-10-12 09:38:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:42,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:42,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:47,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:47,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 09:38:47,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 09:38:47,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 09:38:47,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:47,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:47,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:47,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:47,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:47,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:47,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:48,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:48,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:48,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-12 09:38:48,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:48,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:48,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 09:38:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:48,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:49,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:49,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-12 09:38:49,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:49,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 09:38:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:49,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:49,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:49,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 09:38:49,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:49,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-12 09:38:49,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 09:38:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:49,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 09:38:49,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 09:38:49,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809648519] [2020-10-12 09:38:49,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:49,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 09:38:49,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154446712] [2020-10-12 09:38:49,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 09:38:49,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:49,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 09:38:49,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 09:38:49,832 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-12 09:38:50,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:50,939 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-12 09:38:50,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 09:38:50,940 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-12 09:38:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:50,941 INFO L225 Difference]: With dead ends: 164 [2020-10-12 09:38:50,941 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 09:38:50,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 09:38:50,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 09:38:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-12 09:38:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 09:38:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-12 09:38:50,948 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-12 09:38:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:50,949 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-12 09:38:50,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 09:38:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-12 09:38:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 09:38:50,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:50,950 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:50,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 09:38:50,951 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:50,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:50,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1692925133, now seen corresponding path program 31 times [2020-10-12 09:38:50,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:50,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431644973] [2020-10-12 09:38:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:50,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:51,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 09:38:56,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:38:56,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-12 09:38:56,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:38:56,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:56,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:38:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:56,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:56,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:38:56,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:38:56,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:38:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:38:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:38:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:38:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:56,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:56,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:56,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:38:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-12 09:38:56,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:56,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:57,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 09:38:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:57,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:57,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:57,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:57,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:57,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-12 09:38:57,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:57,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 09:38:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:58,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:58,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:38:58,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 09:38:58,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:38:58,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-12 09:38:58,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:38:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 09:38:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:38:58,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 09:38:58,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:38:58,630 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-12 09:38:58,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431644973] [2020-10-12 09:38:58,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:38:58,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 09:38:58,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500728424] [2020-10-12 09:38:58,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 09:38:58,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:38:58,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 09:38:58,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 09:38:58,632 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-12 09:38:59,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:38:59,799 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-12 09:38:59,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 09:38:59,800 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-12 09:38:59,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:38:59,801 INFO L225 Difference]: With dead ends: 168 [2020-10-12 09:38:59,801 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 09:38:59,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 09:38:59,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 09:38:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 09:38:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 09:38:59,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-12 09:38:59,808 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-12 09:38:59,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:38:59,809 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-12 09:38:59,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 09:38:59,809 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-12 09:38:59,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 09:38:59,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:38:59,810 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:38:59,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 09:38:59,810 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:38:59,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:38:59,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1209444661, now seen corresponding path program 32 times [2020-10-12 09:38:59,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:38:59,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571119343] [2020-10-12 09:38:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:38:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:38:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:59,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:38:59,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:04,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:04,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 09:39:04,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:39:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 09:39:04,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:39:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:39:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:39:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:04,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:04,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:04,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:04,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:04,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:04,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:04,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:04,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:04,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:04,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:05,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:05,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:39:05,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-12 09:39:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:39:05,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:39:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:06,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 09:39:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:06,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:06,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:39:06,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 694 [2020-10-12 09:39:06,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:39:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:39:06,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:06,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 09:39:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:06,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:07,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:07,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 09:39:07,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-10-12 09:39:07,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 09:39:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:07,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 09:39:07,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 09:39:07,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571119343] [2020-10-12 09:39:07,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:07,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 09:39:07,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133692155] [2020-10-12 09:39:07,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 09:39:07,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:07,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 09:39:07,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 09:39:07,732 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-12 09:39:08,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:08,998 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-12 09:39:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 09:39:08,999 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-12 09:39:08,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:09,000 INFO L225 Difference]: With dead ends: 172 [2020-10-12 09:39:09,000 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 09:39:09,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 09:39:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 09:39:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 09:39:09,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 09:39:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-12 09:39:09,008 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-12 09:39:09,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:09,008 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-12 09:39:09,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 09:39:09,008 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-12 09:39:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 09:39:09,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:09,010 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:09,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 09:39:09,010 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:09,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:09,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1482259017, now seen corresponding path program 33 times [2020-10-12 09:39:09,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:09,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42876483] [2020-10-12 09:39:09,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:09,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:14,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:14,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 09:39:14,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:39:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 09:39:14,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:39:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-12 09:39:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:39:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:14,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:14,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:14,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:14,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:14,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:14,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:14,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:14,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:14,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:39:14,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-12 09:39:14,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:39:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:39:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:15,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 09:39:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:15,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:16,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:16,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:39:16,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:16,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-12 09:39:16,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:39:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:16,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:39:16,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 09:39:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:16,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:17,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:17,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 09:39:17,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-12 09:39:17,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 09:39:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 09:39:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 09:39:17,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42876483] [2020-10-12 09:39:17,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:17,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 09:39:17,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487375308] [2020-10-12 09:39:17,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 09:39:17,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:17,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 09:39:17,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 09:39:17,187 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-12 09:39:18,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:39:18,514 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-12 09:39:18,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 09:39:18,515 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-12 09:39:18,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:39:18,516 INFO L225 Difference]: With dead ends: 176 [2020-10-12 09:39:18,516 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 09:39:18,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 09:39:18,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 09:39:18,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-12 09:39:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 09:39:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-12 09:39:18,522 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-12 09:39:18,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:39:18,522 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-12 09:39:18,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 09:39:18,523 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-12 09:39:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 09:39:18,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:39:18,524 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:39:18,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 09:39:18,524 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:39:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:39:18,525 INFO L82 PathProgramCache]: Analyzing trace with hash 862111559, now seen corresponding path program 34 times [2020-10-12 09:39:18,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:39:18,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377781146] [2020-10-12 09:39:18,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:39:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:23,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:23,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 09:39:23,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:39:23,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 09:39:23,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:39:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 09:39:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:39:23,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:23,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:39:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:23,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:23,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:23,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:39:23,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:39:23,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:39:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:39:23,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:39:23,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:23,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 09:39:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:24,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:24,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:39:24,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:39:24,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-12 09:39:24,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:39:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:39:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:25,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 09:39:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:25,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:25,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:25,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:39:25,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-12 09:39:25,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:39:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:25,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:39:25,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:25,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 09:39:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:39:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:39:26,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:39:26,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 09:39:26,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 09:39:26,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-12 09:39:26,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:39:26,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 09:39:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 09:39:26,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 09:39:26,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:39:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 09:39:26,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377781146] [2020-10-12 09:39:26,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:39:26,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 09:39:26,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383733954] [2020-10-12 09:39:26,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 09:39:26,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:39:26,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 09:39:26,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 09:39:26,785 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states.