/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/reducercommutativity/max20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:27:33,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:27:33,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:27:33,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:27:33,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:27:33,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:27:33,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:27:33,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:27:33,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:27:33,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:27:33,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:27:33,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:27:33,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:27:33,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:27:33,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:27:33,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:27:33,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:27:33,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:27:33,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:27:33,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:27:33,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:27:33,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:27:33,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:27:33,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:27:33,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:27:33,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:27:33,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:27:33,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:27:33,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:27:33,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:27:33,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:27:33,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:27:33,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:27:33,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:27:33,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:27:33,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:27:33,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:27:33,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:27:33,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:27:33,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:27:33,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:27:33,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 18:27:33,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:27:33,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:27:33,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:27:33,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:27:33,744 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:27:33,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:27:33,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:27:33,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:27:33,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:27:33,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:27:33,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:27:33,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:27:33,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:27:33,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:27:33,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:27:33,749 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:27:33,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:27:33,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:27:33,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:27:33,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:27:33,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:27:33,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:27:33,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:27:33,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:27:33,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:27:33,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:27:33,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:27:33,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:27:33,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:27:33,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:27:34,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:27:34,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:27:34,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:27:34,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:27:34,129 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:27:34,130 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-12 18:27:34,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffc5dfe5d/032ce580ef9d4239af6bea78dc496a29/FLAG9838ee80e [2020-10-12 18:27:34,696 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:27:34,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max20-1.i [2020-10-12 18:27:34,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffc5dfe5d/032ce580ef9d4239af6bea78dc496a29/FLAG9838ee80e [2020-10-12 18:27:35,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ffc5dfe5d/032ce580ef9d4239af6bea78dc496a29 [2020-10-12 18:27:35,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:27:35,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:27:35,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:27:35,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:27:35,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:27:35,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef00bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35, skipping insertion in model container [2020-10-12 18:27:35,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:27:35,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:27:35,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:27:35,385 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:27:35,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:27:35,460 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:27:35,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35 WrapperNode [2020-10-12 18:27:35,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:27:35,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:27:35,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:27:35,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:27:35,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (1/1) ... [2020-10-12 18:27:35,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:27:35,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:27:35,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:27:35,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:27:35,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:27:35,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:27:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:27:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-12 18:27:35,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:27:35,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:27:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:27:35,697 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-12 18:27:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:27:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:27:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:27:36,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:27:36,010 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:27:36,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:27:36 BoogieIcfgContainer [2020-10-12 18:27:36,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:27:36,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:27:36,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:27:36,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:27:36,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:27:35" (1/3) ... [2020-10-12 18:27:36,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e07a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:27:36, skipping insertion in model container [2020-10-12 18:27:36,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:27:35" (2/3) ... [2020-10-12 18:27:36,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e07a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:27:36, skipping insertion in model container [2020-10-12 18:27:36,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:27:36" (3/3) ... [2020-10-12 18:27:36,026 INFO L109 eAbstractionObserver]: Analyzing ICFG max20-1.i [2020-10-12 18:27:36,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:27:36,048 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:27:36,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:27:36,096 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:27:36,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:27:36,097 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:27:36,097 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:27:36,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:27:36,098 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:27:36,098 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:27:36,098 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:27:36,121 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-12 18:27:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:27:36,129 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:36,131 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 18:27:36,131 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:36,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-12 18:27:36,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:36,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42738343] [2020-10-12 18:27:36,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:36,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:36,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:37,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:27:37,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:27:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1424 [2020-10-12 18:27:37,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:37,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:27:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:27:37,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:27:37,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:27:37,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:37,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:37,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:37,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:37,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:37,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:27:37,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:37,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:37,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:37,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:37,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:37,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:37,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:27:37,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:37,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:37,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:27:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:27:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:38,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:38,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:27:38,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 18:27:38,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:38,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:27:38,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:38,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:27:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:38,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:38,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:38,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:27:38,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:38,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:27:38,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:38,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:27:38,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:38,146 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 18:27:38,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42738343] [2020-10-12 18:27:38,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:27:38,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:27:38,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152096158] [2020-10-12 18:27:38,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:27:38,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:38,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:27:38,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:27:38,178 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 11 states. [2020-10-12 18:27:38,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:38,620 INFO L93 Difference]: Finished difference Result 89 states and 129 transitions. [2020-10-12 18:27:38,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:27:38,623 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:27:38,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:38,635 INFO L225 Difference]: With dead ends: 89 [2020-10-12 18:27:38,635 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 18:27:38,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:27:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 18:27:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-12 18:27:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 18:27:38,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-12 18:27:38,707 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 32 [2020-10-12 18:27:38,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:38,708 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-12 18:27:38,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:27:38,709 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-12 18:27:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 18:27:38,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:38,712 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, 1, 1] [2020-10-12 18:27:38,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:27:38,713 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:38,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1328588870, now seen corresponding path program 1 times [2020-10-12 18:27:38,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:38,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845777913] [2020-10-12 18:27:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:38,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:39,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:39,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:27:39,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:27:39,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-10-12 18:27:39,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:27:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:27:39,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:27:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:39,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:39,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:39,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:39,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:39,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:27:39,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:39,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:39,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:39,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:39,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:39,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:27:39,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:39,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 18:27:39,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:27:39,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:39,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:27:39,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:39,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:27:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:39,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:39,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:27:39,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:27:39,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:39,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:27:39,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:39,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:27:39,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:39,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:27:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:40,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:27:40,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 18:27:40,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:27:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:27:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:40,031 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 18:27:40,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845777913] [2020-10-12 18:27:40,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:40,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:27:40,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438468899] [2020-10-12 18:27:40,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:27:40,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:40,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:27:40,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:27:40,035 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 5 states. [2020-10-12 18:27:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:40,164 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2020-10-12 18:27:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:27:40,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-10-12 18:27:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:40,167 INFO L225 Difference]: With dead ends: 66 [2020-10-12 18:27:40,167 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:27:40,169 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 18:27:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:27:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-12 18:27:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:27:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-10-12 18:27:40,178 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 36 [2020-10-12 18:27:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:40,179 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-10-12 18:27:40,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:27:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-10-12 18:27:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 18:27:40,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:40,181 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 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 18:27:40,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:27:40,182 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:40,182 INFO L82 PathProgramCache]: Analyzing trace with hash 981704641, now seen corresponding path program 2 times [2020-10-12 18:27:40,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:40,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70127885] [2020-10-12 18:27:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:40,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:43,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:45,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:27:45,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-12 18:27:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:27:45,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:27:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:27:45,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:27:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:45,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:45,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:45,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:27:45,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:45,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:45,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:45,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:45,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 18:27:45,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:45,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:27:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 18:27:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:45,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:45,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:45,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-12 18:27:45,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:27:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:27:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:46,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 18:27:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:46,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:46,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:27:46,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 18:27:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:27:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:27:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 7 proven. 77 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 18:27:46,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70127885] [2020-10-12 18:27:46,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:46,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:27:46,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859393784] [2020-10-12 18:27:46,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:27:46,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:46,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:27:46,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:27:46,219 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 19 states. [2020-10-12 18:27:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:47,532 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-10-12 18:27:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:27:47,532 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-10-12 18:27:47,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:47,534 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:27:47,535 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 18:27:47,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:27:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 18:27:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2020-10-12 18:27:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 18:27:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-10-12 18:27:47,551 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 56 [2020-10-12 18:27:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:47,551 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-10-12 18:27:47,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:27:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-10-12 18:27:47,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:27:47,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:47,554 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:47,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:27:47,555 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:47,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1260494052, now seen corresponding path program 1 times [2020-10-12 18:27:47,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:47,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423760554] [2020-10-12 18:27:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:47,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:47,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:27:52,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:27:52,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 18:27:52,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:27:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-12 18:27:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:27:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:52,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:27:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:52,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-12 18:27:52,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:52,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:52,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:27:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:52,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 18:27:52,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:27:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:27:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:52,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:27:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:52,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:52,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:52,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:27:52,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:27:52,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-12 18:27:52,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:52,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:27:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:27:52,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 18:27:52,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 29 proven. 138 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-12 18:27:53,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423760554] [2020-10-12 18:27:53,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:27:53,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:27:53,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639549191] [2020-10-12 18:27:53,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:27:53,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:27:53,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:27:53,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:27:53,280 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 18 states. [2020-10-12 18:27:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:27:54,512 INFO L93 Difference]: Finished difference Result 201 states and 288 transitions. [2020-10-12 18:27:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 18:27:54,513 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 68 [2020-10-12 18:27:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:27:54,517 INFO L225 Difference]: With dead ends: 201 [2020-10-12 18:27:54,518 INFO L226 Difference]: Without dead ends: 138 [2020-10-12 18:27:54,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=387, Invalid=1253, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:27:54,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-12 18:27:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2020-10-12 18:27:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-12 18:27:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2020-10-12 18:27:54,546 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 68 [2020-10-12 18:27:54,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:27:54,547 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2020-10-12 18:27:54,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:27:54,547 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2020-10-12 18:27:54,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 18:27:54,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:27:54,551 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:27:54,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:27:54,551 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:27:54,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:27:54,552 INFO L82 PathProgramCache]: Analyzing trace with hash 587346034, now seen corresponding path program 1 times [2020-10-12 18:27:54,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:27:54,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457273184] [2020-10-12 18:27:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:27:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:54,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:54,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:54,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:56,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:58,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:59,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:59,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 18:27:59,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:27:59,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:27:59,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-12 18:27:59,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:27:59,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 18:27:59,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:27:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:27:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:59,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:59,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:27:59,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:27:59,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:27:59,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:27:59,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:27:59,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:27:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:27:59,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:27:59,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:27:59,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:27:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:27:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:27:59,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:00,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:00,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:00,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-12 18:28:00,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:28:00,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:00,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:28:00,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:01,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 18:28:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:01,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:01,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:02,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:02,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:02,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:28:02,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-12 18:28:02,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:28:02,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:02,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:28:02,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:02,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:28:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:03,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:03,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:03,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-12 18:28:03,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:03,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:28:03,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 32 proven. 416 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 18:28:03,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457273184] [2020-10-12 18:28:03,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:03,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 18:28:03,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580362257] [2020-10-12 18:28:03,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 18:28:03,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:03,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 18:28:03,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1346, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:28:03,716 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 39 states. [2020-10-12 18:28:04,914 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-12 18:28:05,263 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-10-12 18:28:05,465 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2020-10-12 18:28:05,622 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-10-12 18:28:05,839 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2020-10-12 18:28:06,013 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-12 18:28:06,252 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-12 18:28:06,544 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-12 18:28:06,911 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2020-10-12 18:28:07,095 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2020-10-12 18:28:07,312 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-10-12 18:28:07,663 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-12 18:28:07,974 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2020-10-12 18:28:08,450 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-10-12 18:28:08,839 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2020-10-12 18:28:09,393 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2020-10-12 18:28:09,633 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2020-10-12 18:28:09,821 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-12 18:28:10,182 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2020-10-12 18:28:10,384 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-12 18:28:10,550 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-12 18:28:10,893 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-12 18:28:11,164 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-10-12 18:28:11,921 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 56 [2020-10-12 18:28:12,268 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2020-10-12 18:28:12,519 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 56 [2020-10-12 18:28:12,726 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 54 [2020-10-12 18:28:12,925 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2020-10-12 18:28:13,144 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2020-10-12 18:28:13,403 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-12 18:28:13,651 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-12 18:28:13,942 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-10-12 18:28:14,466 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-12 18:28:14,805 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-12 18:28:14,982 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-12 18:28:15,259 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2020-10-12 18:28:15,947 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-12 18:28:16,321 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-12 18:28:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:18,111 INFO L93 Difference]: Finished difference Result 314 states and 495 transitions. [2020-10-12 18:28:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-12 18:28:18,113 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 94 [2020-10-12 18:28:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:18,118 INFO L225 Difference]: With dead ends: 314 [2020-10-12 18:28:18,118 INFO L226 Difference]: Without dead ends: 303 [2020-10-12 18:28:18,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 6 SyntacticMatches, 6 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1371, Invalid=11739, Unknown=0, NotChecked=0, Total=13110 [2020-10-12 18:28:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-12 18:28:18,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 135. [2020-10-12 18:28:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-12 18:28:18,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 175 transitions. [2020-10-12 18:28:18,196 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 175 transitions. Word has length 94 [2020-10-12 18:28:18,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:18,197 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 175 transitions. [2020-10-12 18:28:18,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-12 18:28:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 175 transitions. [2020-10-12 18:28:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-12 18:28:18,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:18,199 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 13, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:18,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:28:18,200 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:18,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:18,200 INFO L82 PathProgramCache]: Analyzing trace with hash 806200752, now seen corresponding path program 2 times [2020-10-12 18:28:18,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:18,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075752599] [2020-10-12 18:28:18,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:18,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:18,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 18:28:23,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:23,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 18:28:23,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:28:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:23,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:28:23,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:23,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:23,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 18:28:23,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:28:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 18:28:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:23,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:23,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 18:28:23,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:23,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:28:23,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:28:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:23,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:28:23,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 18:28:23,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:28:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:28:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:23,542 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 135 proven. 270 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-12 18:28:23,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075752599] [2020-10-12 18:28:23,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:23,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:28:23,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636405618] [2020-10-12 18:28:23,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:28:23,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:23,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:28:23,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:28:23,545 INFO L87 Difference]: Start difference. First operand 135 states and 175 transitions. Second operand 9 states. [2020-10-12 18:28:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:23,783 INFO L93 Difference]: Finished difference Result 282 states and 373 transitions. [2020-10-12 18:28:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:28:23,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-12 18:28:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:23,787 INFO L225 Difference]: With dead ends: 282 [2020-10-12 18:28:23,787 INFO L226 Difference]: Without dead ends: 156 [2020-10-12 18:28:23,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:28:23,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-12 18:28:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 142. [2020-10-12 18:28:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-12 18:28:23,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 182 transitions. [2020-10-12 18:28:23,837 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 182 transitions. Word has length 94 [2020-10-12 18:28:23,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:23,837 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 182 transitions. [2020-10-12 18:28:23,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:28:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 182 transitions. [2020-10-12 18:28:23,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:28:23,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:23,841 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:23,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:28:23,842 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:23,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:23,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1986084589, now seen corresponding path program 2 times [2020-10-12 18:28:23,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:23,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592335949] [2020-10-12 18:28:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:23,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:28,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:28,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:28:28,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:28,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:28:28,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:28,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:28,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:28,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:28,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:28,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:28,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:28,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:28,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:28,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:28,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:28,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:28,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:28:28,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:28,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 18:28:28,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:28,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:28,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:28:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:28:29,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 18:28:29,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:29,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:28:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:29,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:28:29,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 18:28:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:28:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:28:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 198 proven. 396 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 18:28:29,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592335949] [2020-10-12 18:28:29,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:29,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:28:29,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619714668] [2020-10-12 18:28:29,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:28:29,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:29,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:28:29,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:28:29,190 INFO L87 Difference]: Start difference. First operand 142 states and 182 transitions. Second operand 10 states. [2020-10-12 18:28:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:29,491 INFO L93 Difference]: Finished difference Result 308 states and 412 transitions. [2020-10-12 18:28:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:28:29,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-12 18:28:29,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:29,494 INFO L225 Difference]: With dead ends: 308 [2020-10-12 18:28:29,494 INFO L226 Difference]: Without dead ends: 175 [2020-10-12 18:28:29,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 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 18:28:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-12 18:28:29,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2020-10-12 18:28:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-12 18:28:29,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 202 transitions. [2020-10-12 18:28:29,514 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 202 transitions. Word has length 104 [2020-10-12 18:28:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:29,515 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 202 transitions. [2020-10-12 18:28:29,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:28:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 202 transitions. [2020-10-12 18:28:29,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 18:28:29,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:29,517 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 19, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:29,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:28:29,518 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:29,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1470577800, now seen corresponding path program 3 times [2020-10-12 18:28:29,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:29,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077058493] [2020-10-12 18:28:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:34,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:34,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 18:28:34,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 18:28:34,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:34,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:28:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:34,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:34,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:34,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:34,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:34,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:34,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:34,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:34,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:34,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:34,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:34,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:34,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:34,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:34,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-12 18:28:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:28:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:34,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 18:28:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:34,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:34,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:34,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:34,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:34,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 18:28:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:28:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:34,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:28:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:34,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:34,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:35,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:28:35,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:35,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 18:28:35,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:28:35,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:35,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:28:35,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 273 proven. 546 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 18:28:35,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077058493] [2020-10-12 18:28:35,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:35,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:28:35,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378030860] [2020-10-12 18:28:35,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:28:35,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:35,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:28:35,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:28:35,057 INFO L87 Difference]: Start difference. First operand 158 states and 202 transitions. Second operand 11 states. [2020-10-12 18:28:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:35,391 INFO L93 Difference]: Finished difference Result 340 states and 452 transitions. [2020-10-12 18:28:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:28:35,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-10-12 18:28:35,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:35,397 INFO L225 Difference]: With dead ends: 340 [2020-10-12 18:28:35,397 INFO L226 Difference]: Without dead ends: 191 [2020-10-12 18:28:35,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:28:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-12 18:28:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 174. [2020-10-12 18:28:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-12 18:28:35,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 222 transitions. [2020-10-12 18:28:35,433 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 222 transitions. Word has length 116 [2020-10-12 18:28:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:35,434 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 222 transitions. [2020-10-12 18:28:35,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:28:35,434 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 222 transitions. [2020-10-12 18:28:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 18:28:35,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:35,436 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 22, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:35,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:28:35,437 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:35,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:35,441 INFO L82 PathProgramCache]: Analyzing trace with hash 800369059, now seen corresponding path program 4 times [2020-10-12 18:28:35,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:35,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133324245] [2020-10-12 18:28:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:35,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:40,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:40,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 18:28:40,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:40,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:28:40,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:40,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:28:40,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:40,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:40,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:40,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:40,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:40,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:40,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:40,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:40,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:40,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:40,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:40,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:40,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:40,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:40,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:40,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:40,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:40,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 18:28:40,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:28:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:40,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 18:28:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:40,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:40,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:40,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:40,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:40,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-12 18:28:40,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:28:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:40,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 18:28:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:40,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:40,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:40,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:40,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:28:40,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:40,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 18:28:40,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:40,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:28:40,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:40,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:28:40,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 360 proven. 720 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 18:28:40,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133324245] [2020-10-12 18:28:40,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:40,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:28:40,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911222447] [2020-10-12 18:28:40,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:28:40,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:40,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:28:40,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:28:40,876 INFO L87 Difference]: Start difference. First operand 174 states and 222 transitions. Second operand 12 states. [2020-10-12 18:28:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:41,329 INFO L93 Difference]: Finished difference Result 372 states and 492 transitions. [2020-10-12 18:28:41,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:28:41,330 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-10-12 18:28:41,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:41,333 INFO L225 Difference]: With dead ends: 372 [2020-10-12 18:28:41,333 INFO L226 Difference]: Without dead ends: 207 [2020-10-12 18:28:41,336 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 18:28:41,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-12 18:28:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 190. [2020-10-12 18:28:41,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-12 18:28:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 242 transitions. [2020-10-12 18:28:41,372 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 242 transitions. Word has length 128 [2020-10-12 18:28:41,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:41,372 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 242 transitions. [2020-10-12 18:28:41,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:28:41,373 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 242 transitions. [2020-10-12 18:28:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 18:28:41,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:41,377 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 25, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:41,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:28:41,378 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:41,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:41,378 INFO L82 PathProgramCache]: Analyzing trace with hash 617170494, now seen corresponding path program 5 times [2020-10-12 18:28:41,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:41,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317047494] [2020-10-12 18:28:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:41,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 18:28:46,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:46,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:28:46,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:28:46,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:46,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:46,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:46,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:46,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:46,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:46,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:46,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:46,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:46,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 18:28:46,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:28:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:46,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:46,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:28:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:28:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:46,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:46,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:46,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:46,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-12 18:28:46,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:28:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:47,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:28:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:47,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:47,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:47,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:28:47,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-12 18:28:47,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:28:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:47,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:28:47,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 459 proven. 918 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 18:28:47,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317047494] [2020-10-12 18:28:47,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:47,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:28:47,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448379498] [2020-10-12 18:28:47,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:28:47,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:47,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:28:47,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:28:47,201 INFO L87 Difference]: Start difference. First operand 190 states and 242 transitions. Second operand 13 states. [2020-10-12 18:28:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:47,685 INFO L93 Difference]: Finished difference Result 404 states and 532 transitions. [2020-10-12 18:28:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:28:47,687 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 140 [2020-10-12 18:28:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:47,689 INFO L225 Difference]: With dead ends: 404 [2020-10-12 18:28:47,689 INFO L226 Difference]: Without dead ends: 223 [2020-10-12 18:28:47,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:28:47,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-12 18:28:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 206. [2020-10-12 18:28:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-12 18:28:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 262 transitions. [2020-10-12 18:28:47,718 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 262 transitions. Word has length 140 [2020-10-12 18:28:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:47,718 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 262 transitions. [2020-10-12 18:28:47,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:28:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 262 transitions. [2020-10-12 18:28:47,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 18:28:47,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:47,723 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 28, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:47,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:28:47,724 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:47,725 INFO L82 PathProgramCache]: Analyzing trace with hash -217787815, now seen corresponding path program 6 times [2020-10-12 18:28:47,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:47,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618536880] [2020-10-12 18:28:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:47,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:52,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:52,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 18:28:52,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:52,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:28:52,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:52,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:28:52,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:52,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:28:52,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:52,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:52,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:52,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:52,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:52,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:52,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:52,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:52,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:52,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:52,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:52,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:52,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-12 18:28:52,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:28:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:52,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:28:52,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:53,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:28:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:53,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:53,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:53,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 18:28:53,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:28:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:53,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:28:53,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:53,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 18:28:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:53,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:53,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:28:53,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:53,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-12 18:28:53,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:28:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:28:53,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:53,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1845 backedges. 570 proven. 1140 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 18:28:53,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618536880] [2020-10-12 18:28:53,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:53,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:28:53,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444079445] [2020-10-12 18:28:53,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:28:53,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:53,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:28:53,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:28:53,315 INFO L87 Difference]: Start difference. First operand 206 states and 262 transitions. Second operand 14 states. [2020-10-12 18:28:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:28:53,769 INFO L93 Difference]: Finished difference Result 436 states and 572 transitions. [2020-10-12 18:28:53,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:28:53,773 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-10-12 18:28:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:28:53,777 INFO L225 Difference]: With dead ends: 436 [2020-10-12 18:28:53,777 INFO L226 Difference]: Without dead ends: 239 [2020-10-12 18:28:53,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:28:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-12 18:28:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 222. [2020-10-12 18:28:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-12 18:28:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 282 transitions. [2020-10-12 18:28:53,801 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 282 transitions. Word has length 152 [2020-10-12 18:28:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:28:53,801 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 282 transitions. [2020-10-12 18:28:53,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:28:53,802 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 282 transitions. [2020-10-12 18:28:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 18:28:53,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:28:53,805 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 31, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:28:53,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:28:53,806 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:28:53,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:28:53,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1550257652, now seen corresponding path program 7 times [2020-10-12 18:28:53,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:28:53,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629439678] [2020-10-12 18:28:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:28:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:53,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:53,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:58,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 18:28:58,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:28:58,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 18:28:58,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:58,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:28:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:28:58,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:28:58,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:58,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:28:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:58,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:58,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:28:58,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:28:58,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:28:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:28:58,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:28:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:58,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:28:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:58,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:58,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:58,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:28:58,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:28:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 18:28:58,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:28:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:58,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:28:58,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:59,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:28:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:59,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:59,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:59,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:28:59,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:59,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-12 18:28:59,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:28:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:59,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:28:59,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:59,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 18:28:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:28:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:28:59,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:28:59,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:28:59,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:28:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 18:28:59,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:28:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:28:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:28:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:28:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:28:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2226 backedges. 693 proven. 1386 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 18:28:59,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629439678] [2020-10-12 18:28:59,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:28:59,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:28:59,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006731006] [2020-10-12 18:28:59,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:28:59,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:28:59,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:28:59,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:28:59,543 INFO L87 Difference]: Start difference. First operand 222 states and 282 transitions. Second operand 15 states. [2020-10-12 18:29:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:29:00,080 INFO L93 Difference]: Finished difference Result 468 states and 612 transitions. [2020-10-12 18:29:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:29:00,081 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 164 [2020-10-12 18:29:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:29:00,083 INFO L225 Difference]: With dead ends: 468 [2020-10-12 18:29:00,083 INFO L226 Difference]: Without dead ends: 255 [2020-10-12 18:29:00,086 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 18:29:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-12 18:29:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 238. [2020-10-12 18:29:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-12 18:29:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 302 transitions. [2020-10-12 18:29:00,116 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 302 transitions. Word has length 164 [2020-10-12 18:29:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:29:00,116 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 302 transitions. [2020-10-12 18:29:00,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:29:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 302 transitions. [2020-10-12 18:29:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 18:29:00,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:29:00,121 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 34, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:29:00,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:29:00,121 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:29:00,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:29:00,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1731217137, now seen corresponding path program 8 times [2020-10-12 18:29:00,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:29:00,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442859005] [2020-10-12 18:29:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:29:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:00,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:00,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:04,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:05,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:05,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:29:05,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:29:05,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:29:05,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-12 18:29:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:29:05,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-12 18:29:05,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:05,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:29:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:05,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:05,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:05,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:29:05,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:29:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:29:05,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:29:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:29:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:05,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:29:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:05,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:05,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:06,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:06,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:06,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-12 18:29:06,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-12 18:29:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:29:06,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:29:06,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:08,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:29:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:08,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:08,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:29:08,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-12 18:29:08,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:29:08,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 18:29:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:10,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 18:29:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:29:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:29:10,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:29:10,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:29:10,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:29:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 18:29:10,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:29:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:29:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:29:10,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:29:10,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:29:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2643 backedges. 494 proven. 2141 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 18:29:12,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442859005] [2020-10-12 18:29:12,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:29:12,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-12 18:29:12,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965658139] [2020-10-12 18:29:12,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-12 18:29:12,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:29:12,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-12 18:29:12,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1129, Invalid=4273, Unknown=0, NotChecked=0, Total=5402 [2020-10-12 18:29:12,122 INFO L87 Difference]: Start difference. First operand 238 states and 302 transitions. Second operand 74 states. [2020-10-12 18:29:23,033 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-12 18:29:24,019 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2020-10-12 18:29:24,242 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-12 18:29:24,495 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-12 18:29:24,924 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-12 18:29:25,185 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2020-10-12 18:29:25,461 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-12 18:29:25,758 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-12 18:29:26,105 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2020-10-12 18:29:26,493 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 90 [2020-10-12 18:29:26,951 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 105 [2020-10-12 18:29:27,528 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-12 18:29:27,988 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 102 [2020-10-12 18:29:28,664 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-12 18:29:29,162 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2020-10-12 18:29:29,817 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 112 [2020-10-12 18:29:30,397 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-10-12 18:29:30,958 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2020-10-12 18:29:31,300 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-12 18:29:31,582 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-12 18:29:32,070 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-12 18:29:32,333 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-12 18:29:32,585 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-12 18:29:34,387 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 111 [2020-10-12 18:29:34,839 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-10-12 18:29:35,216 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-12 18:29:35,535 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 18:29:44,323 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 18:29:49,504 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-12 18:29:49,753 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-12 18:29:50,535 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-12 18:29:50,795 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-12 18:29:51,095 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-12 18:29:51,604 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-12 18:29:52,229 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-12 18:29:52,541 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-12 18:29:52,894 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-12 18:29:53,173 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-12 18:29:53,505 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-12 18:29:53,887 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-12 18:29:54,337 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-12 18:29:54,828 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-10-12 18:29:55,500 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 116 [2020-10-12 18:29:56,484 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2020-10-12 18:29:57,210 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 120 [2020-10-12 18:29:58,096 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2020-10-12 18:29:58,882 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 108 [2020-10-12 18:29:59,631 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2020-10-12 18:30:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:00,833 INFO L93 Difference]: Finished difference Result 1294 states and 1757 transitions. [2020-10-12 18:30:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2020-10-12 18:30:00,835 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 176 [2020-10-12 18:30:00,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:00,843 INFO L225 Difference]: With dead ends: 1294 [2020-10-12 18:30:00,843 INFO L226 Difference]: Without dead ends: 986 [2020-10-12 18:30:00,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40630 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=17606, Invalid=88996, Unknown=0, NotChecked=0, Total=106602 [2020-10-12 18:30:00,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2020-10-12 18:30:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 658. [2020-10-12 18:30:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-12 18:30:00,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 889 transitions. [2020-10-12 18:30:00,925 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 889 transitions. Word has length 176 [2020-10-12 18:30:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:00,926 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 889 transitions. [2020-10-12 18:30:00,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-12 18:30:00,926 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 889 transitions. [2020-10-12 18:30:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 18:30:00,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:00,935 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 36, 3, 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 18:30:00,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:30:00,936 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:00,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:00,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1185912296, now seen corresponding path program 9 times [2020-10-12 18:30:00,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:00,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670657629] [2020-10-12 18:30:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:00,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:01,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:05,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:05,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 18:30:05,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 18:30:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-12 18:30:05,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-12 18:30:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:30:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-12 18:30:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:06,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:06,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:06,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:06,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:30:06,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:06,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:06,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:06,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:06,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:07,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:07,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:30:07,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:07,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1392 [2020-10-12 18:30:07,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:30:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:07,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:30:07,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:09,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:30:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:09,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:09,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:09,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:30:09,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:09,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-12 18:30:09,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:30:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:09,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:30:09,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:11,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 18:30:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:11,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:12,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:12,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:30:12,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-12 18:30:12,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:30:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:12,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:30:12,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:14,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3096 backedges. 61 proven. 2996 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 18:30:14,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670657629] [2020-10-12 18:30:14,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:14,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-12 18:30:14,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214507598] [2020-10-12 18:30:14,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-12 18:30:14,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:14,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-12 18:30:14,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=4406, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 18:30:14,111 INFO L87 Difference]: Start difference. First operand 658 states and 889 transitions. Second operand 69 states. [2020-10-12 18:30:15,885 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-12 18:30:17,815 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-10-12 18:30:19,488 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-12 18:30:20,179 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-12 18:30:22,183 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-12 18:30:23,053 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 18:30:25,477 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 18:30:26,488 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-12 18:30:29,389 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-12 18:30:30,644 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-12 18:30:34,163 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-12 18:30:35,620 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-12 18:30:39,662 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-12 18:30:39,959 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-12 18:30:41,347 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-12 18:30:44,703 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 18:30:45,762 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-12 18:30:47,637 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-12 18:30:48,930 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-12 18:30:51,760 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-12 18:30:52,984 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-12 18:30:55,141 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-12 18:30:56,551 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-12 18:30:59,757 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-12 18:31:01,120 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-12 18:31:03,558 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-12 18:31:05,087 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-12 18:31:07,989 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-12 18:31:08,411 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-12 18:31:08,909 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-12 18:31:09,432 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-12 18:31:11,618 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-12 18:31:12,031 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-12 18:31:12,531 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-12 18:31:13,062 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-12 18:31:14,478 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-12 18:31:14,746 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-12 18:31:15,020 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-12 18:31:15,313 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-10-12 18:31:15,619 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-12 18:31:15,946 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-12 18:31:16,338 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-12 18:31:16,808 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-12 18:31:17,368 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-12 18:31:17,806 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-12 18:31:18,237 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-10-12 18:31:19,936 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-10-12 18:31:20,183 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-12 18:31:20,445 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-12 18:31:20,689 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-12 18:31:20,978 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-12 18:31:22,556 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-12 18:31:22,862 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-12 18:31:23,185 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 18:31:23,524 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-12 18:31:23,875 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 18:31:24,242 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-10-12 18:31:24,670 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77