/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/max60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:09:31,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:09:31,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:09:31,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:09:31,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:09:31,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:09:31,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:09:31,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:09:31,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:09:31,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:09:31,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:09:31,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:09:31,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:09:31,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:09:31,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:09:31,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:09:31,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:09:31,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:09:31,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:09:31,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:09:31,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:09:31,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:09:31,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:09:31,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:09:31,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:09:31,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:09:31,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:09:31,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:09:31,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:09:31,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:09:31,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:09:31,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:09:31,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:09:31,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:09:31,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:09:31,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:09:31,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:09:31,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:09:31,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:09:31,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:09:31,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:09:31,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:09:31,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:09:31,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:09:31,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:09:31,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:09:31,566 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:09:31,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:09:31,567 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:09:31,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:09:31,567 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:09:31,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:09:31,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:09:31,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:09:31,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:09:31,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:09:31,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:09:31,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:09:31,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:09:31,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:09:31,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:09:31,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:09:31,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:09:31,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:09:31,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:09:31,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:09:31,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:09:31,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:09:31,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:09:31,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:09:31,571 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:09:31,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:09:31,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:09:31,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:09:31,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:09:31,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:09:31,904 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:09:31,904 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max60-2.i [2020-10-13 13:09:31,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e4706d3/9e934aa71e7a4a27a0ed368783f8380b/FLAGc73eb1b01 [2020-10-13 13:09:32,396 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:09:32,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/max60-2.i [2020-10-13 13:09:32,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e4706d3/9e934aa71e7a4a27a0ed368783f8380b/FLAGc73eb1b01 [2020-10-13 13:09:32,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63e4706d3/9e934aa71e7a4a27a0ed368783f8380b [2020-10-13 13:09:32,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:09:32,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:09:32,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:09:32,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:09:32,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:09:32,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:09:32" (1/1) ... [2020-10-13 13:09:32,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256ae262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:32, skipping insertion in model container [2020-10-13 13:09:32,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:09:32" (1/1) ... [2020-10-13 13:09:32,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:09:32,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:09:33,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:09:33,142 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:09:33,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:09:33,204 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:09:33,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33 WrapperNode [2020-10-13 13:09:33,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:09:33,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:09:33,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:09:33,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:09:33,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (1/1) ... [2020-10-13 13:09:33,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (1/1) ... [2020-10-13 13:09:33,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (1/1) ... [2020-10-13 13:09:33,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (1/1) ... [2020-10-13 13:09:33,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (1/1) ... [2020-10-13 13:09:33,324 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (1/1) ... [2020-10-13 13:09:33,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (1/1) ... [2020-10-13 13:09:33,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:09:33,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:09:33,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:09:33,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:09:33,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:09:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:09:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:09:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2020-10-13 13:09:33,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:09:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:09:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 13:09:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure max [2020-10-13 13:09:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 13:09:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:09:33,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 13:09:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 13:09:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 13:09:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:09:33,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:09:33,672 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:09:33,673 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 13:09:33,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:09:33 BoogieIcfgContainer [2020-10-13 13:09:33,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:09:33,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:09:33,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:09:33,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:09:33,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:09:32" (1/3) ... [2020-10-13 13:09:33,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b60b4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:09:33, skipping insertion in model container [2020-10-13 13:09:33,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:09:33" (2/3) ... [2020-10-13 13:09:33,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b60b4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:09:33, skipping insertion in model container [2020-10-13 13:09:33,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:09:33" (3/3) ... [2020-10-13 13:09:33,687 INFO L109 eAbstractionObserver]: Analyzing ICFG max60-2.i [2020-10-13 13:09:33,709 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:09:33,733 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:09:33,768 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:09:33,813 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:09:33,813 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:09:33,814 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:09:33,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:09:33,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:09:33,814 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:09:33,814 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:09:33,815 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:09:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-13 13:09:33,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:09:33,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:33,839 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] [2020-10-13 13:09:33,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:33,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2020-10-13 13:09:33,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:33,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [701022588] [2020-10-13 13:09:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:34,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:34,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:35,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:09:35,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:09:35,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1100 [2020-10-13 13:09:35,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:09:35,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:35,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:09:35,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:35,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:35,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:35,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:35,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:09:35,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:35,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:35,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:35,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:09:35,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:09:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:35,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:09:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:09:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:09:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:35,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:09:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:35,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:35,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:09:35,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:35,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:09:35,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:35,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:09:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:35,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:35,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:35,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:09:35,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:09:35,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:35,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:09:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 13:09:35,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [701022588] [2020-10-13 13:09:35,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:35,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-13 13:09:35,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243599636] [2020-10-13 13:09:35,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 13:09:35,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:35,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 13:09:35,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:09:35,306 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-13 13:09:35,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:35,444 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2020-10-13 13:09:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 13:09:35,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 13:09:35,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:35,462 INFO L225 Difference]: With dead ends: 58 [2020-10-13 13:09:35,463 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 13:09:35,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 13:09:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 13:09:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-13 13:09:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 13:09:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-13 13:09:35,531 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 32 [2020-10-13 13:09:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:35,532 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-13 13:09:35,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 13:09:35,533 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-13 13:09:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 13:09:35,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:35,549 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] [2020-10-13 13:09:35,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:09:35,552 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:35,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:35,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1771965707, now seen corresponding path program 1 times [2020-10-13 13:09:35,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:35,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958117184] [2020-10-13 13:09:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:35,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:35,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:36,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:36,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:36,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 13:09:36,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:09:36,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1343 [2020-10-13 13:09:36,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:36,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:09:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 13:09:36,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:09:36,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 13:09:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:36,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:36,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:36,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:36,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:36,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:09:36,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:36,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:36,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:36,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:36,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:09:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:36,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:36,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:36,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:09:36,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:09:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 13:09:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:37,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:37,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:09:37,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:37,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:09:37,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:09:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:09:37,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:09:37,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:37,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:09:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:37,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:37,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:09:37,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:37,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:09:37,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:09:37,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 13:09:37,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958117184] [2020-10-13 13:09:37,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:37,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 13:09:37,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97098475] [2020-10-13 13:09:37,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:09:37,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:37,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:09:37,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:09:37,067 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2020-10-13 13:09:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:37,197 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-10-13 13:09:37,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:09:37,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 13:09:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:37,200 INFO L225 Difference]: With dead ends: 51 [2020-10-13 13:09:37,200 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:09:37,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:09:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-13 13:09:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 13:09:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-13 13:09:37,218 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2020-10-13 13:09:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:37,219 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-13 13:09:37,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:09:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-13 13:09:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 13:09:37,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:37,222 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-13 13:09:37,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:09:37,223 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:37,224 INFO L82 PathProgramCache]: Analyzing trace with hash -2021843290, now seen corresponding path program 1 times [2020-10-13 13:09:37,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:37,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810927845] [2020-10-13 13:09:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:37,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:37,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 13:09:39,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:39,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2705 [2020-10-13 13:09:39,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:09:39,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:09:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:39,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:39,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:39,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:39,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:39,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:09:39,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:39,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:39,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:39,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 13:09:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:39,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:40,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:09:40,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:40,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:40,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 13:09:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:09:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:09:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:40,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:09:40,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:40,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:40,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-10-13 13:09:40,110 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-13 13:09:40,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810927845] [2020-10-13 13:09:40,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:09:40,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:09:40,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335672789] [2020-10-13 13:09:40,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:09:40,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:40,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:09:40,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:09:40,117 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 4 states. [2020-10-13 13:09:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:40,251 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-10-13 13:09:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:09:40,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-13 13:09:40,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:40,253 INFO L225 Difference]: With dead ends: 52 [2020-10-13 13:09:40,255 INFO L226 Difference]: Without dead ends: 31 [2020-10-13 13:09:40,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:09:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-13 13:09:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-13 13:09:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 13:09:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-13 13:09:40,269 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 44 [2020-10-13 13:09:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:40,270 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-13 13:09:40,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:09:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-13 13:09:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 13:09:40,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:40,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1] [2020-10-13 13:09:40,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:09:40,274 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:40,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:40,276 INFO L82 PathProgramCache]: Analyzing trace with hash 727331048, now seen corresponding path program 1 times [2020-10-13 13:09:40,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:40,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081655470] [2020-10-13 13:09:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:40,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 13:09:44,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:44,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4317 [2020-10-13 13:09:44,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:09:44,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:09:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:09:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:44,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:44,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:44,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:44,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:44,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:09:44,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:09:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:44,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:09:44,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:44,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:09:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:44,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:44,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:09:44,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:44,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:44,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:44,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:09:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:44,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:44,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:09:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 13:09:44,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081655470] [2020-10-13 13:09:44,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:09:44,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:09:44,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328238806] [2020-10-13 13:09:44,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:09:44,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:44,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:09:44,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:09:44,752 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-13 13:09:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:44,861 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-10-13 13:09:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:09:44,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-13 13:09:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:44,863 INFO L225 Difference]: With dead ends: 47 [2020-10-13 13:09:44,863 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 13:09:44,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:09:44,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 13:09:44,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 13:09:44,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 13:09:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-13 13:09:44,874 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2020-10-13 13:09:44,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:44,876 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-13 13:09:44,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:09:44,877 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-13 13:09:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 13:09:44,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:44,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2020-10-13 13:09:44,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:09:44,878 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:44,879 INFO L82 PathProgramCache]: Analyzing trace with hash -270429754, now seen corresponding path program 1 times [2020-10-13 13:09:44,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:44,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441873301] [2020-10-13 13:09:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:44,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:44,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 13:09:49,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:09:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:09:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:09:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:49,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:09:49,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:49,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 13:09:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:49,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:49,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:09:49,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:49,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 13:09:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:49,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:49,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:49,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:09:49,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:49,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:09:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:49,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:50,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:50,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:09:50,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:50,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:50,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 13:09:50,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441873301] [2020-10-13 13:09:50,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:50,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:09:50,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435264261] [2020-10-13 13:09:50,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:09:50,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:50,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:09:50,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:50,021 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 5 states. [2020-10-13 13:09:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:50,138 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2020-10-13 13:09:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:09:50,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2020-10-13 13:09:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:50,140 INFO L225 Difference]: With dead ends: 56 [2020-10-13 13:09:50,140 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 13:09:50,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:50,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 13:09:50,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 13:09:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 13:09:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-10-13 13:09:50,151 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 48 [2020-10-13 13:09:50,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:50,151 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-10-13 13:09:50,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:09:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-10-13 13:09:50,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 13:09:50,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:50,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:50,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:09:50,153 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:50,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:50,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1585951496, now seen corresponding path program 2 times [2020-10-13 13:09:50,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:50,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307293844] [2020-10-13 13:09:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:50,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:50,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:50,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 13:09:55,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:09:55,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:09:55,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:09:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 13:09:55,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 13:09:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:09:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:09:55,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:09:55,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:09:55,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:55,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:55,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:55,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:09:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:55,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:55,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 13:09:55,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:55,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:55,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:55,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:09:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:55,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:09:55,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:09:55,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:09:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 13:09:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:09:55,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:09:55,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:09:55,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:09:55,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:09:55,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:09:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:09:55,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:09:55,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:09:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 13:09:55,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307293844] [2020-10-13 13:09:55,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:09:55,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:09:55,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300417432] [2020-10-13 13:09:55,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:09:55,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:09:55,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:09:55,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:55,290 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 5 states. [2020-10-13 13:09:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:09:55,379 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-10-13 13:09:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:09:55,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-10-13 13:09:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:09:55,380 INFO L225 Difference]: With dead ends: 51 [2020-10-13 13:09:55,381 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 13:09:55,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:09:55,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 13:09:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 13:09:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 13:09:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-13 13:09:55,393 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 50 [2020-10-13 13:09:55,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:09:55,393 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-13 13:09:55,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:09:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-13 13:09:55,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 13:09:55,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:09:55,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:09:55,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:09:55,396 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:09:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:09:55,396 INFO L82 PathProgramCache]: Analyzing trace with hash 230099942, now seen corresponding path program 3 times [2020-10-13 13:09:55,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:09:55,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711432147] [2020-10-13 13:09:55,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:09:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:09:55,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:09:55,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 13:10:00,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:00,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:10:00,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:10:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 13:10:00,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:10:00,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:00,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:00,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:00,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:00,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:00,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:00,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:00,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:10:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:10:00,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:10:00,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 13:10:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:10:00,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:00,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:10:00,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:10:00,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:00,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:10:00,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:00,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:10:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:00,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 13:10:00,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:00,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:10:00,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 13:10:00,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711432147] [2020-10-13 13:10:00,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:00,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 13:10:00,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217407029] [2020-10-13 13:10:00,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:10:00,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:00,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:10:00,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:10:00,565 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 5 states. [2020-10-13 13:10:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:00,709 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2020-10-13 13:10:00,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:10:00,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-10-13 13:10:00,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:00,711 INFO L225 Difference]: With dead ends: 65 [2020-10-13 13:10:00,711 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:10:00,712 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 [2020-10-13 13:10:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:10:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-10-13 13:10:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 13:10:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-13 13:10:00,728 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 52 [2020-10-13 13:10:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:00,728 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-13 13:10:00,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:10:00,729 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-13 13:10:00,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 13:10:00,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:00,731 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:00,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:10:00,734 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:00,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:00,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1007027967, now seen corresponding path program 4 times [2020-10-13 13:10:00,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:00,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892745374] [2020-10-13 13:10:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:00,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:00,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 13:10:05,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:10:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:10:05,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:10:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 13:10:05,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:10:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:05,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:05,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:05,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:10:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:05,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:10:05,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:10:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:05,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:05,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:10:05,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:05,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:05,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 13:10:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:05,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:05,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:05,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:05,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:10:05,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:05,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-13 13:10:05,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892745374] [2020-10-13 13:10:05,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:05,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:10:05,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423508556] [2020-10-13 13:10:05,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:10:05,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:05,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:10:05,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:10:05,900 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 6 states. [2020-10-13 13:10:05,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:05,995 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-10-13 13:10:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:10:05,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-13 13:10:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:05,998 INFO L225 Difference]: With dead ends: 61 [2020-10-13 13:10:05,998 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 13:10:05,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:10:06,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 13:10:06,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 13:10:06,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 13:10:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-10-13 13:10:06,010 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 64 [2020-10-13 13:10:06,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:06,012 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-10-13 13:10:06,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:10:06,013 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-10-13 13:10:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 13:10:06,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:06,014 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:06,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:10:06,015 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:06,017 INFO L82 PathProgramCache]: Analyzing trace with hash 142498655, now seen corresponding path program 5 times [2020-10-13 13:10:06,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:06,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551035111] [2020-10-13 13:10:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:06,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:06,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:10,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:10,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 13:10:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:10:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:10:11,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:10:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:10:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:11,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:11,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:11,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 13:10:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:11,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:11,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:10:11,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 13:10:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:11,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:11,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:10:11,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:11,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 13:10:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:11,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:11,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:11,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:10:11,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:11,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:11,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:11,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-13 13:10:11,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551035111] [2020-10-13 13:10:11,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:11,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:10:11,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087821908] [2020-10-13 13:10:11,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:10:11,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:11,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:10:11,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:10:11,163 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 6 states. [2020-10-13 13:10:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:11,252 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2020-10-13 13:10:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:10:11,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 13:10:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:11,253 INFO L225 Difference]: With dead ends: 74 [2020-10-13 13:10:11,253 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 13:10:11,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:10:11,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 13:10:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 13:10:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 13:10:11,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2020-10-13 13:10:11,260 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 66 [2020-10-13 13:10:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:11,260 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2020-10-13 13:10:11,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:10:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2020-10-13 13:10:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 13:10:11,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:11,262 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 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] [2020-10-13 13:10:11,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:10:11,262 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:11,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1445687329, now seen corresponding path program 6 times [2020-10-13 13:10:11,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:11,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209066891] [2020-10-13 13:10:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:11,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:11,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:14,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 13:10:16,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:10:16,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:10:16,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:10:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:10:16,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:10:16,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:16,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:10:16,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:16,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:16,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:10:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:16,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:16,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:10:16,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:10:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:16,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:16,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:10:16,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:16,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:16,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 13:10:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:16,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:16,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:16,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:10:16,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:16,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-13 13:10:16,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209066891] [2020-10-13 13:10:16,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:16,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:10:16,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836625047] [2020-10-13 13:10:16,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:10:16,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:16,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:10:16,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:10:16,427 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 7 states. [2020-10-13 13:10:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:16,523 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-10-13 13:10:16,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:10:16,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 68 [2020-10-13 13:10:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:16,524 INFO L225 Difference]: With dead ends: 65 [2020-10-13 13:10:16,524 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 13:10:16,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:10:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 13:10:16,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 13:10:16,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 13:10:16,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-13 13:10:16,530 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 68 [2020-10-13 13:10:16,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:16,530 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-13 13:10:16,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:10:16,530 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-13 13:10:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 13:10:16,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:16,532 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 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] [2020-10-13 13:10:16,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:10:16,532 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:16,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:16,533 INFO L82 PathProgramCache]: Analyzing trace with hash -735147393, now seen corresponding path program 7 times [2020-10-13 13:10:16,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:16,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758927702] [2020-10-13 13:10:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:16,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:17,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 13:10:21,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:10:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 13:10:21,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:10:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:21,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 13:10:21,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:21,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:21,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 13:10:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:21,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 13:10:21,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:21,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 13:10:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:21,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:10:21,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 13:10:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:21,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:21,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:21,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:10:21,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:21,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:21,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:21,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:21,662 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-13 13:10:21,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758927702] [2020-10-13 13:10:21,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:21,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:10:21,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805095382] [2020-10-13 13:10:21,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:10:21,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:21,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:10:21,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:10:21,664 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2020-10-13 13:10:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:21,775 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2020-10-13 13:10:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:10:21,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-10-13 13:10:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:21,777 INFO L225 Difference]: With dead ends: 80 [2020-10-13 13:10:21,777 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 13:10:21,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:10:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 13:10:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 13:10:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 13:10:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-10-13 13:10:21,782 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 70 [2020-10-13 13:10:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:21,782 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-10-13 13:10:21,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:10:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-10-13 13:10:21,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 13:10:21,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:21,783 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:21,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:10:21,784 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:21,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:21,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1478529471, now seen corresponding path program 8 times [2020-10-13 13:10:21,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:21,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423056370] [2020-10-13 13:10:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:21,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:23,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:23,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:26,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:26,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 13:10:26,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:10:26,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:10:26,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:26,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:10:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 13:10:26,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:10:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:26,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:26,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:26,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:26,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:26,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:26,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:26,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:26,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:26,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:26,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:26,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:10:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:26,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:26,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:26,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:26,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:10:26,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:26,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:26,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 13:10:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:26,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:26,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:26,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:26,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:26,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:10:26,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:10:26,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:26,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:10:26,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 13:10:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:26,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:26,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 13:10:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:10:26,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:26,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 13:10:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-13 13:10:26,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423056370] [2020-10-13 13:10:26,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:26,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 13:10:26,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261578492] [2020-10-13 13:10:26,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:10:26,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:10:26,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:10:26,908 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 6 states. [2020-10-13 13:10:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:27,055 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2020-10-13 13:10:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:10:27,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-13 13:10:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:27,058 INFO L225 Difference]: With dead ends: 85 [2020-10-13 13:10:27,058 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 13:10:27,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:27,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 13:10:27,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-13 13:10:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 13:10:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-10-13 13:10:27,068 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 72 [2020-10-13 13:10:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:27,069 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-10-13 13:10:27,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:10:27,069 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-10-13 13:10:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 13:10:27,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:27,070 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:27,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:10:27,074 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:27,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:27,075 INFO L82 PathProgramCache]: Analyzing trace with hash 517011164, now seen corresponding path program 9 times [2020-10-13 13:10:27,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:27,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403701446] [2020-10-13 13:10:27,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-13 13:10:32,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:32,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:10:32,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:10:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:32,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:10:32,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:32,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:32,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:10:32,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:32,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 13:10:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:32,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:32,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:10:32,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:32,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:32,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 13:10:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:32,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:10:32,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 13:10:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:32,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:32,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:32,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:10:32,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:32,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-13 13:10:32,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403701446] [2020-10-13 13:10:32,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:32,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:10:32,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508674988] [2020-10-13 13:10:32,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:10:32,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:32,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:10:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:10:32,256 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 8 states. [2020-10-13 13:10:32,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:32,358 INFO L93 Difference]: Finished difference Result 90 states and 104 transitions. [2020-10-13 13:10:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:10:32,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-10-13 13:10:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:32,359 INFO L225 Difference]: With dead ends: 90 [2020-10-13 13:10:32,360 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 13:10:32,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:10:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 13:10:32,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 13:10:32,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 13:10:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-13 13:10:32,367 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 84 [2020-10-13 13:10:32,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:32,368 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-13 13:10:32,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:10:32,368 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-13 13:10:32,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 13:10:32,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:32,369 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:32,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:10:32,369 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:32,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:32,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1711218462, now seen corresponding path program 10 times [2020-10-13 13:10:32,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:32,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147738582] [2020-10-13 13:10:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:32,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 13:10:37,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:10:37,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:10:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 13:10:37,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:10:37,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:37,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:37,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:37,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:37,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:37,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:10:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:37,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:37,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:10:37,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:37,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:37,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:10:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:37,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:37,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:10:37,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:37,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:37,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 13:10:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:37,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:37,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 13:10:37,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:37,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:37,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 13:10:37,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147738582] [2020-10-13 13:10:37,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:37,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:10:37,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589664305] [2020-10-13 13:10:37,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:10:37,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:37,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:10:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:10:37,550 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 8 states. [2020-10-13 13:10:37,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:37,671 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-10-13 13:10:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:10:37,672 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-13 13:10:37,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:37,673 INFO L225 Difference]: With dead ends: 79 [2020-10-13 13:10:37,673 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 13:10:37,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:10:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 13:10:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 13:10:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 13:10:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-10-13 13:10:37,680 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 86 [2020-10-13 13:10:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:37,681 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-10-13 13:10:37,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:10:37,681 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-10-13 13:10:37,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 13:10:37,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:37,682 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:37,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:10:37,682 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:37,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:37,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1395208700, now seen corresponding path program 11 times [2020-10-13 13:10:37,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:37,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111325764] [2020-10-13 13:10:37,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:37,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:42,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 13:10:42,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:10:42,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:10:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-13 13:10:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:10:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:42,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:42,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:42,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:42,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:42,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:42,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:42,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:10:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:42,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:42,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:42,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:10:42,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:42,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:42,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:10:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:42,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:42,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:42,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:42,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:10:42,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:42,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:42,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:42,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 13:10:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:42,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:42,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:42,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:10:42,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 13:10:42,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111325764] [2020-10-13 13:10:42,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:42,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:10:42,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661677715] [2020-10-13 13:10:42,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:10:42,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:42,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:10:42,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:42,935 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 9 states. [2020-10-13 13:10:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:43,072 INFO L93 Difference]: Finished difference Result 81 states and 92 transitions. [2020-10-13 13:10:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:10:43,072 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-13 13:10:43,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:43,073 INFO L225 Difference]: With dead ends: 81 [2020-10-13 13:10:43,074 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 13:10:43,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:43,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 13:10:43,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 13:10:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 13:10:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-13 13:10:43,093 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 88 [2020-10-13 13:10:43,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:43,094 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-13 13:10:43,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:10:43,094 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-13 13:10:43,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-13 13:10:43,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:43,098 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 6, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:10:43,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:10:43,099 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:43,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:43,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1642461862, now seen corresponding path program 12 times [2020-10-13 13:10:43,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:43,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798887780] [2020-10-13 13:10:43,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:43,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:44,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-13 13:10:48,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:10:48,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:10:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:10:48,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:10:48,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:48,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:48,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:48,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:48,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 13:10:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:48,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:48,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:10:48,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:48,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:48,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 13:10:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:48,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:10:48,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:48,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 13:10:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:48,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:48,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:48,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:10:48,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:48,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-13 13:10:48,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798887780] [2020-10-13 13:10:48,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:48,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:10:48,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057733974] [2020-10-13 13:10:48,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:10:48,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:48,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:10:48,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:48,338 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 9 states. [2020-10-13 13:10:48,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:48,473 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-10-13 13:10:48,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:10:48,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-13 13:10:48,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:48,475 INFO L225 Difference]: With dead ends: 100 [2020-10-13 13:10:48,475 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 13:10:48,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:10:48,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 13:10:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 13:10:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 13:10:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-13 13:10:48,481 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 90 [2020-10-13 13:10:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:48,482 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-13 13:10:48,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:10:48,482 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-13 13:10:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 13:10:48,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:48,483 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 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] [2020-10-13 13:10:48,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:10:48,483 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash -412781540, now seen corresponding path program 13 times [2020-10-13 13:10:48,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:48,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114092198] [2020-10-13 13:10:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:48,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:53,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:10:53,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:10:53,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:10:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 13:10:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:10:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:53,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:53,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:53,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:53,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:53,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:53,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:53,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:53,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:53,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:10:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:53,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:53,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:53,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:53,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:10:53,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:53,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:53,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:53,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:53,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 13:10:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:53,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:10:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:10:53,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:10:53,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:53,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 13:10:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:53,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:53,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 13:10:53,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 13:10:53,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:10:53,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:53,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 46 proven. 61 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-10-13 13:10:53,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114092198] [2020-10-13 13:10:53,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:53,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 13:10:53,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725183334] [2020-10-13 13:10:53,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:10:53,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:53,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:10:53,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:10:53,697 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 7 states. [2020-10-13 13:10:53,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:53,886 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2020-10-13 13:10:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:10:53,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-13 13:10:53,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:53,887 INFO L225 Difference]: With dead ends: 105 [2020-10-13 13:10:53,887 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 13:10:53,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:10:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 13:10:53,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2020-10-13 13:10:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 13:10:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-10-13 13:10:53,899 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 92 [2020-10-13 13:10:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:53,900 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-13 13:10:53,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:10:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-10-13 13:10:53,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:10:53,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:53,901 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 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] [2020-10-13 13:10:53,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:10:53,903 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:53,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:53,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1888462793, now seen corresponding path program 14 times [2020-10-13 13:10:53,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:53,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143494061] [2020-10-13 13:10:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:53,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:53,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:54,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:58,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:10:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:10:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 13:10:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:10:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-13 13:10:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:10:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:59,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:10:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:10:59,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:10:59,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:10:59,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:59,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:59,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:10:59,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:10:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:59,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:59,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 13:10:59,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:59,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:10:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:59,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:59,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:10:59,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:10:59,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:59,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 13:10:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:10:59,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:10:59,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:10:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 13:10:59,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:10:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:10:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:10:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:10:59,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:10:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-10-13 13:10:59,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143494061] [2020-10-13 13:10:59,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:10:59,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:10:59,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182331023] [2020-10-13 13:10:59,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:10:59,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:10:59,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:10:59,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:10:59,251 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2020-10-13 13:10:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:10:59,376 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2020-10-13 13:10:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:10:59,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 104 [2020-10-13 13:10:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:10:59,378 INFO L225 Difference]: With dead ends: 93 [2020-10-13 13:10:59,378 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 13:10:59,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:10:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 13:10:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 13:10:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 13:10:59,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-13 13:10:59,383 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 104 [2020-10-13 13:10:59,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:10:59,384 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-13 13:10:59,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:10:59,384 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-13 13:10:59,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:10:59,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:10:59,385 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 7, 7, 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] [2020-10-13 13:10:59,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:10:59,385 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:10:59,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:10:59,386 INFO L82 PathProgramCache]: Analyzing trace with hash 637496469, now seen corresponding path program 15 times [2020-10-13 13:10:59,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:10:59,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191839918] [2020-10-13 13:10:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:10:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:10:59,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:10:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:04,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:11:04,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:04,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:11:04,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:11:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:04,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:11:04,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:04,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:04,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:04,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:04,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:04,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:04,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:04,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:04,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:04,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:04,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 13:11:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:04,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:04,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:04,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:11:04,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:04,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:04,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:04,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 13:11:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:04,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:04,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:04,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:04,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:11:04,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:04,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:04,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 13:11:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:04,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:04,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:04,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:11:04,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:04,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:04,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:04,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 13:11:04,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191839918] [2020-10-13 13:11:04,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:04,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:11:04,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585473018] [2020-10-13 13:11:04,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:11:04,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:04,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:11:04,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:11:04,603 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 10 states. [2020-10-13 13:11:04,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:04,729 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2020-10-13 13:11:04,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:11:04,730 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-13 13:11:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:04,731 INFO L225 Difference]: With dead ends: 114 [2020-10-13 13:11:04,731 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 13:11:04,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:11:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 13:11:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 13:11:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 13:11:04,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-13 13:11:04,737 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 106 [2020-10-13 13:11:04,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:04,737 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-13 13:11:04,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:11:04,737 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-13 13:11:04,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:11:04,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:04,738 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 7, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:04,739 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:11:04,739 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:04,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:04,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1754720425, now seen corresponding path program 16 times [2020-10-13 13:11:04,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:04,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784863279] [2020-10-13 13:11:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:04,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:04,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:11:09,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:11:09,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:11:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 13:11:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:11:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:09,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:09,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:09,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:09,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:09,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:11:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:09,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:09,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 13:11:09,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:11:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:09,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:11:09,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:09,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:09,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 13:11:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:09,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:09,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:09,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:11:09,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-13 13:11:09,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784863279] [2020-10-13 13:11:09,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:09,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:11:09,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729332085] [2020-10-13 13:11:09,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:11:09,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:09,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:11:09,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:11:09,952 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 11 states. [2020-10-13 13:11:10,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:10,055 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-10-13 13:11:10,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:11:10,056 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-13 13:11:10,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:10,057 INFO L225 Difference]: With dead ends: 97 [2020-10-13 13:11:10,058 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 13:11:10,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:11:10,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 13:11:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 13:11:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 13:11:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-13 13:11:10,064 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 108 [2020-10-13 13:11:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:10,065 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-13 13:11:10,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:11:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-13 13:11:10,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:11:10,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:10,066 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 8, 8, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:10,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:11:10,067 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:10,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:10,067 INFO L82 PathProgramCache]: Analyzing trace with hash 314893237, now seen corresponding path program 17 times [2020-10-13 13:11:10,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:10,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077859214] [2020-10-13 13:11:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:11:15,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:15,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:11:15,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:11:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:15,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 13:11:15,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:15,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:15,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 13:11:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:15,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 13:11:15,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:15,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 13:11:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:11:15,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 13:11:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:15,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:15,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:15,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:11:15,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:15,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 13:11:15,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077859214] [2020-10-13 13:11:15,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:15,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:11:15,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647685443] [2020-10-13 13:11:15,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:11:15,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:15,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:11:15,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:11:15,324 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 11 states. [2020-10-13 13:11:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:15,445 INFO L93 Difference]: Finished difference Result 120 states and 136 transitions. [2020-10-13 13:11:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:11:15,446 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 110 [2020-10-13 13:11:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:15,447 INFO L225 Difference]: With dead ends: 120 [2020-10-13 13:11:15,447 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 13:11:15,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:11:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 13:11:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 13:11:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 13:11:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2020-10-13 13:11:15,456 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 110 [2020-10-13 13:11:15,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:15,457 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2020-10-13 13:11:15,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:11:15,457 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2020-10-13 13:11:15,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:11:15,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:15,458 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 8, 8, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:15,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:11:15,459 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:15,459 INFO L82 PathProgramCache]: Analyzing trace with hash 234315127, now seen corresponding path program 18 times [2020-10-13 13:11:15,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:15,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492231274] [2020-10-13 13:11:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:20,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 13:11:20,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:20,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:11:20,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:20,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:11:20,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:20,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:11:20,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:20,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:20,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:20,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:20,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:20,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:20,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:20,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 13:11:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:20,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:20,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:20,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:11:20,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:20,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 13:11:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:20,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:20,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:20,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:20,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 13:11:20,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:20,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 13:11:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:20,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:20,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:11:20,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:20,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:20,676 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 13:11:20,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492231274] [2020-10-13 13:11:20,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:20,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:11:20,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114696177] [2020-10-13 13:11:20,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:11:20,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:20,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:11:20,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:11:20,678 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 12 states. [2020-10-13 13:11:20,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:20,818 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2020-10-13 13:11:20,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:11:20,821 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-10-13 13:11:20,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:20,822 INFO L225 Difference]: With dead ends: 122 [2020-10-13 13:11:20,822 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 13:11:20,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:11:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 13:11:20,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 13:11:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 13:11:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2020-10-13 13:11:20,828 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 112 [2020-10-13 13:11:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:20,828 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2020-10-13 13:11:20,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:11:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2020-10-13 13:11:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 13:11:20,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:20,830 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:20,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:11:20,830 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:20,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:20,830 INFO L82 PathProgramCache]: Analyzing trace with hash 108162745, now seen corresponding path program 19 times [2020-10-13 13:11:20,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:20,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601505614] [2020-10-13 13:11:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:20,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:20,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:25,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:25,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 13:11:25,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:25,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:11:25,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:11:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 13:11:25,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:11:25,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:25,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:25,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:25,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:25,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:25,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:25,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:25,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:25,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:11:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:25,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:25,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:25,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:11:25,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:11:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:11:25,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:11:25,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:25,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 13:11:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:25,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:25,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:25,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:25,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:25,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:11:25,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:25,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:25,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:25,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:25,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 13:11:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:25,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:25,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 13:11:25,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 13:11:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 13:11:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 180 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2020-10-13 13:11:26,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601505614] [2020-10-13 13:11:26,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:26,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 13:11:26,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415965341] [2020-10-13 13:11:26,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:11:26,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:26,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:11:26,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:11:26,004 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand 8 states. [2020-10-13 13:11:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:26,168 INFO L93 Difference]: Finished difference Result 127 states and 147 transitions. [2020-10-13 13:11:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:11:26,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 114 [2020-10-13 13:11:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:26,170 INFO L225 Difference]: With dead ends: 127 [2020-10-13 13:11:26,170 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 13:11:26,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:11:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 13:11:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-10-13 13:11:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 13:11:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-13 13:11:26,175 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 114 [2020-10-13 13:11:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:26,175 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-13 13:11:26,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:11:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-13 13:11:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 13:11:26,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:26,177 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 9, 9, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:26,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 13:11:26,177 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:26,178 INFO L82 PathProgramCache]: Analyzing trace with hash -656958636, now seen corresponding path program 20 times [2020-10-13 13:11:26,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:26,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040037684] [2020-10-13 13:11:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:26,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:28,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:31,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 13:11:31,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:31,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:11:31,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:31,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:11:31,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-13 13:11:31,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:11:31,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:31,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:31,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:31,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:31,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:31,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:31,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:31,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:31,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:11:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:31,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:31,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:31,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 13:11:31,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:31,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:11:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:31,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:31,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:11:31,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:31,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 13:11:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:31,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:31,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:31,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:11:31,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:31,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:11:31,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:31,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:31,430 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2020-10-13 13:11:31,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040037684] [2020-10-13 13:11:31,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:31,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:11:31,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174552157] [2020-10-13 13:11:31,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:11:31,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:31,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:11:31,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:11:31,432 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 12 states. [2020-10-13 13:11:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:31,580 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2020-10-13 13:11:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:11:31,580 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 126 [2020-10-13 13:11:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:31,581 INFO L225 Difference]: With dead ends: 111 [2020-10-13 13:11:31,582 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 13:11:31,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:11:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 13:11:31,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 13:11:31,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 13:11:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-10-13 13:11:31,591 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 126 [2020-10-13 13:11:31,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:31,592 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-10-13 13:11:31,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:11:31,592 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-10-13 13:11:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 13:11:31,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:31,594 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 9, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:31,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 13:11:31,598 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:31,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:31,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1708744754, now seen corresponding path program 21 times [2020-10-13 13:11:31,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:31,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468759187] [2020-10-13 13:11:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:31,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:31,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:33,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:36,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 13:11:36,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 13:11:36,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:11:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:11:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:36,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:36,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:36,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:36,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:36,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:36,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:36,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 13:11:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:36,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:36,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:11:36,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:11:36,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:36,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 13:11:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:36,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:36,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:36,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:36,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 13:11:36,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:11:36,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:36,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:36,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 13:11:36,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:36,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:36,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:36,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:11:36,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:36,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:36,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:11:36,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:36,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2020-10-13 13:11:36,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468759187] [2020-10-13 13:11:36,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:36,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:11:36,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808701051] [2020-10-13 13:11:36,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:11:36,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:36,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:11:36,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:11:36,884 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 13 states. [2020-10-13 13:11:37,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:37,045 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2020-10-13 13:11:37,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:11:37,046 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-13 13:11:37,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:37,047 INFO L225 Difference]: With dead ends: 136 [2020-10-13 13:11:37,047 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 13:11:37,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:11:37,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 13:11:37,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 13:11:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 13:11:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-13 13:11:37,052 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 128 [2020-10-13 13:11:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:37,052 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-13 13:11:37,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:11:37,053 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-13 13:11:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-13 13:11:37,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:37,054 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:37,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 13:11:37,054 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:37,055 INFO L82 PathProgramCache]: Analyzing trace with hash 467512692, now seen corresponding path program 22 times [2020-10-13 13:11:37,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:37,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438453398] [2020-10-13 13:11:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:42,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-13 13:11:42,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:42,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:11:42,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:42,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:11:42,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 13:11:42,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 13:11:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:42,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:42,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:42,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:42,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:42,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:42,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:42,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:42,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:11:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:42,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:42,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:42,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:42,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 13:11:42,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:42,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:42,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:42,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:42,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:42,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:11:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:42,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:42,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:42,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:11:42,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 13:11:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:42,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:42,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:11:42,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:11:42,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:42,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2020-10-13 13:11:42,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438453398] [2020-10-13 13:11:42,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:42,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:11:42,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157238548] [2020-10-13 13:11:42,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:11:42,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:42,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:11:42,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:11:42,305 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 13 states. [2020-10-13 13:11:42,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:42,472 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2020-10-13 13:11:42,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:11:42,472 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-10-13 13:11:42,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:42,473 INFO L225 Difference]: With dead ends: 115 [2020-10-13 13:11:42,474 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 13:11:42,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:11:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 13:11:42,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 13:11:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 13:11:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-10-13 13:11:42,486 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 130 [2020-10-13 13:11:42,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:42,487 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-10-13 13:11:42,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:11:42,487 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-10-13 13:11:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-13 13:11:42,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:42,488 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 10, 10, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:42,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 13:11:42,489 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:42,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:42,489 INFO L82 PathProgramCache]: Analyzing trace with hash -6067630, now seen corresponding path program 23 times [2020-10-13 13:11:42,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:42,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382388978] [2020-10-13 13:11:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:42,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:42,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-13 13:11:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 13:11:47,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:11:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-13 13:11:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:11:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:47,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:47,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:47,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:47,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:11:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:47,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 13:11:47,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:11:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:47,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 13:11:47,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:47,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 13:11:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:47,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2020-10-13 13:11:47,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382388978] [2020-10-13 13:11:47,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:47,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:11:47,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200686193] [2020-10-13 13:11:47,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:11:47,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:47,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:11:47,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:11:47,787 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand 14 states. [2020-10-13 13:11:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:47,963 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-10-13 13:11:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:11:47,964 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 132 [2020-10-13 13:11:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:47,965 INFO L225 Difference]: With dead ends: 117 [2020-10-13 13:11:47,965 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 13:11:47,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:11:47,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 13:11:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 13:11:47,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 13:11:47,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-10-13 13:11:47,971 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 132 [2020-10-13 13:11:47,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:47,972 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-10-13 13:11:47,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:11:47,972 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-10-13 13:11:47,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 13:11:47,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:47,973 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:47,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 13:11:47,974 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:47,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:47,974 INFO L82 PathProgramCache]: Analyzing trace with hash 149776304, now seen corresponding path program 24 times [2020-10-13 13:11:47,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:47,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898176635] [2020-10-13 13:11:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:48,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:50,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:53,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 13:11:53,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:53,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 13:11:53,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:11:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 13:11:53,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:11:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:53,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:53,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:53,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:53,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:53,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:53,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:53,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:53,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:11:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:53,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 13:11:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:11:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:11:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:11:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:53,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 13:11:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:53,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:53,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:53,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 13:11:53,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:11:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 13:11:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:53,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:53,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 13:11:53,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:53,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 13:11:53,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 13:11:53,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:53,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:53,295 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2020-10-13 13:11:53,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898176635] [2020-10-13 13:11:53,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:53,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 13:11:53,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419744583] [2020-10-13 13:11:53,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 13:11:53,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:53,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 13:11:53,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 13:11:53,297 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 9 states. [2020-10-13 13:11:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:53,496 INFO L93 Difference]: Finished difference Result 149 states and 171 transitions. [2020-10-13 13:11:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 13:11:53,497 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-10-13 13:11:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:53,498 INFO L225 Difference]: With dead ends: 149 [2020-10-13 13:11:53,498 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 13:11:53,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:11:53,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 13:11:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2020-10-13 13:11:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 13:11:53,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2020-10-13 13:11:53,504 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 134 [2020-10-13 13:11:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:53,505 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2020-10-13 13:11:53,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 13:11:53,505 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2020-10-13 13:11:53,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 13:11:53,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:53,506 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 11, 11, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:53,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 13:11:53,507 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:53,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1586492469, now seen corresponding path program 25 times [2020-10-13 13:11:53,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:53,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925177861] [2020-10-13 13:11:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:58,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:58,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 13:11:58,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:11:58,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 13:11:58,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 13:11:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:11:58,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 13:11:58,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:58,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:11:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:58,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:58,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:58,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:11:58,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:11:58,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:11:58,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:58,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:11:58,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:58,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:58,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 13:11:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:58,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:58,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:58,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:58,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 13:11:58,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:58,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:58,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:58,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:58,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:58,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 13:11:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:58,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:58,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:58,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:58,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:58,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 13:11:58,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:58,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:58,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:58,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 13:11:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:58,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:58,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:58,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:11:58,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:11:58,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:11:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:11:58,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:11:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:11:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:11:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:11:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:11:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2020-10-13 13:11:58,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925177861] [2020-10-13 13:11:58,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:11:58,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 13:11:58,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725765776] [2020-10-13 13:11:58,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:11:58,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:11:58,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:11:58,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:11:58,898 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 14 states. [2020-10-13 13:11:59,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:11:59,060 INFO L93 Difference]: Finished difference Result 154 states and 174 transitions. [2020-10-13 13:11:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:11:59,061 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 146 [2020-10-13 13:11:59,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:11:59,062 INFO L225 Difference]: With dead ends: 154 [2020-10-13 13:11:59,062 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 13:11:59,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:11:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 13:11:59,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 13:11:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 13:11:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 101 transitions. [2020-10-13 13:11:59,072 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 101 transitions. Word has length 146 [2020-10-13 13:11:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:11:59,073 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 101 transitions. [2020-10-13 13:11:59,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:11:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 101 transitions. [2020-10-13 13:11:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 13:11:59,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:11:59,074 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 11, 11, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:11:59,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 13:11:59,074 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:11:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:11:59,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1547154291, now seen corresponding path program 26 times [2020-10-13 13:11:59,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:11:59,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [641283520] [2020-10-13 13:11:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:11:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:11:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:59,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:11:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:04,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 13:12:04,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:04,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 13:12:04,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:12:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:04,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:12:04,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:04,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:04,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:04,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:04,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:04,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 13:12:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:04,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:04,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:04,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:12:04,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:12:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 13:12:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:04,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:04,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:04,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:12:04,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:12:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:04,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 13:12:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:04,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:04,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:04,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:12:04,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:12:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 923 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 802 trivial. 0 not checked. [2020-10-13 13:12:04,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [641283520] [2020-10-13 13:12:04,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:04,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:12:04,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038993956] [2020-10-13 13:12:04,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:12:04,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:04,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:12:04,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:12:04,417 INFO L87 Difference]: Start difference. First operand 91 states and 101 transitions. Second operand 15 states. [2020-10-13 13:12:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:04,585 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2020-10-13 13:12:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:12:04,585 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 13:12:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:04,586 INFO L225 Difference]: With dead ends: 156 [2020-10-13 13:12:04,586 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 13:12:04,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:12:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 13:12:04,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 13:12:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 13:12:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2020-10-13 13:12:04,593 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 148 [2020-10-13 13:12:04,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:04,594 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2020-10-13 13:12:04,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:12:04,594 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2020-10-13 13:12:04,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 13:12:04,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:04,595 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 12, 12, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:04,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 13:12:04,596 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:04,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1897096399, now seen corresponding path program 27 times [2020-10-13 13:12:04,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:04,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280986714] [2020-10-13 13:12:04,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:04,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:04,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:09,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:09,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 13:12:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:12:09,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 13:12:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 13:12:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 13:12:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:09,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:09,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:09,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:09,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:09,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:09,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:09,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:09,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:09,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:09,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:09,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:09,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:12:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:09,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:09,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:09,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:09,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:09,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:12:09,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:09,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:09,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:09,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:09,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:12:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:09,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:09,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:09,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 13:12:09,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:09,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:09,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 13:12:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:09,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:09,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:09,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:09,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:09,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:09,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 13:12:09,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:12:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:09,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2020-10-13 13:12:09,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1280986714] [2020-10-13 13:12:09,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:09,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 13:12:09,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842466743] [2020-10-13 13:12:09,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 13:12:09,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:09,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 13:12:09,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:12:09,942 INFO L87 Difference]: Start difference. First operand 93 states and 103 transitions. Second operand 15 states. [2020-10-13 13:12:10,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:10,112 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2020-10-13 13:12:10,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 13:12:10,113 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 150 [2020-10-13 13:12:10,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:10,114 INFO L225 Difference]: With dead ends: 131 [2020-10-13 13:12:10,115 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 13:12:10,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 13:12:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 13:12:10,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 13:12:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 13:12:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-13 13:12:10,121 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 150 [2020-10-13 13:12:10,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:10,121 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-13 13:12:10,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 13:12:10,122 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-13 13:12:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 13:12:10,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:10,123 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:10,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 13:12:10,123 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:10,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1389877933, now seen corresponding path program 28 times [2020-10-13 13:12:10,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:10,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949992098] [2020-10-13 13:12:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:10,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:10,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:14,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:15,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 13:12:15,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 13:12:15,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:12:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 13:12:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:12:15,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:15,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:15,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:15,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:15,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:15,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:15,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:12:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:15,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:15,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:15,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 13:12:15,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 13:12:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:12:15,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:12:15,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 13:12:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:15,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:15,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:15,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 13:12:15,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:12:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:15,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 13:12:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:15,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:15,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 13:12:15,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 13:12:15,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 13:12:15,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:15,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2020-10-13 13:12:15,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949992098] [2020-10-13 13:12:15,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:15,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 13:12:15,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219522006] [2020-10-13 13:12:15,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 13:12:15,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:15,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 13:12:15,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 13:12:15,410 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 10 states. [2020-10-13 13:12:15,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:15,614 INFO L93 Difference]: Finished difference Result 165 states and 189 transitions. [2020-10-13 13:12:15,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 13:12:15,614 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 152 [2020-10-13 13:12:15,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:15,615 INFO L225 Difference]: With dead ends: 165 [2020-10-13 13:12:15,615 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 13:12:15,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:12:15,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 13:12:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2020-10-13 13:12:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 13:12:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2020-10-13 13:12:15,622 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 152 [2020-10-13 13:12:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:15,623 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2020-10-13 13:12:15,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 13:12:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2020-10-13 13:12:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 13:12:15,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:15,624 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 12, 12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:15,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 13:12:15,624 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:15,625 INFO L82 PathProgramCache]: Analyzing trace with hash 300896584, now seen corresponding path program 29 times [2020-10-13 13:12:15,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:15,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924992913] [2020-10-13 13:12:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:15,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:15,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:16,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:16,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:20,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:20,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 13:12:20,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:20,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 13:12:20,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:12:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:12:20,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:20,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:20,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 13:12:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:20,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:20,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:20,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:20,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:20,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:20,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:12:20,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:20,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:20,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:20,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 13:12:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:20,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:20,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:20,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:20,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:20,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:20,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 13:12:20,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:20,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 13:12:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:20,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:20,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:20,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:20,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:20,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:12:20,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1062 trivial. 0 not checked. [2020-10-13 13:12:20,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924992913] [2020-10-13 13:12:20,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:20,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:12:20,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056670709] [2020-10-13 13:12:20,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:12:20,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:20,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:12:20,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:12:20,965 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand 16 states. [2020-10-13 13:12:21,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:21,142 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2020-10-13 13:12:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:12:21,142 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 164 [2020-10-13 13:12:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:21,143 INFO L225 Difference]: With dead ends: 170 [2020-10-13 13:12:21,143 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 13:12:21,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:12:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 13:12:21,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 13:12:21,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 13:12:21,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-10-13 13:12:21,150 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 164 [2020-10-13 13:12:21,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:21,151 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-10-13 13:12:21,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:12:21,151 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-10-13 13:12:21,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 13:12:21,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:21,152 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 13, 13, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:21,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 13:12:21,153 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:21,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:21,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1579833974, now seen corresponding path program 30 times [2020-10-13 13:12:21,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:21,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232630253] [2020-10-13 13:12:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:21,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:21,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:26,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 13:12:26,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 13:12:26,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 13:12:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 13:12:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 13:12:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:26,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:26,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:26,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:26,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:26,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:26,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:26,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:26,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:12:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:26,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:26,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 13:12:26,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:26,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:26,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:26,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:12:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:26,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 13:12:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:26,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:26,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 13:12:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:26,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:26,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:26,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 13:12:26,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:26,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1231 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2020-10-13 13:12:26,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232630253] [2020-10-13 13:12:26,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:26,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 13:12:26,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748032070] [2020-10-13 13:12:26,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 13:12:26,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:26,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 13:12:26,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:12:26,547 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 16 states. [2020-10-13 13:12:26,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:26,659 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2020-10-13 13:12:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 13:12:26,659 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 166 [2020-10-13 13:12:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:26,660 INFO L225 Difference]: With dead ends: 143 [2020-10-13 13:12:26,661 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 13:12:26,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 13:12:26,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 13:12:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 13:12:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 13:12:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-10-13 13:12:26,666 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 166 [2020-10-13 13:12:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:26,666 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-10-13 13:12:26,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 13:12:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-10-13 13:12:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 13:12:26,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:26,668 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 13, 13, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:26,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 13:12:26,668 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:26,669 INFO L82 PathProgramCache]: Analyzing trace with hash -387703704, now seen corresponding path program 31 times [2020-10-13 13:12:26,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:26,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462711461] [2020-10-13 13:12:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:26,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:31,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:31,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 13:12:31,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 13:12:31,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:12:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 13:12:31,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:12:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:31,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:31,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:31,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:31,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:31,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:31,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:31,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:31,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:31,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:31,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:31,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:12:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:31,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:31,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:31,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:31,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:31,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:31,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 13:12:31,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:31,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:31,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:12:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:31,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:31,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:32,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:32,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:32,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 13:12:32,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:32,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:32,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:12:32,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 13:12:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:32,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:32,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 13:12:32,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:32,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:32,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2020-10-13 13:12:32,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462711461] [2020-10-13 13:12:32,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:32,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:12:32,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310829194] [2020-10-13 13:12:32,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:12:32,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:32,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:12:32,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:12:32,185 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 17 states. [2020-10-13 13:12:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:32,377 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2020-10-13 13:12:32,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:12:32,377 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-13 13:12:32,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:32,378 INFO L225 Difference]: With dead ends: 145 [2020-10-13 13:12:32,378 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 13:12:32,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:12:32,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 13:12:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 13:12:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 13:12:32,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2020-10-13 13:12:32,385 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 168 [2020-10-13 13:12:32,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:32,386 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2020-10-13 13:12:32,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:12:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2020-10-13 13:12:32,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 13:12:32,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:32,388 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 14, 14, 13, 13, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:12:32,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 13:12:32,389 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1506782266, now seen corresponding path program 32 times [2020-10-13 13:12:32,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:32,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895929507] [2020-10-13 13:12:32,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:32,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:32,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:37,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 13:12:37,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 13:12:37,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 13:12:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:37,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:12:37,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:37,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:37,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:37,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:37,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:37,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:37,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:37,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:37,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 13:12:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:37,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:37,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:37,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:12:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-13 13:12:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:37,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:37,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 13:12:37,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:37,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:37,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:37,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:12:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:37,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:37,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-13 13:12:37,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1283 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1114 trivial. 0 not checked. [2020-10-13 13:12:37,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895929507] [2020-10-13 13:12:37,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:37,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 13:12:37,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858942290] [2020-10-13 13:12:37,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 13:12:37,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 13:12:37,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:12:37,765 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand 17 states. [2020-10-13 13:12:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:37,882 INFO L93 Difference]: Finished difference Result 180 states and 202 transitions. [2020-10-13 13:12:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 13:12:37,883 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 170 [2020-10-13 13:12:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:37,884 INFO L225 Difference]: With dead ends: 180 [2020-10-13 13:12:37,884 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 13:12:37,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 13:12:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 13:12:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 13:12:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 13:12:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2020-10-13 13:12:37,890 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 170 [2020-10-13 13:12:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:37,890 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2020-10-13 13:12:37,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 13:12:37,891 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2020-10-13 13:12:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 13:12:37,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:37,892 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 14, 14, 14, 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] [2020-10-13 13:12:37,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 13:12:37,892 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:37,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1617096328, now seen corresponding path program 33 times [2020-10-13 13:12:37,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:37,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462422471] [2020-10-13 13:12:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:37,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:42,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:42,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 13:12:42,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-13 13:12:42,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:12:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 13:12:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:12:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:42,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:42,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:42,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:42,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:42,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:42,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:42,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:42,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:12:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:43,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:43,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 13:12:43,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 13:12:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:12:43,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:12:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:43,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 13:12:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:43,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:43,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 13:12:43,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:43,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 13:12:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:43,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 13:12:43,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 13:12:43,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 13:12:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 0 proven. 519 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2020-10-13 13:12:43,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462422471] [2020-10-13 13:12:43,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:43,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 13:12:43,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265631997] [2020-10-13 13:12:43,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:12:43,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:43,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:12:43,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:12:43,242 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 11 states. [2020-10-13 13:12:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:43,483 INFO L93 Difference]: Finished difference Result 185 states and 211 transitions. [2020-10-13 13:12:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 13:12:43,483 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-10-13 13:12:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:43,485 INFO L225 Difference]: With dead ends: 185 [2020-10-13 13:12:43,485 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 13:12:43,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:12:43,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 13:12:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2020-10-13 13:12:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 13:12:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-10-13 13:12:43,493 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 172 [2020-10-13 13:12:43,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:43,493 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-10-13 13:12:43,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:12:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-10-13 13:12:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-13 13:12:43,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:43,495 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 14, 14, 14, 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] [2020-10-13 13:12:43,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 13:12:43,495 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:43,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:43,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1551974237, now seen corresponding path program 34 times [2020-10-13 13:12:43,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:43,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419375896] [2020-10-13 13:12:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:43,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:48,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:48,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-13 13:12:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-13 13:12:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:12:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:12:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:48,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:48,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:48,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:48,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:12:48,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:48,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:48,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 13:12:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:48,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:48,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:48,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:48,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:48,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:48,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 13:12:48,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:48,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:48,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:48,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 13:12:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:48,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:48,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:48,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:48,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 13:12:48,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:48,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 13:12:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:48,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:48,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:48,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:48,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 13:12:48,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:48,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:48,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2020-10-13 13:12:49,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419375896] [2020-10-13 13:12:49,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:49,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:12:49,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586716069] [2020-10-13 13:12:49,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:12:49,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:49,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:12:49,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:12:49,004 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 18 states. [2020-10-13 13:12:49,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:49,202 INFO L93 Difference]: Finished difference Result 190 states and 214 transitions. [2020-10-13 13:12:49,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:12:49,202 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 184 [2020-10-13 13:12:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:49,203 INFO L225 Difference]: With dead ends: 190 [2020-10-13 13:12:49,203 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 13:12:49,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:12:49,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 13:12:49,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-13 13:12:49,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 13:12:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-10-13 13:12:49,210 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 184 [2020-10-13 13:12:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:49,211 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-10-13 13:12:49,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:12:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-10-13 13:12:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 13:12:49,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:49,212 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 15, 15, 14, 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] [2020-10-13 13:12:49,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 13:12:49,212 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:49,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1268621339, now seen corresponding path program 35 times [2020-10-13 13:12:49,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:49,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189798367] [2020-10-13 13:12:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:49,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 13:12:54,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:12:54,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:12:54,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:12:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:12:54,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 13:12:54,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:12:54,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:12:54,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:12:54,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 13:12:54,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:12:54,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-13 13:12:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:54,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:54,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 13:12:54,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:54,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:54,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:54,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 13:12:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:54,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:54,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 13:12:54,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 13:12:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:54,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:12:54,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:12:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 13:12:54,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:12:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:12:54,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:12:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:12:54,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1612 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 1387 trivial. 0 not checked. [2020-10-13 13:12:54,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189798367] [2020-10-13 13:12:54,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:12:54,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 13:12:54,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137911558] [2020-10-13 13:12:54,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:12:54,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:12:54,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:12:54,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:12:54,705 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 19 states. [2020-10-13 13:12:54,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:12:54,863 INFO L93 Difference]: Finished difference Result 192 states and 216 transitions. [2020-10-13 13:12:54,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:12:54,864 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 186 [2020-10-13 13:12:54,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:12:54,865 INFO L225 Difference]: With dead ends: 192 [2020-10-13 13:12:54,865 INFO L226 Difference]: Without dead ends: 116 [2020-10-13 13:12:54,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:12:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-13 13:12:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2020-10-13 13:12:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 13:12:54,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 127 transitions. [2020-10-13 13:12:54,871 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 127 transitions. Word has length 186 [2020-10-13 13:12:54,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:12:54,871 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 127 transitions. [2020-10-13 13:12:54,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:12:54,872 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 127 transitions. [2020-10-13 13:12:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-13 13:12:54,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:12:54,873 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 16, 16, 14, 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] [2020-10-13 13:12:54,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 13:12:54,873 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:12:54,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:12:54,874 INFO L82 PathProgramCache]: Analyzing trace with hash 450573991, now seen corresponding path program 36 times [2020-10-13 13:12:54,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:12:54,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111926178] [2020-10-13 13:12:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:12:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:12:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:54,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:55,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:55,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:12:59,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:12:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 13:12:59,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:12:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:12:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:12:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:12:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-13 13:12:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 13:12:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:00,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:00,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:00,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:00,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:13:00,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:00,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:13:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:00,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:00,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:13:00,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:00,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 13:13:00,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:00,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:00,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:00,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:00,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 13:13:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:00,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:00,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:13:00,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:00,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 13:13:00,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:00,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:00,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 13:13:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:00,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:13:00,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 13:13:00,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:13:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:00,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:13:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1643 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 1447 trivial. 0 not checked. [2020-10-13 13:13:00,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111926178] [2020-10-13 13:13:00,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:00,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 13:13:00,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421932298] [2020-10-13 13:13:00,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 13:13:00,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 13:13:00,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:13:00,469 INFO L87 Difference]: Start difference. First operand 115 states and 127 transitions. Second operand 18 states. [2020-10-13 13:13:00,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:00,640 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2020-10-13 13:13:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:13:00,640 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 188 [2020-10-13 13:13:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:00,641 INFO L225 Difference]: With dead ends: 161 [2020-10-13 13:13:00,641 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 13:13:00,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 13:13:00,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 13:13:00,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-13 13:13:00,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 13:13:00,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 129 transitions. [2020-10-13 13:13:00,647 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 129 transitions. Word has length 188 [2020-10-13 13:13:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:00,647 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 129 transitions. [2020-10-13 13:13:00,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 13:13:00,647 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 129 transitions. [2020-10-13 13:13:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-13 13:13:00,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:00,649 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 16, 16, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:00,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 13:13:00,649 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:00,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:00,649 INFO L82 PathProgramCache]: Analyzing trace with hash 987315717, now seen corresponding path program 37 times [2020-10-13 13:13:00,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:00,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763143029] [2020-10-13 13:13:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:00,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-13 13:13:05,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 13:13:05,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:13:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 13:13:05,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:13:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:05,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:05,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:05,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:13:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:13:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 13:13:05,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 13:13:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:13:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:13:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:05,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-13 13:13:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:13:05,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 13:13:05,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:13:05,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:05,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:05,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 13:13:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:05,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:06,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:06,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 13:13:06,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 13:13:06,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 13:13:06,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:06,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1672 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 1000 trivial. 0 not checked. [2020-10-13 13:13:06,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763143029] [2020-10-13 13:13:06,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:06,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 13:13:06,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338933872] [2020-10-13 13:13:06,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:13:06,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:06,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:13:06,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:13:06,025 INFO L87 Difference]: Start difference. First operand 117 states and 129 transitions. Second operand 12 states. [2020-10-13 13:13:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:06,299 INFO L93 Difference]: Finished difference Result 201 states and 229 transitions. [2020-10-13 13:13:06,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:13:06,299 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 190 [2020-10-13 13:13:06,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:06,300 INFO L225 Difference]: With dead ends: 201 [2020-10-13 13:13:06,301 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 13:13:06,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:13:06,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 13:13:06,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2020-10-13 13:13:06,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 13:13:06,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2020-10-13 13:13:06,308 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 190 [2020-10-13 13:13:06,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:06,309 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 134 transitions. [2020-10-13 13:13:06,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 13:13:06,309 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2020-10-13 13:13:06,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 13:13:06,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:06,310 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 16, 16, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:06,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 13:13:06,311 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:06,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:06,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1522754208, now seen corresponding path program 38 times [2020-10-13 13:13:06,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:06,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282415486] [2020-10-13 13:13:06,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:06,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:06,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:06,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:11,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:11,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-13 13:13:11,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-13 13:13:11,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 13:13:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:13:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 13:13:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:11,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:11,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:11,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:11,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:11,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:11,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 13:13:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:11,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:11,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:11,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:11,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 13:13:11,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:13:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:11,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 13:13:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:11,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:11,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:11,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:11,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 13:13:11,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:13:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:11,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 13:13:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:11,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:11,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:11,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:11,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-13 13:13:11,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:13:11,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2020-10-13 13:13:11,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282415486] [2020-10-13 13:13:11,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:11,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 13:13:11,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100727892] [2020-10-13 13:13:11,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 13:13:11,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 13:13:11,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:13:11,941 INFO L87 Difference]: Start difference. First operand 121 states and 134 transitions. Second operand 20 states. [2020-10-13 13:13:12,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:12,090 INFO L93 Difference]: Finished difference Result 206 states and 232 transitions. [2020-10-13 13:13:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 13:13:12,090 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 202 [2020-10-13 13:13:12,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:12,092 INFO L225 Difference]: With dead ends: 206 [2020-10-13 13:13:12,092 INFO L226 Difference]: Without dead ends: 124 [2020-10-13 13:13:12,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:13:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-13 13:13:12,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2020-10-13 13:13:12,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 13:13:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 136 transitions. [2020-10-13 13:13:12,098 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 136 transitions. Word has length 202 [2020-10-13 13:13:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:12,099 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 136 transitions. [2020-10-13 13:13:12,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 13:13:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 136 transitions. [2020-10-13 13:13:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 13:13:12,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:12,101 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 17, 17, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:12,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 13:13:12,101 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:12,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:12,101 INFO L82 PathProgramCache]: Analyzing trace with hash -242584222, now seen corresponding path program 39 times [2020-10-13 13:13:12,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:12,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962502662] [2020-10-13 13:13:12,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:12,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:17,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:17,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-13 13:13:17,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:17,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-13 13:13:17,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:17,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 13:13:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:13:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 13:13:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:17,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:17,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:17,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:17,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 13:13:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:17,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:17,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:17,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:17,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:17,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 13:13:17,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:13:17,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:17,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 13:13:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:17,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:17,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:17,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:17,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:17,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 13:13:17,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:17,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:17,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:13:17,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:17,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:17,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-13 13:13:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:17,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:17,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:17,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:17,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 13:13:17,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:13:17,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:17,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2014 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 1725 trivial. 0 not checked. [2020-10-13 13:13:17,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962502662] [2020-10-13 13:13:17,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:17,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 13:13:17,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134300426] [2020-10-13 13:13:17,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 13:13:17,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:17,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 13:13:17,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:13:17,859 INFO L87 Difference]: Start difference. First operand 123 states and 136 transitions. Second operand 21 states. [2020-10-13 13:13:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:18,029 INFO L93 Difference]: Finished difference Result 208 states and 234 transitions. [2020-10-13 13:13:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 13:13:18,029 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 204 [2020-10-13 13:13:18,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:18,031 INFO L225 Difference]: With dead ends: 208 [2020-10-13 13:13:18,031 INFO L226 Difference]: Without dead ends: 126 [2020-10-13 13:13:18,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 13:13:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-13 13:13:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 125. [2020-10-13 13:13:18,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-13 13:13:18,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2020-10-13 13:13:18,039 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 204 [2020-10-13 13:13:18,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:18,041 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2020-10-13 13:13:18,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 13:13:18,041 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2020-10-13 13:13:18,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 13:13:18,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:18,043 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 18, 18, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:18,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 13:13:18,043 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:18,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:18,044 INFO L82 PathProgramCache]: Analyzing trace with hash -220733532, now seen corresponding path program 40 times [2020-10-13 13:13:18,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:18,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352352553] [2020-10-13 13:13:18,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:18,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:23,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:23,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 13:13:23,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:13:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 13:13:23,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:13:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:13:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:13:23,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:23,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:23,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:23,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:23,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:23,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 13:13:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:23,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:23,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:23,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:23,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-13 13:13:23,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 13:13:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:13:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 13:13:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 13:13:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:23,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-13 13:13:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:13:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:23,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 13:13:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:23,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:23,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:23,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 13:13:23,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:23,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 13:13:23,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 13:13:23,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:23,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2049 backedges. 0 proven. 845 refuted. 0 times theorem prover too weak. 1204 trivial. 0 not checked. [2020-10-13 13:13:23,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352352553] [2020-10-13 13:13:23,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:23,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 13:13:23,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843416601] [2020-10-13 13:13:23,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 13:13:23,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:23,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 13:13:23,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:13:23,579 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand 13 states. [2020-10-13 13:13:23,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:23,906 INFO L93 Difference]: Finished difference Result 213 states and 243 transitions. [2020-10-13 13:13:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 13:13:23,907 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 206 [2020-10-13 13:13:23,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:23,908 INFO L225 Difference]: With dead ends: 213 [2020-10-13 13:13:23,908 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 13:13:23,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:13:23,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 13:13:23,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2020-10-13 13:13:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-13 13:13:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2020-10-13 13:13:23,916 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 206 [2020-10-13 13:13:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:23,916 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2020-10-13 13:13:23,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 13:13:23,916 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2020-10-13 13:13:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-13 13:13:23,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:23,919 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 18, 18, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:23,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 13:13:23,919 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:23,919 INFO L82 PathProgramCache]: Analyzing trace with hash -939405889, now seen corresponding path program 41 times [2020-10-13 13:13:23,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:23,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549814897] [2020-10-13 13:13:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:23,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:24,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:24,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:28,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:28,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-13 13:13:28,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:13:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 13:13:28,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:13:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-10-13 13:13:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 13:13:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:13:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:29,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:13:29,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:13:29,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:13:29,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:29,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:29,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:29,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:29,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 13:13:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:29,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:13:29,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:29,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 13:13:29,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:29,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:29,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:29,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:29,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 13:13:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:29,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:29,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:13:29,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:29,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-13 13:13:29,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:29,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:13:29,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:29,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:29,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 13:13:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:29,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:13:29,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 13:13:29,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 13:13:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-13 13:13:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:13:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:13:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 13:13:29,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:13:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:13:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2394 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2169 trivial. 0 not checked. [2020-10-13 13:13:29,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549814897] [2020-10-13 13:13:29,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 13:13:29,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 13:13:29,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393288341] [2020-10-13 13:13:29,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:13:29,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:13:29,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:13:29,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:13:29,554 INFO L87 Difference]: Start difference. First operand 129 states and 143 transitions. Second operand 19 states. [2020-10-13 13:13:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:13:29,753 INFO L93 Difference]: Finished difference Result 183 states and 208 transitions. [2020-10-13 13:13:29,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 13:13:29,754 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 218 [2020-10-13 13:13:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:13:29,756 INFO L225 Difference]: With dead ends: 183 [2020-10-13 13:13:29,756 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 13:13:29,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:13:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 13:13:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2020-10-13 13:13:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 13:13:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2020-10-13 13:13:29,765 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 218 [2020-10-13 13:13:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:13:29,766 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2020-10-13 13:13:29,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:13:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2020-10-13 13:13:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-13 13:13:29,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:13:29,767 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 18, 18, 16, 16, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:13:29,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 13:13:29,768 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:13:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:13:29,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1245550237, now seen corresponding path program 42 times [2020-10-13 13:13:29,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:13:29,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106502017] [2020-10-13 13:13:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:13:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:13:29,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:13:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking...