/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:13:57,535 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:13:57,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:13:57,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:13:57,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:13:57,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:13:57,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:13:57,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:13:57,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:13:57,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:13:57,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:13:57,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:13:57,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:13:57,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:13:57,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:13:57,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:13:57,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:13:57,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:13:57,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:13:57,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:13:57,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:13:57,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:13:57,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:13:57,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:13:57,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:13:57,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:13:57,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:13:57,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:13:57,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:13:57,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:13:57,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:13:57,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:13:57,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:13:57,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:13:57,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:13:57,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:13:57,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:13:57,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:13:57,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:13:57,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:13:57,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:13:57,597 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 14:13:57,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:13:57,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:13:57,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:13:57,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:13:57,622 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:13:57,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:13:57,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:13:57,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:13:57,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:13:57,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:13:57,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:13:57,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:13:57,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:13:57,624 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:13:57,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:13:57,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:13:57,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:13:57,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:13:57,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:13:57,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:13:57,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:13:57,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:13:57,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:13:57,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:13:57,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:13:57,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:13:57,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:13:57,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:13:57,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:13:57,627 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 14:13:57,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:13:57,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:13:57,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:13:57,987 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:13:57,987 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:13:57,988 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:13:58,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eb7b61ca/2ebdc3169fa94334bd17e0cefe39994b/FLAG663fa02e7 [2020-10-13 14:13:58,639 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:13:58,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:13:58,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eb7b61ca/2ebdc3169fa94334bd17e0cefe39994b/FLAG663fa02e7 [2020-10-13 14:13:58,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eb7b61ca/2ebdc3169fa94334bd17e0cefe39994b [2020-10-13 14:13:58,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:13:58,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:13:58,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:13:58,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:13:58,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:13:58,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:13:58" (1/1) ... [2020-10-13 14:13:58,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf2a9e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:13:58, skipping insertion in model container [2020-10-13 14:13:58,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:13:58" (1/1) ... [2020-10-13 14:13:58,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:13:59,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:13:59,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:13:59,692 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:14:00,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:14:00,175 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:14:00,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00 WrapperNode [2020-10-13 14:14:00,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:14:00,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:14:00,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:14:00,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:14:00,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (1/1) ... [2020-10-13 14:14:00,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (1/1) ... [2020-10-13 14:14:00,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (1/1) ... [2020-10-13 14:14:00,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (1/1) ... [2020-10-13 14:14:00,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (1/1) ... [2020-10-13 14:14:00,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (1/1) ... [2020-10-13 14:14:00,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (1/1) ... [2020-10-13 14:14:00,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:14:00,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:14:00,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:14:00,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:14:00,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (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 14:14:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:14:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:14:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:14:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:14:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:14:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:14:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:14:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:14:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:14:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:14:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:14:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:14:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:14:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:14:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:14:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:14:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:14:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:14:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:14:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:14:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:14:01,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:14:01,763 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:14:01,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:14:01 BoogieIcfgContainer [2020-10-13 14:14:01,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:14:01,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:14:01,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:14:01,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:14:01,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:13:58" (1/3) ... [2020-10-13 14:14:01,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2b97c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:14:01, skipping insertion in model container [2020-10-13 14:14:01,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:14:00" (2/3) ... [2020-10-13 14:14:01,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2b97c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:14:01, skipping insertion in model container [2020-10-13 14:14:01,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:14:01" (3/3) ... [2020-10-13 14:14:01,779 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2020-10-13 14:14:01,790 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:14:01,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-13 14:14:01,814 INFO L251 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-13 14:14:01,842 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:14:01,842 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:14:01,843 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:14:01,843 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:14:01,843 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:14:01,843 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:14:01,843 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:14:01,844 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:14:01,897 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-10-13 14:14:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:14:01,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:01,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:01,927 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:01,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2049464648, now seen corresponding path program 1 times [2020-10-13 14:14:01,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:01,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930484936] [2020-10-13 14:14:01,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:03,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:03,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:06,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:07,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:07,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:14:07,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:14:07,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 14:14:07,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:14:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:14:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:14:07,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 14:14:08,180 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:08,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:08,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:08,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:08,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:08,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:14:08,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:08,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:08,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:08,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:08,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930484936] [2020-10-13 14:14:08,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:08,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:14:08,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321425482] [2020-10-13 14:14:08,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:14:08,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:08,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:14:08,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:14:08,294 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 9 states. [2020-10-13 14:14:08,781 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:14:12,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:12,040 INFO L93 Difference]: Finished difference Result 844 states and 1383 transitions. [2020-10-13 14:14:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 14:14:12,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-13 14:14:12,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:12,063 INFO L225 Difference]: With dead ends: 844 [2020-10-13 14:14:12,063 INFO L226 Difference]: Without dead ends: 678 [2020-10-13 14:14:12,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:14:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2020-10-13 14:14:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 390. [2020-10-13 14:14:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-10-13 14:14:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 486 transitions. [2020-10-13 14:14:12,151 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 486 transitions. Word has length 63 [2020-10-13 14:14:12,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:12,151 INFO L479 AbstractCegarLoop]: Abstraction has 390 states and 486 transitions. [2020-10-13 14:14:12,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:14:12,152 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 486 transitions. [2020-10-13 14:14:12,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 14:14:12,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:12,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:12,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:14:12,157 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash 804624401, now seen corresponding path program 1 times [2020-10-13 14:14:12,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:12,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091336186] [2020-10-13 14:14:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:12,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:13,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:17,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:17,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 14:14:17,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 14:14:17,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:14:17,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:17,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:14:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:14:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 14:14:17,727 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:17,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:17,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:17,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:17,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:17,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:17,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 14:14:17,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:17,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:17,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:14:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:17,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091336186] [2020-10-13 14:14:17,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:17,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:17,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370077561] [2020-10-13 14:14:17,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:17,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:17,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:17,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:17,789 INFO L87 Difference]: Start difference. First operand 390 states and 486 transitions. Second operand 7 states. [2020-10-13 14:14:18,335 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:14:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:20,403 INFO L93 Difference]: Finished difference Result 1508 states and 2024 transitions. [2020-10-13 14:14:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:20,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-10-13 14:14:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:20,419 INFO L225 Difference]: With dead ends: 1508 [2020-10-13 14:14:20,419 INFO L226 Difference]: Without dead ends: 1254 [2020-10-13 14:14:20,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2020-10-13 14:14:20,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 651. [2020-10-13 14:14:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-10-13 14:14:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 882 transitions. [2020-10-13 14:14:20,506 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 882 transitions. Word has length 63 [2020-10-13 14:14:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:20,507 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 882 transitions. [2020-10-13 14:14:20,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 882 transitions. [2020-10-13 14:14:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:20,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:20,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:20,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:14:20,514 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:20,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:20,515 INFO L82 PathProgramCache]: Analyzing trace with hash 711211391, now seen corresponding path program 1 times [2020-10-13 14:14:20,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:20,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425798125] [2020-10-13 14:14:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:20,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:20,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:25,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:25,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:25,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:14:25,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 14:14:25,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:14:25,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 14:14:25,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:25,987 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:25,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:25,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:26,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:26,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:26,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:26,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:14:26,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:26,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425798125] [2020-10-13 14:14:26,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:26,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:26,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129107653] [2020-10-13 14:14:26,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:26,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:26,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:26,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:26,030 INFO L87 Difference]: Start difference. First operand 651 states and 882 transitions. Second operand 7 states. [2020-10-13 14:14:26,354 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:14:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:28,518 INFO L93 Difference]: Finished difference Result 2654 states and 3760 transitions. [2020-10-13 14:14:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:28,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:14:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:28,534 INFO L225 Difference]: With dead ends: 2654 [2020-10-13 14:14:28,534 INFO L226 Difference]: Without dead ends: 2316 [2020-10-13 14:14:28,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2020-10-13 14:14:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1017. [2020-10-13 14:14:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1017 states. [2020-10-13 14:14:28,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1429 transitions. [2020-10-13 14:14:28,630 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1429 transitions. Word has length 64 [2020-10-13 14:14:28,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:28,633 INFO L479 AbstractCegarLoop]: Abstraction has 1017 states and 1429 transitions. [2020-10-13 14:14:28,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1429 transitions. [2020-10-13 14:14:28,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 14:14:28,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:28,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:28,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:14:28,641 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:28,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:28,642 INFO L82 PathProgramCache]: Analyzing trace with hash -461504103, now seen corresponding path program 1 times [2020-10-13 14:14:28,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:28,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101883603] [2020-10-13 14:14:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:28,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:28,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:30,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:30,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:30,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:31,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:31,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:33,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:33,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 14:14:33,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:14:33,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:14:33,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:33,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 14:14:33,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:33,996 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:33,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:34,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:34,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:34,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:34,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:34,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:14:34,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:34,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:34,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:34,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:34,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:34,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101883603] [2020-10-13 14:14:34,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:34,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:34,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198694667] [2020-10-13 14:14:34,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:34,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:34,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:34,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:34,032 INFO L87 Difference]: Start difference. First operand 1017 states and 1429 transitions. Second operand 7 states. [2020-10-13 14:14:34,364 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:14:36,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:36,508 INFO L93 Difference]: Finished difference Result 4770 states and 6936 transitions. [2020-10-13 14:14:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:36,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-10-13 14:14:36,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:36,540 INFO L225 Difference]: With dead ends: 4770 [2020-10-13 14:14:36,540 INFO L226 Difference]: Without dead ends: 4154 [2020-10-13 14:14:36,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:36,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2020-10-13 14:14:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 1798. [2020-10-13 14:14:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2020-10-13 14:14:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2595 transitions. [2020-10-13 14:14:36,758 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2595 transitions. Word has length 64 [2020-10-13 14:14:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:36,759 INFO L479 AbstractCegarLoop]: Abstraction has 1798 states and 2595 transitions. [2020-10-13 14:14:36,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2595 transitions. [2020-10-13 14:14:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:14:36,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:36,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:36,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:14:36,768 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:36,768 INFO L82 PathProgramCache]: Analyzing trace with hash 886737871, now seen corresponding path program 1 times [2020-10-13 14:14:36,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:36,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162704352] [2020-10-13 14:14:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:36,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:37,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:41,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:41,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:41,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:41,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:14:41,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:14:41,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:14:41,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 14:14:41,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:42,232 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:42,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:42,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:42,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:42,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 14:14:42,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:14:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:42,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162704352] [2020-10-13 14:14:42,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:42,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:42,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385867489] [2020-10-13 14:14:42,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:42,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:42,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:42,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:42,303 INFO L87 Difference]: Start difference. First operand 1798 states and 2595 transitions. Second operand 7 states. [2020-10-13 14:14:42,759 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:14:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:45,019 INFO L93 Difference]: Finished difference Result 5965 states and 8708 transitions. [2020-10-13 14:14:45,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:45,019 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 14:14:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:45,046 INFO L225 Difference]: With dead ends: 5965 [2020-10-13 14:14:45,046 INFO L226 Difference]: Without dead ends: 5125 [2020-10-13 14:14:45,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:45,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2020-10-13 14:14:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 2333. [2020-10-13 14:14:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2020-10-13 14:14:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 3394 transitions. [2020-10-13 14:14:45,233 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 3394 transitions. Word has length 65 [2020-10-13 14:14:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:45,233 INFO L479 AbstractCegarLoop]: Abstraction has 2333 states and 3394 transitions. [2020-10-13 14:14:45,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:45,234 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 3394 transitions. [2020-10-13 14:14:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:14:45,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:45,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:45,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:14:45,237 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:45,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2059453365, now seen corresponding path program 1 times [2020-10-13 14:14:45,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:45,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195706996] [2020-10-13 14:14:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:45,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:47,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:48,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:49,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:50,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:50,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:14:50,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:14:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:14:50,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:14:50,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:14:50,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:50,678 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:50,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:50,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:50,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:14:50,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:50,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:50,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195706996] [2020-10-13 14:14:50,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:50,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:50,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881590684] [2020-10-13 14:14:50,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:50,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:50,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:50,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:50,718 INFO L87 Difference]: Start difference. First operand 2333 states and 3394 transitions. Second operand 7 states. [2020-10-13 14:14:51,023 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:14:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:14:52,883 INFO L93 Difference]: Finished difference Result 6469 states and 9480 transitions. [2020-10-13 14:14:52,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:14:52,889 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 14:14:52,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:14:52,914 INFO L225 Difference]: With dead ends: 6469 [2020-10-13 14:14:52,915 INFO L226 Difference]: Without dead ends: 5650 [2020-10-13 14:14:52,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:14:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5650 states. [2020-10-13 14:14:53,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5650 to 2704. [2020-10-13 14:14:53,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-10-13 14:14:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3953 transitions. [2020-10-13 14:14:53,148 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3953 transitions. Word has length 65 [2020-10-13 14:14:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:14:53,149 INFO L479 AbstractCegarLoop]: Abstraction has 2704 states and 3953 transitions. [2020-10-13 14:14:53,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:14:53,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3953 transitions. [2020-10-13 14:14:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 14:14:53,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:14:53,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:14:53,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:14:53,153 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:14:53,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:14:53,153 INFO L82 PathProgramCache]: Analyzing trace with hash 956094724, now seen corresponding path program 1 times [2020-10-13 14:14:53,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:14:53,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958150700] [2020-10-13 14:14:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:14:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:54,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:55,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:58,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:58,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 14:14:58,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:14:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:14:58,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:14:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:14:58,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 14:14:58,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:58,516 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:14:58,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:14:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:14:58,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:14:58,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:14:58,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:14:58,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:14:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:14:58,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:14:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:14:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:14:58,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:14:58,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:14:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:14:58,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958150700] [2020-10-13 14:14:58,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:14:58,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:14:58,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090152903] [2020-10-13 14:14:58,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:14:58,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:14:58,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:14:58,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:14:58,553 INFO L87 Difference]: Start difference. First operand 2704 states and 3953 transitions. Second operand 7 states. [2020-10-13 14:14:58,845 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:15:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:00,960 INFO L93 Difference]: Finished difference Result 7085 states and 10398 transitions. [2020-10-13 14:15:00,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:15:00,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-13 14:15:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:00,982 INFO L225 Difference]: With dead ends: 7085 [2020-10-13 14:15:00,983 INFO L226 Difference]: Without dead ends: 5462 [2020-10-13 14:15:00,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-13 14:15:00,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2020-10-13 14:15:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 2425. [2020-10-13 14:15:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2425 states. [2020-10-13 14:15:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3533 transitions. [2020-10-13 14:15:01,218 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3533 transitions. Word has length 65 [2020-10-13 14:15:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:01,220 INFO L479 AbstractCegarLoop]: Abstraction has 2425 states and 3533 transitions. [2020-10-13 14:15:01,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:15:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3533 transitions. [2020-10-13 14:15:01,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:01,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:01,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:01,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:15:01,223 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:01,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1281970317, now seen corresponding path program 1 times [2020-10-13 14:15:01,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:01,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771342084] [2020-10-13 14:15:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:01,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:01,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:01,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:01,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:15:06,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:15:06,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:15:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:06,577 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:06,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:06,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:06,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:06,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:06,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:15:06,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:06,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:06,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:06,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771342084] [2020-10-13 14:15:06,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:06,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:06,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75897469] [2020-10-13 14:15:06,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:06,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:06,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:06,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:06,646 INFO L87 Difference]: Start difference. First operand 2425 states and 3533 transitions. Second operand 6 states. [2020-10-13 14:15:06,974 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-13 14:15:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:08,353 INFO L93 Difference]: Finished difference Result 4021 states and 5836 transitions. [2020-10-13 14:15:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:08,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:15:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:08,363 INFO L225 Difference]: With dead ends: 4021 [2020-10-13 14:15:08,363 INFO L226 Difference]: Without dead ends: 3133 [2020-10-13 14:15:08,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:15:08,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-13 14:15:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 2050. [2020-10-13 14:15:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-10-13 14:15:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2983 transitions. [2020-10-13 14:15:08,589 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2983 transitions. Word has length 66 [2020-10-13 14:15:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:08,590 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 2983 transitions. [2020-10-13 14:15:08,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:08,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2983 transitions. [2020-10-13 14:15:08,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:08,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:08,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:08,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:15:08,593 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:08,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:08,593 INFO L82 PathProgramCache]: Analyzing trace with hash -2142061232, now seen corresponding path program 1 times [2020-10-13 14:15:08,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:08,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388777762] [2020-10-13 14:15:08,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:09,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:11,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:12,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:12,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:13,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:13,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:15:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:15:13,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 14:15:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:13,933 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:13,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:13,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:13,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:13,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:13,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:15:13,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:13,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:13,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:13,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:13,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388777762] [2020-10-13 14:15:13,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:13,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:13,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980945916] [2020-10-13 14:15:13,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:13,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:13,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:13,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:13,977 INFO L87 Difference]: Start difference. First operand 2050 states and 2983 transitions. Second operand 6 states. [2020-10-13 14:15:14,293 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-13 14:15:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:15,589 INFO L93 Difference]: Finished difference Result 3369 states and 4881 transitions. [2020-10-13 14:15:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:15,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:15:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:15,595 INFO L225 Difference]: With dead ends: 3369 [2020-10-13 14:15:15,595 INFO L226 Difference]: Without dead ends: 1873 [2020-10-13 14:15:15,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:15:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2020-10-13 14:15:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1833. [2020-10-13 14:15:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2020-10-13 14:15:15,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2649 transitions. [2020-10-13 14:15:15,814 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2649 transitions. Word has length 66 [2020-10-13 14:15:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:15,814 INFO L479 AbstractCegarLoop]: Abstraction has 1833 states and 2649 transitions. [2020-10-13 14:15:15,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2649 transitions. [2020-10-13 14:15:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:15,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:15,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:15,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:15:15,817 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:15,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:15,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1048287760, now seen corresponding path program 1 times [2020-10-13 14:15:15,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:15,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597540799] [2020-10-13 14:15:15,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:18,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:20,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:20,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:20,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:15:20,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 14:15:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 14:15:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:21,126 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:21,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:21,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:21,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:21,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:21,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:15:21,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:21,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:21,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597540799] [2020-10-13 14:15:21,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:21,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:21,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122364618] [2020-10-13 14:15:21,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:21,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:21,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:21,162 INFO L87 Difference]: Start difference. First operand 1833 states and 2649 transitions. Second operand 6 states. [2020-10-13 14:15:21,499 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-13 14:15:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:22,612 INFO L93 Difference]: Finished difference Result 3116 states and 4539 transitions. [2020-10-13 14:15:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:22,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:15:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:22,616 INFO L225 Difference]: With dead ends: 3116 [2020-10-13 14:15:22,616 INFO L226 Difference]: Without dead ends: 1653 [2020-10-13 14:15:22,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:15:22,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-10-13 14:15:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1007. [2020-10-13 14:15:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-10-13 14:15:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1426 transitions. [2020-10-13 14:15:22,763 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1426 transitions. Word has length 66 [2020-10-13 14:15:22,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:22,764 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1426 transitions. [2020-10-13 14:15:22,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:22,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1426 transitions. [2020-10-13 14:15:22,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:22,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:22,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:22,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:15:22,766 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:22,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:22,766 INFO L82 PathProgramCache]: Analyzing trace with hash 307813232, now seen corresponding path program 1 times [2020-10-13 14:15:22,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:22,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558870330] [2020-10-13 14:15:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:22,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:27,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:27,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:27,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:15:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:15:27,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 14:15:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 14:15:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:15:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:28,170 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:28,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:28,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:28,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:28,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:28,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:15:28,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:28,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558870330] [2020-10-13 14:15:28,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:28,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 14:15:28,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584266944] [2020-10-13 14:15:28,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 14:15:28,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:28,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 14:15:28,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 14:15:28,196 INFO L87 Difference]: Start difference. First operand 1007 states and 1426 transitions. Second operand 9 states. [2020-10-13 14:15:28,517 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-13 14:15:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:30,006 INFO L93 Difference]: Finished difference Result 2649 states and 3839 transitions. [2020-10-13 14:15:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 14:15:30,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-10-13 14:15:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:30,011 INFO L225 Difference]: With dead ends: 2649 [2020-10-13 14:15:30,012 INFO L226 Difference]: Without dead ends: 2032 [2020-10-13 14:15:30,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-13 14:15:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2020-10-13 14:15:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1006. [2020-10-13 14:15:30,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-10-13 14:15:30,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1420 transitions. [2020-10-13 14:15:30,200 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1420 transitions. Word has length 66 [2020-10-13 14:15:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:30,200 INFO L479 AbstractCegarLoop]: Abstraction has 1006 states and 1420 transitions. [2020-10-13 14:15:30,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 14:15:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1420 transitions. [2020-10-13 14:15:30,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 14:15:30,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:30,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:30,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:15:30,203 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:30,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:30,203 INFO L82 PathProgramCache]: Analyzing trace with hash -77234929, now seen corresponding path program 1 times [2020-10-13 14:15:30,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:30,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513873987] [2020-10-13 14:15:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:32,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:35,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:35,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 14:15:35,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:15:35,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:15:35,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:15:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:15:35,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:15:35,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:35,559 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:35,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:35,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:35,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:35,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:35,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:15:35,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:15:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:15:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:35,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513873987] [2020-10-13 14:15:35,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:35,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:15:35,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027969782] [2020-10-13 14:15:35,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:15:35,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:35,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:15:35,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:15:35,602 INFO L87 Difference]: Start difference. First operand 1006 states and 1420 transitions. Second operand 6 states. [2020-10-13 14:15:36,189 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 225 [2020-10-13 14:15:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:37,179 INFO L93 Difference]: Finished difference Result 1717 states and 2443 transitions. [2020-10-13 14:15:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:15:37,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-13 14:15:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:37,182 INFO L225 Difference]: With dead ends: 1717 [2020-10-13 14:15:37,182 INFO L226 Difference]: Without dead ends: 911 [2020-10-13 14:15:37,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:15:37,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2020-10-13 14:15:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 548. [2020-10-13 14:15:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-10-13 14:15:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 745 transitions. [2020-10-13 14:15:37,307 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 745 transitions. Word has length 66 [2020-10-13 14:15:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:37,307 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 745 transitions. [2020-10-13 14:15:37,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:15:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 745 transitions. [2020-10-13 14:15:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:15:37,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:37,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:37,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:15:37,309 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:37,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1880551844, now seen corresponding path program 1 times [2020-10-13 14:15:37,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:37,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685496966] [2020-10-13 14:15:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:37,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:38,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:39,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:39,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:39,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:40,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:41,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:42,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:42,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:15:42,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:15:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:15:42,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:15:42,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:15:42,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:42,778 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:42,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:42,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:42,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:42,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:42,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:15:42,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:42,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:42,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:42,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685496966] [2020-10-13 14:15:42,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:42,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:42,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435229700] [2020-10-13 14:15:42,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:42,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:42,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:42,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:42,815 INFO L87 Difference]: Start difference. First operand 548 states and 745 transitions. Second operand 11 states. [2020-10-13 14:15:43,589 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 236 [2020-10-13 14:15:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:46,835 INFO L93 Difference]: Finished difference Result 3416 states and 4859 transitions. [2020-10-13 14:15:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:15:46,836 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:15:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:46,841 INFO L225 Difference]: With dead ends: 3416 [2020-10-13 14:15:46,841 INFO L226 Difference]: Without dead ends: 3411 [2020-10-13 14:15:46,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 14:15:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2020-10-13 14:15:46,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 548. [2020-10-13 14:15:46,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-10-13 14:15:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 743 transitions. [2020-10-13 14:15:46,980 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 743 transitions. Word has length 67 [2020-10-13 14:15:46,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:46,981 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 743 transitions. [2020-10-13 14:15:46,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:46,981 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 743 transitions. [2020-10-13 14:15:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:15:46,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:46,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:46,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:15:46,982 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:46,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1495503683, now seen corresponding path program 1 times [2020-10-13 14:15:46,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:46,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20430415] [2020-10-13 14:15:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:51,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:52,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:52,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:15:52,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:15:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 14:15:52,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:15:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:15:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:15:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:52,434 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:15:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:15:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:52,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:52,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:15:52,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:15:52,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:15:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:15:52,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:15:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:15:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:15:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:15:52,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:15:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:15:52,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20430415] [2020-10-13 14:15:52,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:15:52,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:15:52,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534148934] [2020-10-13 14:15:52,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:15:52,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:15:52,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:15:52,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:15:52,469 INFO L87 Difference]: Start difference. First operand 548 states and 743 transitions. Second operand 11 states. [2020-10-13 14:15:52,892 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-13 14:15:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:15:56,311 INFO L93 Difference]: Finished difference Result 2886 states and 4089 transitions. [2020-10-13 14:15:56,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 14:15:56,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:15:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:15:56,316 INFO L225 Difference]: With dead ends: 2886 [2020-10-13 14:15:56,316 INFO L226 Difference]: Without dead ends: 2869 [2020-10-13 14:15:56,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 14:15:56,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2020-10-13 14:15:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 548. [2020-10-13 14:15:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-10-13 14:15:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 741 transitions. [2020-10-13 14:15:56,469 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 741 transitions. Word has length 67 [2020-10-13 14:15:56,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:15:56,470 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 741 transitions. [2020-10-13 14:15:56,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:15:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 741 transitions. [2020-10-13 14:15:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:15:56,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:15:56,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:15:56,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:15:56,471 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:15:56,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:15:56,472 INFO L82 PathProgramCache]: Analyzing trace with hash 635711597, now seen corresponding path program 1 times [2020-10-13 14:15:56,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:15:56,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342831366] [2020-10-13 14:15:56,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:15:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:15:56,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:56,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:56,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:56,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:15:57,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:01,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:01,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:01,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:01,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:01,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:16:01,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:16:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:16:01,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:16:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:16:01,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:16:01,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:01,813 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:16:01,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:01,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:01,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:01,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:01,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:01,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:16:01,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:01,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:01,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342831366] [2020-10-13 14:16:01,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:01,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:16:01,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986826288] [2020-10-13 14:16:01,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:16:01,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:01,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:16:01,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:16:01,851 INFO L87 Difference]: Start difference. First operand 548 states and 741 transitions. Second operand 7 states. [2020-10-13 14:16:02,154 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-13 14:16:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:03,381 INFO L93 Difference]: Finished difference Result 1110 states and 1518 transitions. [2020-10-13 14:16:03,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:16:03,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-10-13 14:16:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:03,383 INFO L225 Difference]: With dead ends: 1110 [2020-10-13 14:16:03,383 INFO L226 Difference]: Without dead ends: 734 [2020-10-13 14:16:03,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2020-10-13 14:16:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 548. [2020-10-13 14:16:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-10-13 14:16:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 740 transitions. [2020-10-13 14:16:03,473 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 740 transitions. Word has length 67 [2020-10-13 14:16:03,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:03,473 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 740 transitions. [2020-10-13 14:16:03,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:16:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 740 transitions. [2020-10-13 14:16:03,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:16:03,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:03,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:16:03,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:16:03,475 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:03,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:03,475 INFO L82 PathProgramCache]: Analyzing trace with hash -216881066, now seen corresponding path program 1 times [2020-10-13 14:16:03,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:03,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933750643] [2020-10-13 14:16:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:03,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:16:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:16:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:16:08,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:16:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:16:08,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:16:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:08,863 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:16:08,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:08,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:08,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:08,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:08,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:16:08,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:08,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:08,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:08,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933750643] [2020-10-13 14:16:08,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:08,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:16:08,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122705180] [2020-10-13 14:16:08,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:16:08,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:08,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:16:08,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:16:08,893 INFO L87 Difference]: Start difference. First operand 548 states and 740 transitions. Second operand 10 states. [2020-10-13 14:16:09,201 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-13 14:16:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:10,633 INFO L93 Difference]: Finished difference Result 1460 states and 2063 transitions. [2020-10-13 14:16:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:10,633 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-13 14:16:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:10,636 INFO L225 Difference]: With dead ends: 1460 [2020-10-13 14:16:10,636 INFO L226 Difference]: Without dead ends: 1143 [2020-10-13 14:16:10,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:16:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2020-10-13 14:16:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 521. [2020-10-13 14:16:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-13 14:16:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 704 transitions. [2020-10-13 14:16:10,775 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 704 transitions. Word has length 67 [2020-10-13 14:16:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:10,776 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 704 transitions. [2020-10-13 14:16:10,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:16:10,776 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 704 transitions. [2020-10-13 14:16:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:16:10,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:10,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:16:10,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:16:10,778 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash -660837186, now seen corresponding path program 1 times [2020-10-13 14:16:10,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:10,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952601975] [2020-10-13 14:16:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:10,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:11,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:11,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:12,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:13,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:13,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:13,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:15,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:15,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:16:15,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 14:16:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 14:16:15,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:16:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:16:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:16,236 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:16:16,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:16,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:16,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:16,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:16,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:16:16,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:16,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:16,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:16,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:16,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952601975] [2020-10-13 14:16:16,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:16,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:16,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322838148] [2020-10-13 14:16:16,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:16,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:16,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:16,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:16,264 INFO L87 Difference]: Start difference. First operand 521 states and 704 transitions. Second operand 11 states. [2020-10-13 14:16:16,649 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 240 [2020-10-13 14:16:21,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:21,442 INFO L93 Difference]: Finished difference Result 4068 states and 5801 transitions. [2020-10-13 14:16:21,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 14:16:21,443 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 14:16:21,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:21,448 INFO L225 Difference]: With dead ends: 4068 [2020-10-13 14:16:21,448 INFO L226 Difference]: Without dead ends: 3773 [2020-10-13 14:16:21,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=291, Invalid=1115, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 14:16:21,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2020-10-13 14:16:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 521. [2020-10-13 14:16:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-13 14:16:21,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 703 transitions. [2020-10-13 14:16:21,643 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 703 transitions. Word has length 67 [2020-10-13 14:16:21,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:21,644 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 703 transitions. [2020-10-13 14:16:21,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 703 transitions. [2020-10-13 14:16:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 14:16:21,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:21,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:16:21,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:16:21,645 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1268319326, now seen corresponding path program 1 times [2020-10-13 14:16:21,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:21,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092446577] [2020-10-13 14:16:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:22,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:24,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:26,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:26,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 14:16:26,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:16:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:16:26,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:16:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 14:16:26,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:16:26,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:27,090 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:16:27,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:27,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:27,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:27,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:27,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:16:27,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:27,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092446577] [2020-10-13 14:16:27,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:27,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:16:27,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197364860] [2020-10-13 14:16:27,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:16:27,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:27,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:16:27,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:16:27,122 INFO L87 Difference]: Start difference. First operand 521 states and 703 transitions. Second operand 10 states. [2020-10-13 14:16:27,938 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 239 [2020-10-13 14:16:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:30,552 INFO L93 Difference]: Finished difference Result 1655 states and 2336 transitions. [2020-10-13 14:16:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 14:16:30,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-13 14:16:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:30,554 INFO L225 Difference]: With dead ends: 1655 [2020-10-13 14:16:30,555 INFO L226 Difference]: Without dead ends: 1327 [2020-10-13 14:16:30,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:16:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2020-10-13 14:16:30,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 521. [2020-10-13 14:16:30,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-13 14:16:30,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 702 transitions. [2020-10-13 14:16:30,654 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 702 transitions. Word has length 67 [2020-10-13 14:16:30,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:30,655 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 702 transitions. [2020-10-13 14:16:30,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:16:30,655 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 702 transitions. [2020-10-13 14:16:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:16:30,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:30,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:16:30,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:16:30,656 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:30,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:30,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1664493892, now seen corresponding path program 1 times [2020-10-13 14:16:30,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:30,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853046576] [2020-10-13 14:16:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:30,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:30,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:31,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:35,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:35,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:16:35,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:16:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 14:16:35,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:16:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:16:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:36,084 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:16:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:36,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:36,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:36,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:36,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:16:36,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:36,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:36,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:36,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853046576] [2020-10-13 14:16:36,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:36,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:36,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056717051] [2020-10-13 14:16:36,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:36,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:36,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:36,113 INFO L87 Difference]: Start difference. First operand 521 states and 702 transitions. Second operand 11 states. [2020-10-13 14:16:36,429 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-13 14:16:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:38,537 INFO L93 Difference]: Finished difference Result 2011 states and 2832 transitions. [2020-10-13 14:16:38,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:16:38,537 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-13 14:16:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:38,540 INFO L225 Difference]: With dead ends: 2011 [2020-10-13 14:16:38,540 INFO L226 Difference]: Without dead ends: 1715 [2020-10-13 14:16:38,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2020-10-13 14:16:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2020-10-13 14:16:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 511. [2020-10-13 14:16:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-13 14:16:38,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 687 transitions. [2020-10-13 14:16:38,702 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 687 transitions. Word has length 69 [2020-10-13 14:16:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:38,703 INFO L479 AbstractCegarLoop]: Abstraction has 511 states and 687 transitions. [2020-10-13 14:16:38,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:38,703 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 687 transitions. [2020-10-13 14:16:38,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 14:16:38,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:38,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:16:38,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 14:16:38,704 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:38,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:38,704 INFO L82 PathProgramCache]: Analyzing trace with hash 714738480, now seen corresponding path program 1 times [2020-10-13 14:16:38,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:38,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656358826] [2020-10-13 14:16:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:38,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:38,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:39,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:43,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:43,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 14:16:43,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:16:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:16:43,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 14:16:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 14:16:43,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 14:16:43,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:44,140 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:16:44,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:44,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:16:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:44,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656358826] [2020-10-13 14:16:44,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:44,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 14:16:44,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551837300] [2020-10-13 14:16:44,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 14:16:44,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:44,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 14:16:44,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-13 14:16:44,168 INFO L87 Difference]: Start difference. First operand 511 states and 687 transitions. Second operand 10 states. [2020-10-13 14:16:44,478 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2020-10-13 14:16:45,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:45,759 INFO L93 Difference]: Finished difference Result 1011 states and 1401 transitions. [2020-10-13 14:16:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:16:45,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-10-13 14:16:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:45,765 INFO L225 Difference]: With dead ends: 1011 [2020-10-13 14:16:45,765 INFO L226 Difference]: Without dead ends: 717 [2020-10-13 14:16:45,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-13 14:16:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2020-10-13 14:16:45,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 507. [2020-10-13 14:16:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-13 14:16:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 682 transitions. [2020-10-13 14:16:45,875 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 682 transitions. Word has length 69 [2020-10-13 14:16:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:45,875 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 682 transitions. [2020-10-13 14:16:45,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 14:16:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 682 transitions. [2020-10-13 14:16:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:16:45,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:45,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:16:45,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 14:16:45,876 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:45,876 INFO L82 PathProgramCache]: Analyzing trace with hash -994428397, now seen corresponding path program 1 times [2020-10-13 14:16:45,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:45,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122737541] [2020-10-13 14:16:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:45,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:45,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:46,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:46,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:47,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:47,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:47,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:47,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:50,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:50,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:16:50,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:16:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 14:16:50,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 14:16:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 14:16:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:51,460 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:16:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:16:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:51,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:51,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:16:51,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:16:51,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:16:51,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:51,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:16:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:16:51,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:16:51,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:16:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:16:51,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122737541] [2020-10-13 14:16:51,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:16:51,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:16:51,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060386018] [2020-10-13 14:16:51,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:16:51,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:16:51,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:16:51,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:16:51,512 INFO L87 Difference]: Start difference. First operand 507 states and 682 transitions. Second operand 11 states. [2020-10-13 14:16:52,099 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-13 14:16:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:16:54,362 INFO L93 Difference]: Finished difference Result 1834 states and 2564 transitions. [2020-10-13 14:16:54,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 14:16:54,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:16:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:16:54,365 INFO L225 Difference]: With dead ends: 1834 [2020-10-13 14:16:54,365 INFO L226 Difference]: Without dead ends: 1827 [2020-10-13 14:16:54,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2020-10-13 14:16:54,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2020-10-13 14:16:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 507. [2020-10-13 14:16:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-13 14:16:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 681 transitions. [2020-10-13 14:16:54,482 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 681 transitions. Word has length 70 [2020-10-13 14:16:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:16:54,483 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 681 transitions. [2020-10-13 14:16:54,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:16:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 681 transitions. [2020-10-13 14:16:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:16:54,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:16:54,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:16:54,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 14:16:54,484 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:16:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:16:54,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1808706380, now seen corresponding path program 1 times [2020-10-13 14:16:54,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:16:54,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561738985] [2020-10-13 14:16:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:16:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:16:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:54,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:54,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:55,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:56,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:16:59,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:16:59,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:16:59,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:16:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:16:59,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:16:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:16:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:16:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 14:16:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:00,025 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:00,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:00,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:00,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:00,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:00,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:00,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:17:00,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:00,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:00,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:00,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:17:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:00,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561738985] [2020-10-13 14:17:00,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:00,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:00,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285788853] [2020-10-13 14:17:00,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:00,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:00,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:00,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:00,088 INFO L87 Difference]: Start difference. First operand 507 states and 681 transitions. Second operand 11 states. [2020-10-13 14:17:00,536 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-13 14:17:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:03,182 INFO L93 Difference]: Finished difference Result 1507 states and 2104 transitions. [2020-10-13 14:17:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 14:17:03,184 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-10-13 14:17:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:03,185 INFO L225 Difference]: With dead ends: 1507 [2020-10-13 14:17:03,186 INFO L226 Difference]: Without dead ends: 1174 [2020-10-13 14:17:03,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-13 14:17:03,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-10-13 14:17:03,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 507. [2020-10-13 14:17:03,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-10-13 14:17:03,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 680 transitions. [2020-10-13 14:17:03,298 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 680 transitions. Word has length 70 [2020-10-13 14:17:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:03,298 INFO L479 AbstractCegarLoop]: Abstraction has 507 states and 680 transitions. [2020-10-13 14:17:03,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:03,298 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 680 transitions. [2020-10-13 14:17:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 14:17:03,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:03,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:03,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 14:17:03,299 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:03,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:03,299 INFO L82 PathProgramCache]: Analyzing trace with hash -372074893, now seen corresponding path program 1 times [2020-10-13 14:17:03,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:03,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270048132] [2020-10-13 14:17:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:03,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:08,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:08,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 14:17:08,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:17:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 14:17:08,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:17:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:17:08,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:17:08,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:08,653 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:08,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:08,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:08,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:08,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:08,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:08,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:17:08,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:08,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:08,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:08,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270048132] [2020-10-13 14:17:08,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:08,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:17:08,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058474308] [2020-10-13 14:17:08,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:17:08,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:08,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:17:08,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:17:08,684 INFO L87 Difference]: Start difference. First operand 507 states and 680 transitions. Second operand 8 states. [2020-10-13 14:17:09,009 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-13 14:17:09,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:10,000 INFO L93 Difference]: Finished difference Result 967 states and 1344 transitions. [2020-10-13 14:17:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 14:17:10,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 14:17:10,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:10,001 INFO L225 Difference]: With dead ends: 967 [2020-10-13 14:17:10,001 INFO L226 Difference]: Without dead ends: 638 [2020-10-13 14:17:10,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:17:10,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-10-13 14:17:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 468. [2020-10-13 14:17:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-10-13 14:17:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 632 transitions. [2020-10-13 14:17:10,107 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 632 transitions. Word has length 70 [2020-10-13 14:17:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:10,107 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 632 transitions. [2020-10-13 14:17:10,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:17:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 632 transitions. [2020-10-13 14:17:10,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:17:10,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:10,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:10,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 14:17:10,108 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:10,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1152479625, now seen corresponding path program 1 times [2020-10-13 14:17:10,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:10,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204729470] [2020-10-13 14:17:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:10,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:10,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:10,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:10,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:10,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:13,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:13,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:17:13,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 14:17:13,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3729 [2020-10-13 14:17:13,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 14:17:13,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 14:17:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:14,314 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:14,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:14,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:14,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:14,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:14,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:14,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:17:14,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:14,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:14,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:14,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204729470] [2020-10-13 14:17:14,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:14,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:14,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906871848] [2020-10-13 14:17:14,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:14,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:14,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:14,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:14,354 INFO L87 Difference]: Start difference. First operand 468 states and 632 transitions. Second operand 11 states. [2020-10-13 14:17:14,703 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-13 14:17:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:16,655 INFO L93 Difference]: Finished difference Result 1425 states and 2007 transitions. [2020-10-13 14:17:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:17:16,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-10-13 14:17:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:16,657 INFO L225 Difference]: With dead ends: 1425 [2020-10-13 14:17:16,657 INFO L226 Difference]: Without dead ends: 1102 [2020-10-13 14:17:16,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-10-13 14:17:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-10-13 14:17:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 459. [2020-10-13 14:17:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-13 14:17:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 618 transitions. [2020-10-13 14:17:16,777 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 618 transitions. Word has length 71 [2020-10-13 14:17:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:16,777 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 618 transitions. [2020-10-13 14:17:16,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 618 transitions. [2020-10-13 14:17:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 14:17:16,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:16,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:16,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 14:17:16,779 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:16,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:16,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2073984290, now seen corresponding path program 1 times [2020-10-13 14:17:16,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:16,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903490805] [2020-10-13 14:17:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:16,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:17,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:18,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:19,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:21,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:21,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 14:17:21,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 14:17:21,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 14:17:21,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:17:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:17:21,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 14:17:21,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:22,138 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:22,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:22,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:22,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:22,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:17:22,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:22,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:22,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903490805] [2020-10-13 14:17:22,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:22,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:17:22,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189557887] [2020-10-13 14:17:22,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:17:22,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:22,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:17:22,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:17:22,169 INFO L87 Difference]: Start difference. First operand 459 states and 618 transitions. Second operand 8 states. [2020-10-13 14:17:22,856 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 232 [2020-10-13 14:17:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:24,423 INFO L93 Difference]: Finished difference Result 956 states and 1326 transitions. [2020-10-13 14:17:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 14:17:24,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-10-13 14:17:24,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:24,425 INFO L225 Difference]: With dead ends: 956 [2020-10-13 14:17:24,425 INFO L226 Difference]: Without dead ends: 623 [2020-10-13 14:17:24,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-13 14:17:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-10-13 14:17:24,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 459. [2020-10-13 14:17:24,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-10-13 14:17:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 617 transitions. [2020-10-13 14:17:24,559 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 617 transitions. Word has length 71 [2020-10-13 14:17:24,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:24,559 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 617 transitions. [2020-10-13 14:17:24,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 14:17:24,559 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 617 transitions. [2020-10-13 14:17:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:17:24,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:24,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:24,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 14:17:24,561 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:24,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1227602769, now seen corresponding path program 1 times [2020-10-13 14:17:24,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:24,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89340315] [2020-10-13 14:17:24,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:24,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:25,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:26,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:17:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 14:17:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-10-13 14:17:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:17:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 14:17:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:17:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:26,688 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:26,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:26,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:26,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:26,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:26,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:17:26,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:26,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:26,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:26,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:26,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89340315] [2020-10-13 14:17:26,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:26,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:17:26,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782744733] [2020-10-13 14:17:26,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:17:26,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:26,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:17:26,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:17:26,717 INFO L87 Difference]: Start difference. First operand 459 states and 617 transitions. Second operand 12 states. [2020-10-13 14:17:27,099 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-13 14:17:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:30,400 INFO L93 Difference]: Finished difference Result 1993 states and 2832 transitions. [2020-10-13 14:17:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:17:30,400 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-13 14:17:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:30,402 INFO L225 Difference]: With dead ends: 1993 [2020-10-13 14:17:30,402 INFO L226 Difference]: Without dead ends: 1659 [2020-10-13 14:17:30,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:17:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-10-13 14:17:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 467. [2020-10-13 14:17:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-13 14:17:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 625 transitions. [2020-10-13 14:17:30,532 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 625 transitions. Word has length 72 [2020-10-13 14:17:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:30,532 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 625 transitions. [2020-10-13 14:17:30,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:17:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 625 transitions. [2020-10-13 14:17:30,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:17:30,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:30,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:30,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 14:17:30,534 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1518799007, now seen corresponding path program 1 times [2020-10-13 14:17:30,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:30,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759621292] [2020-10-13 14:17:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:30,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:31,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:31,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:17:31,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 14:17:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-13 14:17:31,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 14:17:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:17:31,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 14:17:31,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:32,348 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:32,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:32,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:32,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:32,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 14:17:32,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:32,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759621292] [2020-10-13 14:17:32,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:32,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 14:17:32,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979303477] [2020-10-13 14:17:32,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 14:17:32,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 14:17:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 14:17:32,397 INFO L87 Difference]: Start difference. First operand 467 states and 625 transitions. Second operand 12 states. [2020-10-13 14:17:32,711 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 220 [2020-10-13 14:17:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:34,310 INFO L93 Difference]: Finished difference Result 964 states and 1332 transitions. [2020-10-13 14:17:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 14:17:34,311 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-10-13 14:17:34,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:34,312 INFO L225 Difference]: With dead ends: 964 [2020-10-13 14:17:34,312 INFO L226 Difference]: Without dead ends: 960 [2020-10-13 14:17:34,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-13 14:17:34,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2020-10-13 14:17:34,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 473. [2020-10-13 14:17:34,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-13 14:17:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 633 transitions. [2020-10-13 14:17:34,430 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 633 transitions. Word has length 72 [2020-10-13 14:17:34,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:34,430 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 633 transitions. [2020-10-13 14:17:34,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 14:17:34,430 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 633 transitions. [2020-10-13 14:17:34,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 14:17:34,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:34,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:34,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 14:17:34,431 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:34,431 INFO L82 PathProgramCache]: Analyzing trace with hash -163527607, now seen corresponding path program 1 times [2020-10-13 14:17:34,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:34,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138591658] [2020-10-13 14:17:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:34,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:34,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:34,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:35,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:35,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:36,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:36,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:36,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:36,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:37,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:39,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:39,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:39,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 14:17:39,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:17:39,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-13 14:17:39,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 14:17:39,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 14:17:39,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:17:39,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:40,017 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:40,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:40,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:40,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:40,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:17:40,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:40,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:40,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138591658] [2020-10-13 14:17:40,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:40,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 14:17:40,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677953381] [2020-10-13 14:17:40,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 14:17:40,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:40,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 14:17:40,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 14:17:40,055 INFO L87 Difference]: Start difference. First operand 473 states and 633 transitions. Second operand 11 states. [2020-10-13 14:17:40,383 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 219 [2020-10-13 14:17:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:17:42,564 INFO L93 Difference]: Finished difference Result 1783 states and 2512 transitions. [2020-10-13 14:17:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 14:17:42,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-10-13 14:17:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:17:42,566 INFO L225 Difference]: With dead ends: 1783 [2020-10-13 14:17:42,567 INFO L226 Difference]: Without dead ends: 1482 [2020-10-13 14:17:42,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2020-10-13 14:17:42,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-10-13 14:17:42,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 462. [2020-10-13 14:17:42,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-13 14:17:42,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 620 transitions. [2020-10-13 14:17:42,694 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 620 transitions. Word has length 72 [2020-10-13 14:17:42,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:17:42,695 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 620 transitions. [2020-10-13 14:17:42,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 14:17:42,695 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 620 transitions. [2020-10-13 14:17:42,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 14:17:42,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:17:42,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:17:42,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 14:17:42,696 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:17:42,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:17:42,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1360180715, now seen corresponding path program 1 times [2020-10-13 14:17:42,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:17:42,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560471873] [2020-10-13 14:17:42,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:17:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:42,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:42,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:43,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:44,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 14:17:44,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 14:17:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-13 14:17:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 14:17:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:17:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-13 14:17:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:44,480 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-13 14:17:44,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:17:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:17:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:17:44,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:17:44,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:17:44,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:17:44,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 14:17:44,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:17:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:17:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:17:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:17:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:17:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:17:44,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560471873] [2020-10-13 14:17:44,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:17:44,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 14:17:44,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095082306] [2020-10-13 14:17:44,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 14:17:44,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:17:44,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 14:17:44,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:17:44,508 INFO L87 Difference]: Start difference. First operand 462 states and 620 transitions. Second operand 8 states. [2020-10-13 14:17:44,884 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 229