/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:54:30,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:54:30,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:54:30,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:54:30,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:54:30,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:54:30,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:54:30,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:54:30,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:54:30,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:54:30,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:54:30,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:54:30,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:54:30,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:54:30,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:54:30,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:54:30,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:54:30,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:54:30,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:54:30,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:54:30,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:54:30,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:54:30,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:54:30,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:54:30,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:54:30,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:54:30,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:54:30,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:54:30,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:54:30,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:54:30,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:54:30,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:54:30,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:54:30,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:54:30,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:54:30,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:54:30,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:54:30,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:54:30,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:54:30,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:54:30,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:54:30,668 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 [2020-10-14 08:54:30,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:54:30,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:54:30,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:54:30,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:54:30,692 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:54:30,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:54:30,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:54:30,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:54:30,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:54:30,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:54:30,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:54:30,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:54:30,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:54:30,694 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:54:30,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:54:30,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:54:30,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:54:30,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:54:30,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:54:30,695 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:54:30,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:54:30,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:54:30,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:54:30,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:54:30,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:54:30,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:54:30,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:54:30,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:54:30,697 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:54:30,698 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:54:31,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:54:31,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:54:31,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:54:31,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:54:31,068 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:54:31,069 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 08:54:31,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69502c9b/36e9d000a2ca41b89f1d18cd7b21ffaf/FLAG494b37026 [2020-10-14 08:54:31,674 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:54:31,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 08:54:31,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69502c9b/36e9d000a2ca41b89f1d18cd7b21ffaf/FLAG494b37026 [2020-10-14 08:54:31,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a69502c9b/36e9d000a2ca41b89f1d18cd7b21ffaf [2020-10-14 08:54:31,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:54:31,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:54:31,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:54:31,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:54:31,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:54:31,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:54:31" (1/1) ... [2020-10-14 08:54:31,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c05dbbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:31, skipping insertion in model container [2020-10-14 08:54:31,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:54:31" (1/1) ... [2020-10-14 08:54:32,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:54:32,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:54:32,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:54:32,584 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:54:32,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:54:32,721 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:54:32,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32 WrapperNode [2020-10-14 08:54:32,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:54:32,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:54:32,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:54:32,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:54:32,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (1/1) ... [2020-10-14 08:54:32,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (1/1) ... [2020-10-14 08:54:32,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (1/1) ... [2020-10-14 08:54:32,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (1/1) ... [2020-10-14 08:54:32,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (1/1) ... [2020-10-14 08:54:32,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (1/1) ... [2020-10-14 08:54:32,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (1/1) ... [2020-10-14 08:54:32,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:54:32,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:54:32,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:54:32,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:54:32,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (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 [2020-10-14 08:54:32,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:54:32,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:54:32,893 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:54:32,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:54:32,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:54:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:54:32,894 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:54:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:54:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:54:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:54:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:54:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:54:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:54:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:54:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:54:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:54:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:54:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:54:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:54:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:54:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:54:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:54:32,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:54:33,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:54:33,785 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:54:33,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:54:33 BoogieIcfgContainer [2020-10-14 08:54:33,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:54:33,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:54:33,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:54:33,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:54:33,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:54:31" (1/3) ... [2020-10-14 08:54:33,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435d9e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:54:33, skipping insertion in model container [2020-10-14 08:54:33,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:54:32" (2/3) ... [2020-10-14 08:54:33,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435d9e0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:54:33, skipping insertion in model container [2020-10-14 08:54:33,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:54:33" (3/3) ... [2020-10-14 08:54:33,816 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-10-14 08:54:33,827 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:54:33,836 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:54:33,851 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:54:33,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:54:33,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:54:33,880 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:54:33,880 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:54:33,880 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:54:33,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:54:33,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:54:33,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:54:33,904 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-10-14 08:54:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 08:54:33,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:33,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:54:33,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash -541697796, now seen corresponding path program 1 times [2020-10-14 08:54:33,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:33,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482621736] [2020-10-14 08:54:33,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:34,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:34,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:35,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:35,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:36,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:36,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:39,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:39,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 08:54:39,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:54:39,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:54:39,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:39,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:54:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:54:39,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:54:39,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 08:54:39,729 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:54:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:39,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:39,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:39,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:39,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 08:54:39,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:39,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:39,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:39,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:39,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:54:39,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:54:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:54:39,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482621736] [2020-10-14 08:54:39,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:39,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:54:39,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992474489] [2020-10-14 08:54:39,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:54:39,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:39,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:54:39,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:54:39,866 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 6 states. [2020-10-14 08:54:40,154 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:54:41,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:41,279 INFO L93 Difference]: Finished difference Result 392 states and 650 transitions. [2020-10-14 08:54:41,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:54:41,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-14 08:54:41,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:41,296 INFO L225 Difference]: With dead ends: 392 [2020-10-14 08:54:41,296 INFO L226 Difference]: Without dead ends: 260 [2020-10-14 08:54:41,300 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 [2020-10-14 08:54:41,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-14 08:54:41,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2020-10-14 08:54:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-14 08:54:41,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 368 transitions. [2020-10-14 08:54:41,367 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 368 transitions. Word has length 95 [2020-10-14 08:54:41,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:41,368 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 368 transitions. [2020-10-14 08:54:41,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:54:41,369 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 368 transitions. [2020-10-14 08:54:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 08:54:41,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:41,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:54:41,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:54:41,373 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:41,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:41,374 INFO L82 PathProgramCache]: Analyzing trace with hash 310581276, now seen corresponding path program 1 times [2020-10-14 08:54:41,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:41,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566520110] [2020-10-14 08:54:41,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:42,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:42,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:46,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:46,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 08:54:46,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:54:46,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:54:46,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:46,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:46,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:54:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:54:46,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 08:54:46,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 08:54:46,855 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:54:46,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:46,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:46,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:46,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:46,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 08:54:46,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:46,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:46,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:54:46,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:54:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:54:47,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566520110] [2020-10-14 08:54:47,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:47,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:54:47,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662741911] [2020-10-14 08:54:47,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:54:47,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:47,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:54:47,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:54:47,035 INFO L87 Difference]: Start difference. First operand 258 states and 368 transitions. Second operand 6 states. [2020-10-14 08:54:47,342 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:54:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:48,194 INFO L93 Difference]: Finished difference Result 584 states and 878 transitions. [2020-10-14 08:54:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:54:48,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-14 08:54:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:48,203 INFO L225 Difference]: With dead ends: 584 [2020-10-14 08:54:48,203 INFO L226 Difference]: Without dead ends: 397 [2020-10-14 08:54:48,207 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 [2020-10-14 08:54:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-14 08:54:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 395. [2020-10-14 08:54:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-14 08:54:48,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 582 transitions. [2020-10-14 08:54:48,285 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 582 transitions. Word has length 96 [2020-10-14 08:54:48,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:48,285 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 582 transitions. [2020-10-14 08:54:48,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:54:48,286 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 582 transitions. [2020-10-14 08:54:48,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:54:48,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:48,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:54:48,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:54:48,289 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:48,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:48,289 INFO L82 PathProgramCache]: Analyzing trace with hash -706667812, now seen corresponding path program 1 times [2020-10-14 08:54:48,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:48,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969548797] [2020-10-14 08:54:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:48,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:48,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:49,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:49,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:53,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:53,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:54:53,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:54:53,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:54:53,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:53,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:54:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:54:53,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 08:54:53,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:54:53,561 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:54:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:53,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:53,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:53,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:53,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 08:54:53,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:53,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:54:53,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:54:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:54:53,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969548797] [2020-10-14 08:54:53,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:53,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:54:53,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044865331] [2020-10-14 08:54:53,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:54:53,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:53,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:54:53,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:54:53,655 INFO L87 Difference]: Start difference. First operand 395 states and 582 transitions. Second operand 6 states. [2020-10-14 08:54:53,879 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:54:54,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:54,572 INFO L93 Difference]: Finished difference Result 723 states and 1093 transitions. [2020-10-14 08:54:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:54:54,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:54:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:54,576 INFO L225 Difference]: With dead ends: 723 [2020-10-14 08:54:54,577 INFO L226 Difference]: Without dead ends: 395 [2020-10-14 08:54:54,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:54:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-10-14 08:54:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2020-10-14 08:54:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-14 08:54:54,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 577 transitions. [2020-10-14 08:54:54,617 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 577 transitions. Word has length 97 [2020-10-14 08:54:54,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:54,618 INFO L479 AbstractCegarLoop]: Abstraction has 395 states and 577 transitions. [2020-10-14 08:54:54,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:54:54,618 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 577 transitions. [2020-10-14 08:54:54,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 08:54:54,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:54,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:54:54,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:54:54,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:54,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:54,635 INFO L82 PathProgramCache]: Analyzing trace with hash 157096429, now seen corresponding path program 1 times [2020-10-14 08:54:54,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:54,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443172610] [2020-10-14 08:54:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:54,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:54,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:54,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:54,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:55,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:59,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:59,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 08:54:59,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:54:59,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:54:59,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:59,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:54:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:54:59,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:54:59,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:59,952 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:54:59,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:59,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:59,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:59,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 08:54:59,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:59,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:54:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:00,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443172610] [2020-10-14 08:55:00,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:00,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:55:00,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979340023] [2020-10-14 08:55:00,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:00,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:00,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:00,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:00,035 INFO L87 Difference]: Start difference. First operand 395 states and 577 transitions. Second operand 6 states. [2020-10-14 08:55:00,321 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:55:01,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:01,181 INFO L93 Difference]: Finished difference Result 1048 states and 1583 transitions. [2020-10-14 08:55:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:01,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-14 08:55:01,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:01,186 INFO L225 Difference]: With dead ends: 1048 [2020-10-14 08:55:01,186 INFO L226 Difference]: Without dead ends: 704 [2020-10-14 08:55:01,187 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 [2020-10-14 08:55:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2020-10-14 08:55:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 702. [2020-10-14 08:55:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-10-14 08:55:01,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1052 transitions. [2020-10-14 08:55:01,231 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1052 transitions. Word has length 98 [2020-10-14 08:55:01,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:01,231 INFO L479 AbstractCegarLoop]: Abstraction has 702 states and 1052 transitions. [2020-10-14 08:55:01,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:01,231 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1052 transitions. [2020-10-14 08:55:01,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 08:55:01,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:01,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:01,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:55:01,234 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:01,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1197740734, now seen corresponding path program 1 times [2020-10-14 08:55:01,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:01,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812769876] [2020-10-14 08:55:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:03,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:05,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:06,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:06,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 08:55:06,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:55:06,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:55:06,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:06,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:55:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:55:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 08:55:06,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:06,512 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:06,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:06,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:06,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:06,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:06,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:06,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 08:55:06,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:06,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:06,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:55:06,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:06,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:06,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812769876] [2020-10-14 08:55:06,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:06,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:55:06,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082749807] [2020-10-14 08:55:06,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:06,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:06,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:06,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:06,568 INFO L87 Difference]: Start difference. First operand 702 states and 1052 transitions. Second operand 6 states. [2020-10-14 08:55:06,775 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-14 08:55:07,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:07,647 INFO L93 Difference]: Finished difference Result 1937 states and 2960 transitions. [2020-10-14 08:55:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:07,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-14 08:55:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:07,656 INFO L225 Difference]: With dead ends: 1937 [2020-10-14 08:55:07,656 INFO L226 Difference]: Without dead ends: 1294 [2020-10-14 08:55:07,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:55:07,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-10-14 08:55:07,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1292. [2020-10-14 08:55:07,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-14 08:55:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1959 transitions. [2020-10-14 08:55:07,743 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1959 transitions. Word has length 99 [2020-10-14 08:55:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:07,744 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1959 transitions. [2020-10-14 08:55:07,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:07,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1959 transitions. [2020-10-14 08:55:07,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:55:07,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:07,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:07,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:55:07,746 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 634900973, now seen corresponding path program 1 times [2020-10-14 08:55:07,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:07,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143652141] [2020-10-14 08:55:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:07,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:07,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:08,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:09,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:12,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:12,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:12,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:55:12,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:55:12,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5093 [2020-10-14 08:55:12,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:12,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:55:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:55:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 08:55:12,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:13,116 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:13,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:13,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:13,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:13,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:55:13,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:13,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:55:13,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:13,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143652141] [2020-10-14 08:55:13,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:13,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:55:13,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158761112] [2020-10-14 08:55:13,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:13,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:13,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:13,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:13,172 INFO L87 Difference]: Start difference. First operand 1292 states and 1959 transitions. Second operand 6 states. [2020-10-14 08:55:13,372 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:55:14,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:14,141 INFO L93 Difference]: Finished difference Result 2529 states and 3862 transitions. [2020-10-14 08:55:14,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:14,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-14 08:55:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:14,149 INFO L225 Difference]: With dead ends: 2529 [2020-10-14 08:55:14,149 INFO L226 Difference]: Without dead ends: 1292 [2020-10-14 08:55:14,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:55:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2020-10-14 08:55:14,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2020-10-14 08:55:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1292 states. [2020-10-14 08:55:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1942 transitions. [2020-10-14 08:55:14,234 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1942 transitions. Word has length 100 [2020-10-14 08:55:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:14,235 INFO L479 AbstractCegarLoop]: Abstraction has 1292 states and 1942 transitions. [2020-10-14 08:55:14,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:14,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1942 transitions. [2020-10-14 08:55:14,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:55:14,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:14,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:14,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:55:14,237 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:14,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:14,238 INFO L82 PathProgramCache]: Analyzing trace with hash 380142191, now seen corresponding path program 1 times [2020-10-14 08:55:14,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:14,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341125505] [2020-10-14 08:55:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:14,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:14,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:15,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:16,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:19,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:19,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:55:19,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:55:19,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:55:19,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:19,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:19,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:19,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 08:55:19,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 08:55:19,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:19,461 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:19,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:19,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:19,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:19,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:19,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:55:19,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:19,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:19,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:19,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:19,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341125505] [2020-10-14 08:55:19,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:19,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:19,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317557124] [2020-10-14 08:55:19,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:19,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:19,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:19,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:19,498 INFO L87 Difference]: Start difference. First operand 1292 states and 1942 transitions. Second operand 4 states. [2020-10-14 08:55:19,682 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:55:20,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:20,635 INFO L93 Difference]: Finished difference Result 3507 states and 5312 transitions. [2020-10-14 08:55:20,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:55:20,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 08:55:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:20,650 INFO L225 Difference]: With dead ends: 3507 [2020-10-14 08:55:20,651 INFO L226 Difference]: Without dead ends: 2433 [2020-10-14 08:55:20,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:55:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2020-10-14 08:55:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2431. [2020-10-14 08:55:20,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2431 states. [2020-10-14 08:55:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 3646 transitions. [2020-10-14 08:55:20,813 INFO L78 Accepts]: Start accepts. Automaton has 2431 states and 3646 transitions. Word has length 101 [2020-10-14 08:55:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:20,813 INFO L479 AbstractCegarLoop]: Abstraction has 2431 states and 3646 transitions. [2020-10-14 08:55:20,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:20,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2431 states and 3646 transitions. [2020-10-14 08:55:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:55:20,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:20,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:20,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:55:20,816 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:20,817 INFO L82 PathProgramCache]: Analyzing trace with hash -517178705, now seen corresponding path program 1 times [2020-10-14 08:55:20,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:20,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037251491] [2020-10-14 08:55:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:20,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:20,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:22,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:24,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:24,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:25,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:25,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:55:25,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:55:25,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:55:25,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:25,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:25,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:55:25,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:55:25,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 08:55:25,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:26,099 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:26,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:26,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:26,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:26,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:26,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:26,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:55:26,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:26,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:26,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:26,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:55:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:26,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037251491] [2020-10-14 08:55:26,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:26,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:55:26,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308198980] [2020-10-14 08:55:26,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:26,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:26,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:26,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:26,148 INFO L87 Difference]: Start difference. First operand 2431 states and 3646 transitions. Second operand 6 states. [2020-10-14 08:55:26,339 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:55:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:27,400 INFO L93 Difference]: Finished difference Result 6492 states and 9785 transitions. [2020-10-14 08:55:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:27,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:55:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:27,419 INFO L225 Difference]: With dead ends: 6492 [2020-10-14 08:55:27,419 INFO L226 Difference]: Without dead ends: 4410 [2020-10-14 08:55:27,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:55:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2020-10-14 08:55:27,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 3498. [2020-10-14 08:55:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3498 states. [2020-10-14 08:55:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 5270 transitions. [2020-10-14 08:55:27,668 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 5270 transitions. Word has length 103 [2020-10-14 08:55:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:27,669 INFO L479 AbstractCegarLoop]: Abstraction has 3498 states and 5270 transitions. [2020-10-14 08:55:27,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 5270 transitions. [2020-10-14 08:55:27,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:55:27,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:27,672 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:27,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:55:27,673 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:27,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:27,673 INFO L82 PathProgramCache]: Analyzing trace with hash -659708050, now seen corresponding path program 1 times [2020-10-14 08:55:27,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:27,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072135048] [2020-10-14 08:55:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:27,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:28,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:31,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:32,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:32,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:55:32,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:55:32,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:55:32,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:32,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:55:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:55:32,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 08:55:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:32,914 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:32,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:32,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:32,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:32,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:32,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:32,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:55:32,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:32,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:32,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:32,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:32,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072135048] [2020-10-14 08:55:32,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:32,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:55:32,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805295947] [2020-10-14 08:55:32,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:32,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:32,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:32,959 INFO L87 Difference]: Start difference. First operand 3498 states and 5270 transitions. Second operand 6 states. [2020-10-14 08:55:33,170 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:55:34,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:34,081 INFO L93 Difference]: Finished difference Result 10132 states and 15289 transitions. [2020-10-14 08:55:34,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:34,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:55:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:34,113 INFO L225 Difference]: With dead ends: 10132 [2020-10-14 08:55:34,113 INFO L226 Difference]: Without dead ends: 6978 [2020-10-14 08:55:34,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:55:34,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2020-10-14 08:55:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 5758. [2020-10-14 08:55:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5758 states. [2020-10-14 08:55:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5758 states to 5758 states and 8710 transitions. [2020-10-14 08:55:34,515 INFO L78 Accepts]: Start accepts. Automaton has 5758 states and 8710 transitions. Word has length 103 [2020-10-14 08:55:34,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:34,515 INFO L479 AbstractCegarLoop]: Abstraction has 5758 states and 8710 transitions. [2020-10-14 08:55:34,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:34,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5758 states and 8710 transitions. [2020-10-14 08:55:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:55:34,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:34,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:34,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:55:34,519 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:34,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:34,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1540426961, now seen corresponding path program 1 times [2020-10-14 08:55:34,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:34,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231962015] [2020-10-14 08:55:34,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:34,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:34,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:36,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:38,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:39,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:39,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:39,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:55:39,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:55:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:55:39,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:39,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 08:55:39,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 08:55:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:39,797 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:39,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:39,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:39,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:55:39,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:39,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:39,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:39,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:39,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231962015] [2020-10-14 08:55:39,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:39,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:39,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467746308] [2020-10-14 08:55:39,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:39,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:39,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:39,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:39,831 INFO L87 Difference]: Start difference. First operand 5758 states and 8710 transitions. Second operand 4 states. [2020-10-14 08:55:40,021 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:55:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:40,877 INFO L93 Difference]: Finished difference Result 12130 states and 18392 transitions. [2020-10-14 08:55:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:55:40,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:55:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:40,903 INFO L225 Difference]: With dead ends: 12130 [2020-10-14 08:55:40,904 INFO L226 Difference]: Without dead ends: 6832 [2020-10-14 08:55:40,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:55:40,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2020-10-14 08:55:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6830. [2020-10-14 08:55:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6830 states. [2020-10-14 08:55:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6830 states to 6830 states and 10310 transitions. [2020-10-14 08:55:41,238 INFO L78 Accepts]: Start accepts. Automaton has 6830 states and 10310 transitions. Word has length 103 [2020-10-14 08:55:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:41,239 INFO L479 AbstractCegarLoop]: Abstraction has 6830 states and 10310 transitions. [2020-10-14 08:55:41,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6830 states and 10310 transitions. [2020-10-14 08:55:41,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:55:41,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:41,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:41,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:55:41,242 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:41,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:41,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1299209234, now seen corresponding path program 1 times [2020-10-14 08:55:41,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:41,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033584892] [2020-10-14 08:55:41,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:41,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:41,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:41,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:43,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:43,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:44,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:46,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:46,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:55:46,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:55:46,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:55:46,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:46,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 08:55:46,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:55:46,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:46,452 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:46,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:46,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:46,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:46,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:55:46,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:46,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:46,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033584892] [2020-10-14 08:55:46,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:46,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:46,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662432460] [2020-10-14 08:55:46,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:46,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:46,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:46,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:46,475 INFO L87 Difference]: Start difference. First operand 6830 states and 10310 transitions. Second operand 4 states. [2020-10-14 08:55:47,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:47,658 INFO L93 Difference]: Finished difference Result 18962 states and 28520 transitions. [2020-10-14 08:55:47,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:55:47,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:55:47,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:47,690 INFO L225 Difference]: With dead ends: 18962 [2020-10-14 08:55:47,690 INFO L226 Difference]: Without dead ends: 12592 [2020-10-14 08:55:47,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:47,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12592 states. [2020-10-14 08:55:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12592 to 12590. [2020-10-14 08:55:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12590 states. [2020-10-14 08:55:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12590 states to 12590 states and 18710 transitions. [2020-10-14 08:55:48,353 INFO L78 Accepts]: Start accepts. Automaton has 12590 states and 18710 transitions. Word has length 103 [2020-10-14 08:55:48,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:48,354 INFO L479 AbstractCegarLoop]: Abstraction has 12590 states and 18710 transitions. [2020-10-14 08:55:48,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:48,354 INFO L276 IsEmpty]: Start isEmpty. Operand 12590 states and 18710 transitions. [2020-10-14 08:55:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:55:48,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:48,364 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:48,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:55:48,365 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:48,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:48,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2133083944, now seen corresponding path program 1 times [2020-10-14 08:55:48,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:48,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16693369] [2020-10-14 08:55:48,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:48,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:48,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:48,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:50,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:51,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:51,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:53,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:53,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:55:53,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:55:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:55:53,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:53,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:55:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 08:55:53,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 08:55:53,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:53,595 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:55:53,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:53,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:53,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:53,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:53,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:55:53,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:53,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:53,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:55:53,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16693369] [2020-10-14 08:55:53,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:53,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:55:53,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750945851] [2020-10-14 08:55:53,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:53,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:53,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:53,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:53,626 INFO L87 Difference]: Start difference. First operand 12590 states and 18710 transitions. Second operand 6 states. [2020-10-14 08:55:53,842 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:55:55,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:55,360 INFO L93 Difference]: Finished difference Result 28484 states and 42265 transitions. [2020-10-14 08:55:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:55,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:55:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:55,401 INFO L225 Difference]: With dead ends: 28484 [2020-10-14 08:55:55,401 INFO L226 Difference]: Without dead ends: 16354 [2020-10-14 08:55:55,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:55:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16354 states. [2020-10-14 08:55:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16354 to 14630. [2020-10-14 08:55:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14630 states. [2020-10-14 08:55:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14630 states to 14630 states and 21742 transitions. [2020-10-14 08:55:56,330 INFO L78 Accepts]: Start accepts. Automaton has 14630 states and 21742 transitions. Word has length 103 [2020-10-14 08:55:56,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:56,331 INFO L479 AbstractCegarLoop]: Abstraction has 14630 states and 21742 transitions. [2020-10-14 08:55:56,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:56,331 INFO L276 IsEmpty]: Start isEmpty. Operand 14630 states and 21742 transitions. [2020-10-14 08:55:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:55:56,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:56,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:55:56,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:55:56,334 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:56,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:56,335 INFO L82 PathProgramCache]: Analyzing trace with hash -528261669, now seen corresponding path program 1 times [2020-10-14 08:55:56,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:56,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440339226] [2020-10-14 08:55:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:56,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:58,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:59,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:01,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:01,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:56:01,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:56:01,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:56:01,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:01,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:01,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:56:01,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 08:56:01,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:01,560 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:01,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:01,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:01,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:01,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:56:01,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:01,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:01,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:01,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:01,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:01,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440339226] [2020-10-14 08:56:01,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:01,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:56:01,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395568194] [2020-10-14 08:56:01,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:01,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:01,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:01,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:01,596 INFO L87 Difference]: Start difference. First operand 14630 states and 21742 transitions. Second operand 6 states. [2020-10-14 08:56:01,804 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:56:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:03,346 INFO L93 Difference]: Finished difference Result 33036 states and 48985 transitions. [2020-10-14 08:56:03,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:03,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:56:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:03,379 INFO L225 Difference]: With dead ends: 33036 [2020-10-14 08:56:03,379 INFO L226 Difference]: Without dead ends: 18874 [2020-10-14 08:56:03,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:56:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18874 states. [2020-10-14 08:56:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18874 to 16718. [2020-10-14 08:56:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16718 states. [2020-10-14 08:56:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16718 states to 16718 states and 24846 transitions. [2020-10-14 08:56:04,468 INFO L78 Accepts]: Start accepts. Automaton has 16718 states and 24846 transitions. Word has length 103 [2020-10-14 08:56:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:04,468 INFO L479 AbstractCegarLoop]: Abstraction has 16718 states and 24846 transitions. [2020-10-14 08:56:04,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:04,468 INFO L276 IsEmpty]: Start isEmpty. Operand 16718 states and 24846 transitions. [2020-10-14 08:56:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:56:04,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:04,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:04,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:56:04,471 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1854741563, now seen corresponding path program 1 times [2020-10-14 08:56:04,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:04,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639378135] [2020-10-14 08:56:04,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:04,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:04,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:04,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:04,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:07,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:08,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:09,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:09,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:09,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:56:09,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:56:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:56:09,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:09,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:56:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 08:56:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:09,703 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:09,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:09,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:09,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:56:09,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:09,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:09,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:09,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639378135] [2020-10-14 08:56:09,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:09,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:56:09,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830227800] [2020-10-14 08:56:09,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:09,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:09,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:09,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:09,736 INFO L87 Difference]: Start difference. First operand 16718 states and 24846 transitions. Second operand 6 states. [2020-10-14 08:56:09,950 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:56:11,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:11,814 INFO L93 Difference]: Finished difference Result 38214 states and 56657 transitions. [2020-10-14 08:56:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:11,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:56:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:11,846 INFO L225 Difference]: With dead ends: 38214 [2020-10-14 08:56:11,846 INFO L226 Difference]: Without dead ends: 22020 [2020-10-14 08:56:11,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:56:11,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22020 states. [2020-10-14 08:56:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22020 to 18808. [2020-10-14 08:56:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18808 states. [2020-10-14 08:56:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18808 states to 18808 states and 27958 transitions. [2020-10-14 08:56:12,693 INFO L78 Accepts]: Start accepts. Automaton has 18808 states and 27958 transitions. Word has length 103 [2020-10-14 08:56:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:12,693 INFO L479 AbstractCegarLoop]: Abstraction has 18808 states and 27958 transitions. [2020-10-14 08:56:12,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:12,693 INFO L276 IsEmpty]: Start isEmpty. Operand 18808 states and 27958 transitions. [2020-10-14 08:56:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:56:12,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:12,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:12,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:56:12,696 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:12,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1161759484, now seen corresponding path program 1 times [2020-10-14 08:56:12,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:12,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580826586] [2020-10-14 08:56:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:12,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:12,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:13,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:16,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:16,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:17,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:56:17,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:56:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:56:17,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:17,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:17,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:56:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:56:17,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:56:17,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:17,922 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:17,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:17,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:17,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:17,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:17,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:17,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:56:17,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:17,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:17,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:17,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580826586] [2020-10-14 08:56:17,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:17,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:56:17,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826222174] [2020-10-14 08:56:17,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:56:17,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:17,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:56:17,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:17,950 INFO L87 Difference]: Start difference. First operand 18808 states and 27958 transitions. Second operand 6 states. [2020-10-14 08:56:18,152 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-14 08:56:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:19,949 INFO L93 Difference]: Finished difference Result 43749 states and 64873 transitions. [2020-10-14 08:56:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:56:19,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-14 08:56:19,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:19,983 INFO L225 Difference]: With dead ends: 43749 [2020-10-14 08:56:19,983 INFO L226 Difference]: Without dead ends: 25523 [2020-10-14 08:56:20,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:56:20,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25523 states. [2020-10-14 08:56:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25523 to 20951. [2020-10-14 08:56:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20951 states. [2020-10-14 08:56:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20951 states to 20951 states and 31150 transitions. [2020-10-14 08:56:20,957 INFO L78 Accepts]: Start accepts. Automaton has 20951 states and 31150 transitions. Word has length 103 [2020-10-14 08:56:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:20,957 INFO L479 AbstractCegarLoop]: Abstraction has 20951 states and 31150 transitions. [2020-10-14 08:56:20,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:56:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 20951 states and 31150 transitions. [2020-10-14 08:56:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:56:20,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:20,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:20,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:56:20,961 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:20,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:20,962 INFO L82 PathProgramCache]: Analyzing trace with hash 506686307, now seen corresponding path program 1 times [2020-10-14 08:56:20,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:20,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218139888] [2020-10-14 08:56:20,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:21,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:21,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:21,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:24,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:24,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:25,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:25,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:25,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:56:25,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:56:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:56:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:25,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:56:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 08:56:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:56:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:26,217 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:26,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:26,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:26,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:26,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:26,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:56:26,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:26,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:26,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218139888] [2020-10-14 08:56:26,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:26,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:56:26,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402229333] [2020-10-14 08:56:26,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:56:26,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:26,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:56:26,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:56:26,258 INFO L87 Difference]: Start difference. First operand 20951 states and 31150 transitions. Second operand 5 states. [2020-10-14 08:56:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:28,550 INFO L93 Difference]: Finished difference Result 34313 states and 50959 transitions. [2020-10-14 08:56:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:56:28,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 08:56:28,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:28,592 INFO L225 Difference]: With dead ends: 34313 [2020-10-14 08:56:28,592 INFO L226 Difference]: Without dead ends: 34311 [2020-10-14 08:56:28,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34311 states. [2020-10-14 08:56:29,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34311 to 20983. [2020-10-14 08:56:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20983 states. [2020-10-14 08:56:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20983 states to 20983 states and 31054 transitions. [2020-10-14 08:56:30,014 INFO L78 Accepts]: Start accepts. Automaton has 20983 states and 31054 transitions. Word has length 104 [2020-10-14 08:56:30,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:30,014 INFO L479 AbstractCegarLoop]: Abstraction has 20983 states and 31054 transitions. [2020-10-14 08:56:30,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:56:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 20983 states and 31054 transitions. [2020-10-14 08:56:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 08:56:30,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:30,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:30,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:56:30,019 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:30,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:30,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1851568863, now seen corresponding path program 1 times [2020-10-14 08:56:30,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:30,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335556355] [2020-10-14 08:56:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:30,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:30,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:32,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:32,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:32,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:32,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:35,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:35,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 08:56:35,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:56:35,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:56:35,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:35,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:56:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:56:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 08:56:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:35,281 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:35,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:35,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:35,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:56:35,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:35,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:56:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:56:35,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:35,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:35,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335556355] [2020-10-14 08:56:35,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:35,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:56:35,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705185556] [2020-10-14 08:56:35,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:56:35,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:35,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:56:35,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:56:35,320 INFO L87 Difference]: Start difference. First operand 20983 states and 31054 transitions. Second operand 5 states. [2020-10-14 08:56:35,537 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 08:56:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:37,953 INFO L93 Difference]: Finished difference Result 49559 states and 73436 transitions. [2020-10-14 08:56:37,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:56:37,954 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-14 08:56:37,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:37,995 INFO L225 Difference]: With dead ends: 49559 [2020-10-14 08:56:37,995 INFO L226 Difference]: Without dead ends: 29269 [2020-10-14 08:56:38,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:56:38,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29269 states. [2020-10-14 08:56:40,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29269 to 29267. [2020-10-14 08:56:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29267 states. [2020-10-14 08:56:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 43250 transitions. [2020-10-14 08:56:40,332 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 43250 transitions. Word has length 104 [2020-10-14 08:56:40,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:40,332 INFO L479 AbstractCegarLoop]: Abstraction has 29267 states and 43250 transitions. [2020-10-14 08:56:40,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:56:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 43250 transitions. [2020-10-14 08:56:40,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:56:40,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:40,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:40,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:56:40,335 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:40,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:40,336 INFO L82 PathProgramCache]: Analyzing trace with hash 303337390, now seen corresponding path program 1 times [2020-10-14 08:56:40,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:40,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594101661] [2020-10-14 08:56:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:41,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:41,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:43,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:44,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:45,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:56:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:56:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:56:45,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:45,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:56:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:56:45,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 08:56:45,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:45,663 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:45,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:45,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:45,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:45,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:45,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:56:45,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:45,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:45,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:56:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:45,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:45,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594101661] [2020-10-14 08:56:45,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:45,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:56:45,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500197379] [2020-10-14 08:56:45,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:56:45,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:45,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:56:45,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:56:45,709 INFO L87 Difference]: Start difference. First operand 29267 states and 43250 transitions. Second operand 11 states. [2020-10-14 08:56:45,953 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-14 08:56:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:56:51,023 INFO L93 Difference]: Finished difference Result 88010 states and 129671 transitions. [2020-10-14 08:56:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:56:51,023 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-14 08:56:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:56:51,117 INFO L225 Difference]: With dead ends: 88010 [2020-10-14 08:56:51,117 INFO L226 Difference]: Without dead ends: 59187 [2020-10-14 08:56:51,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:56:51,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59187 states. [2020-10-14 08:56:54,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59187 to 29267. [2020-10-14 08:56:54,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29267 states. [2020-10-14 08:56:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 43244 transitions. [2020-10-14 08:56:54,482 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 43244 transitions. Word has length 105 [2020-10-14 08:56:54,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:56:54,483 INFO L479 AbstractCegarLoop]: Abstraction has 29267 states and 43244 transitions. [2020-10-14 08:56:54,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:56:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 43244 transitions. [2020-10-14 08:56:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:56:54,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:56:54,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:56:54,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:56:54,485 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:56:54,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:56:54,485 INFO L82 PathProgramCache]: Analyzing trace with hash -891696123, now seen corresponding path program 1 times [2020-10-14 08:56:54,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:56:54,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63828571] [2020-10-14 08:56:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:56:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:54,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:54,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:54,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:55,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:55,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:56,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:57,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:58,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:59,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:59,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:56:59,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-14 08:56:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:56:59,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:59,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:56:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:56:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 08:56:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:59,844 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:56:59,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:56:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:56:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:56:59,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:56:59,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:56:59,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:56:59,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:56:59,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:56:59,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:56:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:56:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:56:59,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:56:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:56:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:56:59,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63828571] [2020-10-14 08:56:59,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:56:59,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:56:59,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238074188] [2020-10-14 08:56:59,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:56:59,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:56:59,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:56:59,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:56:59,891 INFO L87 Difference]: Start difference. First operand 29267 states and 43244 transitions. Second operand 11 states. [2020-10-14 08:57:00,138 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 170 [2020-10-14 08:57:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:04,842 INFO L93 Difference]: Finished difference Result 72918 states and 107506 transitions. [2020-10-14 08:57:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:57:04,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2020-10-14 08:57:04,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:04,897 INFO L225 Difference]: With dead ends: 72918 [2020-10-14 08:57:04,898 INFO L226 Difference]: Without dead ends: 44125 [2020-10-14 08:57:04,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:57:04,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44125 states. [2020-10-14 08:57:07,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44125 to 29267. [2020-10-14 08:57:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29267 states. [2020-10-14 08:57:07,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 43229 transitions. [2020-10-14 08:57:07,393 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 43229 transitions. Word has length 105 [2020-10-14 08:57:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:07,394 INFO L479 AbstractCegarLoop]: Abstraction has 29267 states and 43229 transitions. [2020-10-14 08:57:07,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:57:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 43229 transitions. [2020-10-14 08:57:07,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:57:07,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:07,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:07,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:57:07,396 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:07,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:07,396 INFO L82 PathProgramCache]: Analyzing trace with hash -899347644, now seen corresponding path program 1 times [2020-10-14 08:57:07,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:07,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084864607] [2020-10-14 08:57:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:07,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:07,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:07,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:11,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:12,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:12,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:57:12,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:57:12,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:57:12,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:12,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:57:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:57:12,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 08:57:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:12,901 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:57:12,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:12,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:12,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:12,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:57:12,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:12,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:12,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084864607] [2020-10-14 08:57:12,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:12,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:57:12,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262723205] [2020-10-14 08:57:12,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:57:12,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:12,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:57:12,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:57:12,951 INFO L87 Difference]: Start difference. First operand 29267 states and 43229 transitions. Second operand 10 states. [2020-10-14 08:57:13,271 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-14 08:57:18,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:18,928 INFO L93 Difference]: Finished difference Result 71794 states and 106051 transitions. [2020-10-14 08:57:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:57:18,929 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-10-14 08:57:18,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:18,976 INFO L225 Difference]: With dead ends: 71794 [2020-10-14 08:57:18,977 INFO L226 Difference]: Without dead ends: 43616 [2020-10-14 08:57:19,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-14 08:57:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43616 states. [2020-10-14 08:57:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43616 to 29214. [2020-10-14 08:57:22,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29214 states. [2020-10-14 08:57:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29214 states to 29214 states and 43134 transitions. [2020-10-14 08:57:22,169 INFO L78 Accepts]: Start accepts. Automaton has 29214 states and 43134 transitions. Word has length 105 [2020-10-14 08:57:22,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:22,170 INFO L479 AbstractCegarLoop]: Abstraction has 29214 states and 43134 transitions. [2020-10-14 08:57:22,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:57:22,170 INFO L276 IsEmpty]: Start isEmpty. Operand 29214 states and 43134 transitions. [2020-10-14 08:57:22,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:57:22,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:22,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:22,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:57:22,172 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:22,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:22,172 INFO L82 PathProgramCache]: Analyzing trace with hash -323438463, now seen corresponding path program 1 times [2020-10-14 08:57:22,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:22,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370585121] [2020-10-14 08:57:22,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:22,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:22,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:24,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:24,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:27,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:27,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:57:27,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:57:27,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5529 [2020-10-14 08:57:27,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:27,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:57:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:57:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:57:27,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:28,263 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:57:28,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:28,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:28,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:28,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 08:57:28,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:28,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:57:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:57:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:28,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370585121] [2020-10-14 08:57:28,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:28,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:57:28,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043114122] [2020-10-14 08:57:28,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:57:28,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:28,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:57:28,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:57:28,324 INFO L87 Difference]: Start difference. First operand 29214 states and 43134 transitions. Second operand 11 states. [2020-10-14 08:57:28,555 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-14 08:57:36,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:36,890 INFO L93 Difference]: Finished difference Result 93066 states and 137278 transitions. [2020-10-14 08:57:36,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 08:57:36,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-14 08:57:36,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:36,965 INFO L225 Difference]: With dead ends: 93066 [2020-10-14 08:57:36,965 INFO L226 Difference]: Without dead ends: 64122 [2020-10-14 08:57:36,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-14 08:57:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64122 states. [2020-10-14 08:57:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64122 to 29214. [2020-10-14 08:57:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29214 states. [2020-10-14 08:57:40,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29214 states to 29214 states and 43131 transitions. [2020-10-14 08:57:40,661 INFO L78 Accepts]: Start accepts. Automaton has 29214 states and 43131 transitions. Word has length 106 [2020-10-14 08:57:40,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:40,661 INFO L479 AbstractCegarLoop]: Abstraction has 29214 states and 43131 transitions. [2020-10-14 08:57:40,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:57:40,661 INFO L276 IsEmpty]: Start isEmpty. Operand 29214 states and 43131 transitions. [2020-10-14 08:57:40,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:57:40,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:40,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:40,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:57:40,663 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:40,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:40,664 INFO L82 PathProgramCache]: Analyzing trace with hash -230645236, now seen corresponding path program 1 times [2020-10-14 08:57:40,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:40,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455306635] [2020-10-14 08:57:40,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:40,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:40,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:40,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:41,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:43,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:45,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:45,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:57:45,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:57:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 08:57:45,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:45,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:45,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:57:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:57:45,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 08:57:45,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:46,050 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:57:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:57:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:46,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:57:46,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:57:46,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:57:46,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:57:46,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:57:46,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:57:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:57:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:57:46,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:57:46,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:57:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:57:46,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455306635] [2020-10-14 08:57:46,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:57:46,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:57:46,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882231858] [2020-10-14 08:57:46,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:57:46,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:57:46,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:57:46,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:57:46,084 INFO L87 Difference]: Start difference. First operand 29214 states and 43131 transitions. Second operand 9 states. [2020-10-14 08:57:46,313 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:57:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:57:55,375 INFO L93 Difference]: Finished difference Result 87534 states and 128883 transitions. [2020-10-14 08:57:55,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:57:55,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-14 08:57:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:57:55,446 INFO L225 Difference]: With dead ends: 87534 [2020-10-14 08:57:55,447 INFO L226 Difference]: Without dead ends: 58920 [2020-10-14 08:57:55,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:57:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58920 states. [2020-10-14 08:57:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58920 to 29214. [2020-10-14 08:57:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29214 states. [2020-10-14 08:57:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29214 states to 29214 states and 43091 transitions. [2020-10-14 08:57:59,677 INFO L78 Accepts]: Start accepts. Automaton has 29214 states and 43091 transitions. Word has length 106 [2020-10-14 08:57:59,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:57:59,677 INFO L479 AbstractCegarLoop]: Abstraction has 29214 states and 43091 transitions. [2020-10-14 08:57:59,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:57:59,677 INFO L276 IsEmpty]: Start isEmpty. Operand 29214 states and 43091 transitions. [2020-10-14 08:57:59,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-14 08:57:59,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:57:59,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:57:59,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:57:59,680 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:57:59,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:57:59,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1859959422, now seen corresponding path program 1 times [2020-10-14 08:57:59,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:57:59,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691289135] [2020-10-14 08:57:59,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:57:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:57:59,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:57:59,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:00,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:01,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:01,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:04,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:04,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 08:58:04,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:58:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:58:04,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:04,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:58:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:58:04,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 08:58:04,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:05,130 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:58:05,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:58:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:05,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:05,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:58:05,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:58:05,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:58:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:58:05,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:58:05,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:58:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:58:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:58:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:58:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:58:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:58:05,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691289135] [2020-10-14 08:58:05,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:58:05,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:58:05,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117951187] [2020-10-14 08:58:05,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:58:05,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:58:05,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:58:05,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:58:05,166 INFO L87 Difference]: Start difference. First operand 29214 states and 43091 transitions. Second operand 9 states. [2020-10-14 08:58:05,383 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-14 08:58:14,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:58:14,635 INFO L93 Difference]: Finished difference Result 72866 states and 107309 transitions. [2020-10-14 08:58:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:58:14,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-14 08:58:14,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:58:14,681 INFO L225 Difference]: With dead ends: 72866 [2020-10-14 08:58:14,681 INFO L226 Difference]: Without dead ends: 44072 [2020-10-14 08:58:14,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:58:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44072 states. [2020-10-14 08:58:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44072 to 29214. [2020-10-14 08:58:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29214 states. [2020-10-14 08:58:19,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29214 states to 29214 states and 43061 transitions. [2020-10-14 08:58:19,473 INFO L78 Accepts]: Start accepts. Automaton has 29214 states and 43061 transitions. Word has length 107 [2020-10-14 08:58:19,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:58:19,473 INFO L479 AbstractCegarLoop]: Abstraction has 29214 states and 43061 transitions. [2020-10-14 08:58:19,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:58:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 29214 states and 43061 transitions. [2020-10-14 08:58:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 08:58:19,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:58:19,475 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:58:19,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:58:19,475 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:58:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:58:19,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1980152864, now seen corresponding path program 1 times [2020-10-14 08:58:19,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:58:19,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289323412] [2020-10-14 08:58:19,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:58:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:58:19,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:58:22,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking...