/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.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:51:50,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:51:50,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:51:50,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:51:50,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:51:50,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:51:50,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:51:50,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:51:50,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:51:50,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:51:50,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:51:50,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:51:50,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:51:50,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:51:50,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:51:50,666 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:51:50,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:51:50,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:51:50,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:51:50,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:51:50,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:51:50,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:51:50,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:51:50,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:51:50,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:51:50,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:51:50,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:51:50,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:51:50,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:51:50,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:51:50,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:51:50,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:51:50,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:51:50,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:51:50,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:51:50,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:51:50,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:51:50,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:51:50,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:51:50,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:51:50,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:51:50,705 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 08:51:50,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:51:50,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:51:50,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:51:50,748 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:51:50,748 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:51:50,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:51:50,749 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:51:50,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:51:50,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:51:50,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:51:50,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:51:50,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:51:50,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:51:50,751 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:51:50,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:51:50,751 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:51:50,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:51:50,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:51:50,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:51:50,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:51:50,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:51:50,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:51:50,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:51:50,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:51:50,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:51:50,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:51:50,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:51:50,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:51:50,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:51:50,754 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 08:51:51,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:51:51,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:51:51,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:51:51,087 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:51:51,087 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:51:51,088 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-14 08:51:51,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19f762b27/016ad4d7b3e44e70a9e6f9590ad5caf7/FLAG30d3a5163 [2020-10-14 08:51:51,651 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:51:51,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-14 08:51:51,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19f762b27/016ad4d7b3e44e70a9e6f9590ad5caf7/FLAG30d3a5163 [2020-10-14 08:51:51,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19f762b27/016ad4d7b3e44e70a9e6f9590ad5caf7 [2020-10-14 08:51:51,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:51:51,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:51:51,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:51:51,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:51:51,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:51:51,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:51:51" (1/1) ... [2020-10-14 08:51:51,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb0dbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:51, skipping insertion in model container [2020-10-14 08:51:51,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:51:51" (1/1) ... [2020-10-14 08:51:51,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:51:52,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:51:52,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:51:52,388 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:51:52,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:51:52,695 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:51:52,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52 WrapperNode [2020-10-14 08:51:52,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:51:52,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:51:52,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:51:52,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:51:52,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (1/1) ... [2020-10-14 08:51:52,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (1/1) ... [2020-10-14 08:51:52,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (1/1) ... [2020-10-14 08:51:52,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (1/1) ... [2020-10-14 08:51:52,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (1/1) ... [2020-10-14 08:51:52,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (1/1) ... [2020-10-14 08:51:52,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (1/1) ... [2020-10-14 08:51:52,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:51:52,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:51:52,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:51:52,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:51:52,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (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 08:51:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:51:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:51:52,882 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:51:52,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:51:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:51:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:51:52,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:51:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:51:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:51:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:51:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:51:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:51:52,885 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:51:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:51:52,886 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:51:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:51:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:51:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:51:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 08:51:52,887 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:51:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:51:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:51:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:51:52,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:51:54,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:51:54,106 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:51:54,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:51:54 BoogieIcfgContainer [2020-10-14 08:51:54,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:51:54,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:51:54,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:51:54,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:51:54,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:51:51" (1/3) ... [2020-10-14 08:51:54,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0dde19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:51:54, skipping insertion in model container [2020-10-14 08:51:54,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:51:52" (2/3) ... [2020-10-14 08:51:54,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0dde19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:51:54, skipping insertion in model container [2020-10-14 08:51:54,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:51:54" (3/3) ... [2020-10-14 08:51:54,129 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-14 08:51:54,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:51:54,148 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:51:54,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:51:54,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:51:54,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:51:54,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:51:54,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:51:54,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:51:54,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:51:54,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:51:54,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:51:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states. [2020-10-14 08:51:54,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-14 08:51:54,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:51:54,230 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 08:51:54,231 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:51:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:51:54,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2049294060, now seen corresponding path program 1 times [2020-10-14 08:51:54,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:51:54,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91855855] [2020-10-14 08:51:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:51:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:51:54,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:54,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:55,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:55,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:55,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:55,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:56,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:51:59,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:51:59,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 08:51:59,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:51:59,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:51:59,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:51:59,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:51:59,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:51:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:51:59,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 08:51:59,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:51:59,999 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:00,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:00,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:00,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:00,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:00,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:00,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 08:52:00,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:00,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:00,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:00,126 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 08:52:00,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91855855] [2020-10-14 08:52:00,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:00,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:00,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661280739] [2020-10-14 08:52:00,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:00,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:00,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:00,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:00,171 INFO L87 Difference]: Start difference. First operand 262 states. Second operand 4 states. [2020-10-14 08:52:00,579 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-14 08:52:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:02,021 INFO L93 Difference]: Finished difference Result 575 states and 928 transitions. [2020-10-14 08:52:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:52:02,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 95 [2020-10-14 08:52:02,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:02,045 INFO L225 Difference]: With dead ends: 575 [2020-10-14 08:52:02,045 INFO L226 Difference]: Without dead ends: 439 [2020-10-14 08:52:02,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:52:02,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-10-14 08:52:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 429. [2020-10-14 08:52:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-14 08:52:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 697 transitions. [2020-10-14 08:52:02,143 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 697 transitions. Word has length 95 [2020-10-14 08:52:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:02,144 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 697 transitions. [2020-10-14 08:52:02,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 697 transitions. [2020-10-14 08:52:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 08:52:02,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:02,151 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 08:52:02,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:52:02,152 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:02,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1539840083, now seen corresponding path program 1 times [2020-10-14 08:52:02,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:02,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198854962] [2020-10-14 08:52:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:02,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:02,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:02,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:02,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:04,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:07,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:07,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 08:52:07,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:52:07,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 08:52:07,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:07,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:07,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 08:52:07,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 08:52:07,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 08:52:07,618 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:07,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:07,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:07,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:07,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:07,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:52:07,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:07,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:07,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:07,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:07,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:07,693 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 08:52:07,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198854962] [2020-10-14 08:52:07,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:07,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:07,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026474716] [2020-10-14 08:52:07,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:07,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:07,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:07,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:07,698 INFO L87 Difference]: Start difference. First operand 429 states and 697 transitions. Second operand 4 states. [2020-10-14 08:52:07,980 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-14 08:52:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:09,392 INFO L93 Difference]: Finished difference Result 891 states and 1433 transitions. [2020-10-14 08:52:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:52:09,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-14 08:52:09,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:09,398 INFO L225 Difference]: With dead ends: 891 [2020-10-14 08:52:09,398 INFO L226 Difference]: Without dead ends: 713 [2020-10-14 08:52:09,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:52:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-10-14 08:52:09,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 695. [2020-10-14 08:52:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-14 08:52:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1119 transitions. [2020-10-14 08:52:09,453 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1119 transitions. Word has length 96 [2020-10-14 08:52:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:09,455 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 1119 transitions. [2020-10-14 08:52:09,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:09,455 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1119 transitions. [2020-10-14 08:52:09,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:52:09,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:09,463 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 08:52:09,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:52:09,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:09,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash 169565458, now seen corresponding path program 1 times [2020-10-14 08:52:09,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:09,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859870386] [2020-10-14 08:52:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:09,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:09,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:09,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:09,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:10,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:14,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:14,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:52:14,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:52:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 08:52:14,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:14,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 08:52:14,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 08:52:14,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:14,788 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:14,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:14,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:14,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:14,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:14,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:14,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:52:14,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:14,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:14,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:14,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:14,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:14,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:14,835 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 08:52:14,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859870386] [2020-10-14 08:52:14,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:14,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:14,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161003507] [2020-10-14 08:52:14,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:14,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:14,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:14,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:14,841 INFO L87 Difference]: Start difference. First operand 695 states and 1119 transitions. Second operand 4 states. [2020-10-14 08:52:15,045 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-14 08:52:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:16,493 INFO L93 Difference]: Finished difference Result 1671 states and 2669 transitions. [2020-10-14 08:52:16,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:52:16,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-14 08:52:16,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:16,505 INFO L225 Difference]: With dead ends: 1671 [2020-10-14 08:52:16,508 INFO L226 Difference]: Without dead ends: 1269 [2020-10-14 08:52:16,516 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 08:52:16,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-10-14 08:52:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1235. [2020-10-14 08:52:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1235 states. [2020-10-14 08:52:16,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1971 transitions. [2020-10-14 08:52:16,637 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1971 transitions. Word has length 97 [2020-10-14 08:52:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:16,638 INFO L479 AbstractCegarLoop]: Abstraction has 1235 states and 1971 transitions. [2020-10-14 08:52:16,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1971 transitions. [2020-10-14 08:52:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 08:52:16,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:16,643 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 08:52:16,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:52:16,643 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:16,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1708070041, now seen corresponding path program 1 times [2020-10-14 08:52:16,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:16,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891697682] [2020-10-14 08:52:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:16,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:16,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:16,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:17,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:21,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:21,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 08:52:21,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:52:21,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:52:21,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:21,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:21,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-14 08:52:21,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:52:21,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:21,891 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:21,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:21,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:21,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:21,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:21,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:52:21,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:21,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:21,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:21,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:21,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:21,945 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 08:52:21,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891697682] [2020-10-14 08:52:21,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:21,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:21,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865680410] [2020-10-14 08:52:21,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:21,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:21,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:21,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:21,949 INFO L87 Difference]: Start difference. First operand 1235 states and 1971 transitions. Second operand 4 states. [2020-10-14 08:52:22,134 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-14 08:52:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:23,459 INFO L93 Difference]: Finished difference Result 2719 states and 4317 transitions. [2020-10-14 08:52:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:52:23,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-14 08:52:23,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:23,472 INFO L225 Difference]: With dead ends: 2719 [2020-10-14 08:52:23,472 INFO L226 Difference]: Without dead ends: 2157 [2020-10-14 08:52:23,475 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 08:52:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-10-14 08:52:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 2091. [2020-10-14 08:52:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2020-10-14 08:52:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 3307 transitions. [2020-10-14 08:52:23,643 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 3307 transitions. Word has length 98 [2020-10-14 08:52:23,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:23,644 INFO L479 AbstractCegarLoop]: Abstraction has 2091 states and 3307 transitions. [2020-10-14 08:52:23,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 3307 transitions. [2020-10-14 08:52:23,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-14 08:52:23,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:23,653 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 08:52:23,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:52:23,655 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:23,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1423795054, now seen corresponding path program 1 times [2020-10-14 08:52:23,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:23,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49302802] [2020-10-14 08:52:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:23,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:28,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:28,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-14 08:52:28,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:52:28,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:52:28,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:28,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:28,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 08:52:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:52:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:28,917 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:28,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:28,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:28,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:28,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:28,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:28,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:52:28,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:28,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:28,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:28,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:28,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:28,960 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 08:52:28,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49302802] [2020-10-14 08:52:28,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:28,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:28,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595110206] [2020-10-14 08:52:28,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:28,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:28,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:28,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:28,967 INFO L87 Difference]: Start difference. First operand 2091 states and 3307 transitions. Second operand 4 states. [2020-10-14 08:52:30,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:30,339 INFO L93 Difference]: Finished difference Result 5597 states and 8813 transitions. [2020-10-14 08:52:30,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:52:30,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-14 08:52:30,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:30,367 INFO L225 Difference]: With dead ends: 5597 [2020-10-14 08:52:30,367 INFO L226 Difference]: Without dead ends: 3995 [2020-10-14 08:52:30,373 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 08:52:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2020-10-14 08:52:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3801. [2020-10-14 08:52:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3801 states. [2020-10-14 08:52:30,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 5963 transitions. [2020-10-14 08:52:30,597 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 5963 transitions. Word has length 99 [2020-10-14 08:52:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:30,598 INFO L479 AbstractCegarLoop]: Abstraction has 3801 states and 5963 transitions. [2020-10-14 08:52:30,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:30,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 5963 transitions. [2020-10-14 08:52:30,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:52:30,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:30,609 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 08:52:30,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:52:30,609 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:30,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:30,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1638797377, now seen corresponding path program 1 times [2020-10-14 08:52:30,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:30,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62139487] [2020-10-14 08:52:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:30,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:30,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:30,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:30,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:31,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:31,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:35,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:35,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:52:35,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:52:35,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:52:35,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:35,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:35,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:52:35,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:52:35,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:35,841 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:35,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:35,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:35,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:35,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:35,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:52:35,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:35,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:35,883 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 08:52:35,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62139487] [2020-10-14 08:52:35,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:35,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:35,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076504634] [2020-10-14 08:52:35,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:35,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:35,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:35,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:35,886 INFO L87 Difference]: Start difference. First operand 3801 states and 5963 transitions. Second operand 4 states. [2020-10-14 08:52:36,069 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-14 08:52:37,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:37,617 INFO L93 Difference]: Finished difference Result 9485 states and 14813 transitions. [2020-10-14 08:52:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:52:37,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-14 08:52:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:37,651 INFO L225 Difference]: With dead ends: 9485 [2020-10-14 08:52:37,652 INFO L226 Difference]: Without dead ends: 7147 [2020-10-14 08:52:37,659 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 08:52:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2020-10-14 08:52:38,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 6889. [2020-10-14 08:52:38,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6889 states. [2020-10-14 08:52:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6889 states to 6889 states and 10699 transitions. [2020-10-14 08:52:38,044 INFO L78 Accepts]: Start accepts. Automaton has 6889 states and 10699 transitions. Word has length 100 [2020-10-14 08:52:38,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:38,045 INFO L479 AbstractCegarLoop]: Abstraction has 6889 states and 10699 transitions. [2020-10-14 08:52:38,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6889 states and 10699 transitions. [2020-10-14 08:52:38,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:52:38,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:38,065 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 08:52:38,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:52:38,065 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:38,066 INFO L82 PathProgramCache]: Analyzing trace with hash 726728232, now seen corresponding path program 1 times [2020-10-14 08:52:38,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:38,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755582363] [2020-10-14 08:52:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:38,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:42,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:43,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:43,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:52:43,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:52:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:52:43,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:43,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:52:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 08:52:43,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:52:43,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:52:43,334 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:43,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:52:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:43,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:43,368 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 08:52:43,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755582363] [2020-10-14 08:52:43,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:43,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:52:43,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136829575] [2020-10-14 08:52:43,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:52:43,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:43,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:52:43,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:52:43,370 INFO L87 Difference]: Start difference. First operand 6889 states and 10699 transitions. Second operand 5 states. [2020-10-14 08:52:44,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:44,667 INFO L93 Difference]: Finished difference Result 9899 states and 15276 transitions. [2020-10-14 08:52:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:52:44,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 101 [2020-10-14 08:52:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:44,703 INFO L225 Difference]: With dead ends: 9899 [2020-10-14 08:52:44,703 INFO L226 Difference]: Without dead ends: 6889 [2020-10-14 08:52:44,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:52:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6889 states. [2020-10-14 08:52:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6889 to 6889. [2020-10-14 08:52:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6889 states. [2020-10-14 08:52:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6889 states to 6889 states and 10507 transitions. [2020-10-14 08:52:45,012 INFO L78 Accepts]: Start accepts. Automaton has 6889 states and 10507 transitions. Word has length 101 [2020-10-14 08:52:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:45,013 INFO L479 AbstractCegarLoop]: Abstraction has 6889 states and 10507 transitions. [2020-10-14 08:52:45,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:52:45,013 INFO L276 IsEmpty]: Start isEmpty. Operand 6889 states and 10507 transitions. [2020-10-14 08:52:45,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:52:45,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:45,030 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 08:52:45,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:52:45,031 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:45,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:45,031 INFO L82 PathProgramCache]: Analyzing trace with hash -2102327392, now seen corresponding path program 1 times [2020-10-14 08:52:45,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:45,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580668640] [2020-10-14 08:52:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:48,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:50,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:50,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:52:50,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:52:50,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:52:50,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:50,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-14 08:52:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 08:52:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:50,239 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:50,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:50,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:50,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:50,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:50,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:50,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 08:52:50,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:50,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:50,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:50,280 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 08:52:50,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580668640] [2020-10-14 08:52:50,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:50,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:50,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65412065] [2020-10-14 08:52:50,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:50,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:50,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:50,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:50,282 INFO L87 Difference]: Start difference. First operand 6889 states and 10507 transitions. Second operand 4 states. [2020-10-14 08:52:51,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:51,863 INFO L93 Difference]: Finished difference Result 15341 states and 23149 transitions. [2020-10-14 08:52:51,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:52:51,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:52:51,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:51,907 INFO L225 Difference]: With dead ends: 15341 [2020-10-14 08:52:51,907 INFO L226 Difference]: Without dead ends: 11508 [2020-10-14 08:52:51,918 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 08:52:51,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11508 states. [2020-10-14 08:52:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11508 to 11503. [2020-10-14 08:52:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11503 states. [2020-10-14 08:52:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11503 states to 11503 states and 17175 transitions. [2020-10-14 08:52:52,317 INFO L78 Accepts]: Start accepts. Automaton has 11503 states and 17175 transitions. Word has length 103 [2020-10-14 08:52:52,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:52,317 INFO L479 AbstractCegarLoop]: Abstraction has 11503 states and 17175 transitions. [2020-10-14 08:52:52,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 11503 states and 17175 transitions. [2020-10-14 08:52:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-14 08:52:52,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:52,334 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, 1, 1] [2020-10-14 08:52:52,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:52:52,335 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:52,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash 333286086, now seen corresponding path program 1 times [2020-10-14 08:52:52,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:52,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057614878] [2020-10-14 08:52:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:52,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:57,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:57,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 08:52:57,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:52:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:52:57,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:57,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:52:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 08:52:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:52:57,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:57,538 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:52:57,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:52:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:57,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:52:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:52:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:52:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:52:57,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:52:57,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:52:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:52:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:52:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:52:57,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:52:57,566 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 08:52:57,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057614878] [2020-10-14 08:52:57,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:52:57,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:52:57,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610393282] [2020-10-14 08:52:57,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:52:57,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:52:57,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:52:57,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:52:57,568 INFO L87 Difference]: Start difference. First operand 11503 states and 17175 transitions. Second operand 4 states. [2020-10-14 08:52:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:52:59,288 INFO L93 Difference]: Finished difference Result 23411 states and 34841 transitions. [2020-10-14 08:52:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:52:59,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-14 08:52:59,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:52:59,320 INFO L225 Difference]: With dead ends: 23411 [2020-10-14 08:52:59,320 INFO L226 Difference]: Without dead ends: 14961 [2020-10-14 08:52:59,340 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 08:52:59,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14961 states. [2020-10-14 08:52:59,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14961 to 14351. [2020-10-14 08:52:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14351 states. [2020-10-14 08:52:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14351 states to 14351 states and 21239 transitions. [2020-10-14 08:52:59,797 INFO L78 Accepts]: Start accepts. Automaton has 14351 states and 21239 transitions. Word has length 105 [2020-10-14 08:52:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:52:59,797 INFO L479 AbstractCegarLoop]: Abstraction has 14351 states and 21239 transitions. [2020-10-14 08:52:59,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:52:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 14351 states and 21239 transitions. [2020-10-14 08:52:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 08:52:59,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:52:59,814 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 08:52:59,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:52:59,814 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:52:59,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:52:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1742153042, now seen corresponding path program 1 times [2020-10-14 08:52:59,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:52:59,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357579829] [2020-10-14 08:52:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:52:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:52:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:59,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:52:59,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:00,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:02,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:04,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:04,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 08:53:04,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:53:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:53:04,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:04,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:53:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 08:53:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:53:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:05,002 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:53:05,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:05,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:05,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:05,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:05,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:05,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:05,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:05,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:05,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:53:05,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357579829] [2020-10-14 08:53:05,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:05,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:53:05,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173446662] [2020-10-14 08:53:05,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:53:05,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:05,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:53:05,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:53:05,032 INFO L87 Difference]: Start difference. First operand 14351 states and 21239 transitions. Second operand 4 states. [2020-10-14 08:53:05,201 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:06,973 INFO L93 Difference]: Finished difference Result 26071 states and 38643 transitions. [2020-10-14 08:53:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:53:06,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-14 08:53:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:07,019 INFO L225 Difference]: With dead ends: 26071 [2020-10-14 08:53:07,020 INFO L226 Difference]: Without dead ends: 19189 [2020-10-14 08:53:07,037 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 08:53:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19189 states. [2020-10-14 08:53:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19189 to 16769. [2020-10-14 08:53:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16769 states. [2020-10-14 08:53:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16769 states to 16769 states and 24723 transitions. [2020-10-14 08:53:07,706 INFO L78 Accepts]: Start accepts. Automaton has 16769 states and 24723 transitions. Word has length 106 [2020-10-14 08:53:07,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:07,707 INFO L479 AbstractCegarLoop]: Abstraction has 16769 states and 24723 transitions. [2020-10-14 08:53:07,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:53:07,707 INFO L276 IsEmpty]: Start isEmpty. Operand 16769 states and 24723 transitions. [2020-10-14 08:53:07,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 08:53:07,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:07,726 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 08:53:07,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:53:07,726 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:07,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:07,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1976368025, now seen corresponding path program 1 times [2020-10-14 08:53:07,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:07,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062025192] [2020-10-14 08:53:07,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:07,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:08,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:12,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:12,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:12,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 08:53:12,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:53:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 08:53:12,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:12,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:53:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-14 08:53:12,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:53:12,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:12,971 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:53:12,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:12,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:12,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:12,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:12,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:53:12,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:12,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:13,004 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 08:53:13,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062025192] [2020-10-14 08:53:13,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:13,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:53:13,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224641350] [2020-10-14 08:53:13,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:53:13,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:13,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:53:13,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:13,007 INFO L87 Difference]: Start difference. First operand 16769 states and 24723 transitions. Second operand 6 states. [2020-10-14 08:53:16,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:16,186 INFO L93 Difference]: Finished difference Result 38161 states and 56039 transitions. [2020-10-14 08:53:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 08:53:16,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-14 08:53:16,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:16,227 INFO L225 Difference]: With dead ends: 38161 [2020-10-14 08:53:16,227 INFO L226 Difference]: Without dead ends: 22458 [2020-10-14 08:53:16,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:53:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22458 states. [2020-10-14 08:53:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22458 to 16659. [2020-10-14 08:53:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16659 states. [2020-10-14 08:53:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16659 states to 16659 states and 24271 transitions. [2020-10-14 08:53:16,936 INFO L78 Accepts]: Start accepts. Automaton has 16659 states and 24271 transitions. Word has length 108 [2020-10-14 08:53:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:16,936 INFO L479 AbstractCegarLoop]: Abstraction has 16659 states and 24271 transitions. [2020-10-14 08:53:16,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:53:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 16659 states and 24271 transitions. [2020-10-14 08:53:16,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 08:53:16,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:16,954 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 08:53:16,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:53:16,954 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:16,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:16,955 INFO L82 PathProgramCache]: Analyzing trace with hash -288014163, now seen corresponding path program 1 times [2020-10-14 08:53:16,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:16,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129019262] [2020-10-14 08:53:16,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:16,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:22,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:22,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 08:53:22,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:53:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-14 08:53:22,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:22,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:53:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:53:22,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:53:22,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:22,249 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:53:22,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:22,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:22,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:22,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:22,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:22,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:22,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:22,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:22,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:22,272 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 08:53:22,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129019262] [2020-10-14 08:53:22,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:22,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:53:22,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814631061] [2020-10-14 08:53:22,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:53:22,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:22,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:53:22,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:22,274 INFO L87 Difference]: Start difference. First operand 16659 states and 24271 transitions. Second operand 6 states. [2020-10-14 08:53:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:24,852 INFO L93 Difference]: Finished difference Result 42289 states and 61415 transitions. [2020-10-14 08:53:24,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 08:53:24,852 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-14 08:53:24,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:24,895 INFO L225 Difference]: With dead ends: 42289 [2020-10-14 08:53:24,895 INFO L226 Difference]: Without dead ends: 28095 [2020-10-14 08:53:24,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:53:24,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28095 states. [2020-10-14 08:53:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28095 to 16589. [2020-10-14 08:53:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16589 states. [2020-10-14 08:53:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16589 states to 16589 states and 23901 transitions. [2020-10-14 08:53:25,980 INFO L78 Accepts]: Start accepts. Automaton has 16589 states and 23901 transitions. Word has length 108 [2020-10-14 08:53:25,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:25,981 INFO L479 AbstractCegarLoop]: Abstraction has 16589 states and 23901 transitions. [2020-10-14 08:53:25,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:53:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 16589 states and 23901 transitions. [2020-10-14 08:53:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 08:53:26,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:26,000 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 08:53:26,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:53:26,000 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:26,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1000258277, now seen corresponding path program 1 times [2020-10-14 08:53:26,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:26,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288451705] [2020-10-14 08:53:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:26,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:26,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:28,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:31,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:31,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 08:53:31,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:53:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:53:31,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:31,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:31,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:53:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 08:53:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:53:31,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:31,213 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:53:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:31,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:31,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:31,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:31,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:31,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:31,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:31,234 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 08:53:31,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288451705] [2020-10-14 08:53:31,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:31,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:53:31,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817397202] [2020-10-14 08:53:31,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:53:31,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:31,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:53:31,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:53:31,237 INFO L87 Difference]: Start difference. First operand 16589 states and 23901 transitions. Second operand 5 states. [2020-10-14 08:53:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:32,739 INFO L93 Difference]: Finished difference Result 30099 states and 43290 transitions. [2020-10-14 08:53:32,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:53:32,744 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-14 08:53:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:32,765 INFO L225 Difference]: With dead ends: 30099 [2020-10-14 08:53:32,765 INFO L226 Difference]: Without dead ends: 14637 [2020-10-14 08:53:32,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:32,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14637 states. [2020-10-14 08:53:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14637 to 14637. [2020-10-14 08:53:33,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14637 states. [2020-10-14 08:53:33,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14637 states to 14637 states and 21030 transitions. [2020-10-14 08:53:33,658 INFO L78 Accepts]: Start accepts. Automaton has 14637 states and 21030 transitions. Word has length 108 [2020-10-14 08:53:33,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:33,659 INFO L479 AbstractCegarLoop]: Abstraction has 14637 states and 21030 transitions. [2020-10-14 08:53:33,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:53:33,659 INFO L276 IsEmpty]: Start isEmpty. Operand 14637 states and 21030 transitions. [2020-10-14 08:53:33,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 08:53:33,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:33,670 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, 1] [2020-10-14 08:53:33,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:53:33,671 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:33,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:33,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1291785101, now seen corresponding path program 1 times [2020-10-14 08:53:33,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:33,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036761690] [2020-10-14 08:53:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:33,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:33,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:33,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:33,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:34,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:34,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:34,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:38,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:38,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 08:53:38,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:53:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:53:38,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:38,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:53:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-14 08:53:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 08:53:38,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:38,877 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:53:38,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:38,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:38,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:38,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:38,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:38,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:38,903 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 08:53:38,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036761690] [2020-10-14 08:53:38,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:38,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:53:38,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840312052] [2020-10-14 08:53:38,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:53:38,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:53:38,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:53:38,905 INFO L87 Difference]: Start difference. First operand 14637 states and 21030 transitions. Second operand 4 states. [2020-10-14 08:53:39,084 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 08:53:40,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:40,880 INFO L93 Difference]: Finished difference Result 33420 states and 47905 transitions. [2020-10-14 08:53:40,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:53:40,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-10-14 08:53:40,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:40,902 INFO L225 Difference]: With dead ends: 33420 [2020-10-14 08:53:40,902 INFO L226 Difference]: Without dead ends: 21062 [2020-10-14 08:53:40,915 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 08:53:40,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21062 states. [2020-10-14 08:53:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21062 to 20997. [2020-10-14 08:53:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20997 states. [2020-10-14 08:53:41,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20997 states to 20997 states and 29940 transitions. [2020-10-14 08:53:41,975 INFO L78 Accepts]: Start accepts. Automaton has 20997 states and 29940 transitions. Word has length 109 [2020-10-14 08:53:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:41,975 INFO L479 AbstractCegarLoop]: Abstraction has 20997 states and 29940 transitions. [2020-10-14 08:53:41,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:53:41,975 INFO L276 IsEmpty]: Start isEmpty. Operand 20997 states and 29940 transitions. [2020-10-14 08:53:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-14 08:53:41,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:41,993 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, 1] [2020-10-14 08:53:41,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:53:41,994 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:41,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:41,994 INFO L82 PathProgramCache]: Analyzing trace with hash -791567157, now seen corresponding path program 1 times [2020-10-14 08:53:41,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:41,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75423834] [2020-10-14 08:53:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:42,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:42,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:47,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:47,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 08:53:47,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:53:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:53:47,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:47,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:53:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:53:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:53:47,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:47,207 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:53:47,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:47,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:47,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:47,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:47,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:47,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:47,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:47,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:47,230 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 08:53:47,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75423834] [2020-10-14 08:53:47,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:47,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:53:47,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755446947] [2020-10-14 08:53:47,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:53:47,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:47,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:53:47,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:53:47,232 INFO L87 Difference]: Start difference. First operand 20997 states and 29940 transitions. Second operand 5 states. [2020-10-14 08:53:49,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:49,173 INFO L93 Difference]: Finished difference Result 41948 states and 59794 transitions. [2020-10-14 08:53:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:53:49,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-10-14 08:53:49,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:49,194 INFO L225 Difference]: With dead ends: 41948 [2020-10-14 08:53:49,194 INFO L226 Difference]: Without dead ends: 20997 [2020-10-14 08:53:49,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:53:49,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20997 states. [2020-10-14 08:53:50,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20997 to 20997. [2020-10-14 08:53:50,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20997 states. [2020-10-14 08:53:50,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20997 states to 20997 states and 29900 transitions. [2020-10-14 08:53:50,353 INFO L78 Accepts]: Start accepts. Automaton has 20997 states and 29900 transitions. Word has length 109 [2020-10-14 08:53:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:50,354 INFO L479 AbstractCegarLoop]: Abstraction has 20997 states and 29900 transitions. [2020-10-14 08:53:50,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:53:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 20997 states and 29900 transitions. [2020-10-14 08:53:50,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 08:53:50,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:50,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:50,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:53:50,374 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:50,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1663186964, now seen corresponding path program 1 times [2020-10-14 08:53:50,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:50,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567202804] [2020-10-14 08:53:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:50,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:50,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:50,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:52,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:52,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:52,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:55,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:55,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 08:53:55,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:53:55,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 08:53:55,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:55,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:55,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:53:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-14 08:53:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 08:53:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:55,571 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:53:55,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:53:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:55,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:55,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:53:55,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:53:55,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:53:55,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:53:55,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:53:55,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:53:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:53:55,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:53:55,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:53:55,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:53:55,607 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 08:53:55,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567202804] [2020-10-14 08:53:55,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:53:55,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:53:55,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044325115] [2020-10-14 08:53:55,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:53:55,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:53:55,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:53:55,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:53:55,611 INFO L87 Difference]: Start difference. First operand 20997 states and 29900 transitions. Second operand 4 states. [2020-10-14 08:53:55,790 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:53:57,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:53:57,650 INFO L93 Difference]: Finished difference Result 35270 states and 50289 transitions. [2020-10-14 08:53:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:53:57,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-14 08:53:57,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:53:57,667 INFO L225 Difference]: With dead ends: 35270 [2020-10-14 08:53:57,667 INFO L226 Difference]: Without dead ends: 18286 [2020-10-14 08:53:57,679 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 08:53:57,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18286 states. [2020-10-14 08:53:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18286 to 18284. [2020-10-14 08:53:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18284 states. [2020-10-14 08:53:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18284 states to 18284 states and 26061 transitions. [2020-10-14 08:53:58,510 INFO L78 Accepts]: Start accepts. Automaton has 18284 states and 26061 transitions. Word has length 148 [2020-10-14 08:53:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:53:58,510 INFO L479 AbstractCegarLoop]: Abstraction has 18284 states and 26061 transitions. [2020-10-14 08:53:58,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:53:58,510 INFO L276 IsEmpty]: Start isEmpty. Operand 18284 states and 26061 transitions. [2020-10-14 08:53:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-14 08:53:58,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:53:58,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:53:58,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:53:58,522 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:53:58,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:53:58,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1753954091, now seen corresponding path program 1 times [2020-10-14 08:53:58,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:53:58,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010376256] [2020-10-14 08:53:58,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:53:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:53:58,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:58,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:58,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:58,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:58,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:59,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:53:59,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:02,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:02,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:02,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:03,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:03,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 08:54:03,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 08:54:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:54:03,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:03,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 08:54:03,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 08:54:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:03,739 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:54:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:03,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:03,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:03,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:03,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:03,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:54:03,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:03,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:03,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:03,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:03,773 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 08:54:03,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010376256] [2020-10-14 08:54:03,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:03,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:54:03,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703202286] [2020-10-14 08:54:03,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:54:03,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:03,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:54:03,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:54:03,775 INFO L87 Difference]: Start difference. First operand 18284 states and 26061 transitions. Second operand 4 states. [2020-10-14 08:54:03,968 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:54:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:05,778 INFO L93 Difference]: Finished difference Result 32788 states and 46875 transitions. [2020-10-14 08:54:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:54:05,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2020-10-14 08:54:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:05,798 INFO L225 Difference]: With dead ends: 32788 [2020-10-14 08:54:05,799 INFO L226 Difference]: Without dead ends: 17037 [2020-10-14 08:54:05,815 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 08:54:05,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17037 states. [2020-10-14 08:54:06,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17037 to 17035. [2020-10-14 08:54:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17035 states. [2020-10-14 08:54:06,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17035 states to 17035 states and 24302 transitions. [2020-10-14 08:54:06,806 INFO L78 Accepts]: Start accepts. Automaton has 17035 states and 24302 transitions. Word has length 149 [2020-10-14 08:54:06,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:06,807 INFO L479 AbstractCegarLoop]: Abstraction has 17035 states and 24302 transitions. [2020-10-14 08:54:06,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:54:06,807 INFO L276 IsEmpty]: Start isEmpty. Operand 17035 states and 24302 transitions. [2020-10-14 08:54:06,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-14 08:54:06,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:06,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:06,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:54:06,818 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:06,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:06,818 INFO L82 PathProgramCache]: Analyzing trace with hash 280229418, now seen corresponding path program 1 times [2020-10-14 08:54:06,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:06,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401905424] [2020-10-14 08:54:06,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:06,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:07,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:08,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:11,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:11,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 08:54:11,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:54:11,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:54:11,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:11,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:11,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:11,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:54:11,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 08:54:11,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:12,018 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:54:12,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:12,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:12,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:12,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:12,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:12,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:54:12,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:12,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:12,050 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 08:54:12,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401905424] [2020-10-14 08:54:12,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:12,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:54:12,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385864986] [2020-10-14 08:54:12,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:54:12,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:12,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:54:12,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:54:12,051 INFO L87 Difference]: Start difference. First operand 17035 states and 24302 transitions. Second operand 4 states. [2020-10-14 08:54:12,228 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:54:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:13,877 INFO L93 Difference]: Finished difference Result 31845 states and 45592 transitions. [2020-10-14 08:54:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:54:13,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-10-14 08:54:13,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:13,896 INFO L225 Difference]: With dead ends: 31845 [2020-10-14 08:54:13,896 INFO L226 Difference]: Without dead ends: 16657 [2020-10-14 08:54:13,911 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 08:54:13,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16657 states. [2020-10-14 08:54:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16657 to 16655. [2020-10-14 08:54:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16655 states. [2020-10-14 08:54:14,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16655 states to 16655 states and 23798 transitions. [2020-10-14 08:54:14,875 INFO L78 Accepts]: Start accepts. Automaton has 16655 states and 23798 transitions. Word has length 150 [2020-10-14 08:54:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:14,875 INFO L479 AbstractCegarLoop]: Abstraction has 16655 states and 23798 transitions. [2020-10-14 08:54:14,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:54:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 16655 states and 23798 transitions. [2020-10-14 08:54:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 08:54:14,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:14,886 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:14,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:54:14,886 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:14,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:14,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1159209946, now seen corresponding path program 1 times [2020-10-14 08:54:14,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:14,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168147546] [2020-10-14 08:54:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:14,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:14,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:14,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:14,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:16,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:16,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 08:54:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:54:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:54:19,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:19,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 08:54:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 08:54:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:20,084 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:54:20,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:20,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:20,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:20,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:20,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:20,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:54:20,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:20,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:20,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:20,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:20,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:20,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:20,116 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 08:54:20,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168147546] [2020-10-14 08:54:20,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:20,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:54:20,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830034246] [2020-10-14 08:54:20,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:54:20,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:20,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:54:20,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:54:20,118 INFO L87 Difference]: Start difference. First operand 16655 states and 23798 transitions. Second operand 4 states. [2020-10-14 08:54:20,309 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:54:22,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:22,138 INFO L93 Difference]: Finished difference Result 31270 states and 44797 transitions. [2020-10-14 08:54:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:54:22,139 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-10-14 08:54:22,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:22,158 INFO L225 Difference]: With dead ends: 31270 [2020-10-14 08:54:22,158 INFO L226 Difference]: Without dead ends: 16272 [2020-10-14 08:54:22,175 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 08:54:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16272 states. [2020-10-14 08:54:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16272 to 16270. [2020-10-14 08:54:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16270 states. [2020-10-14 08:54:23,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16270 states to 16270 states and 23255 transitions. [2020-10-14 08:54:23,181 INFO L78 Accepts]: Start accepts. Automaton has 16270 states and 23255 transitions. Word has length 151 [2020-10-14 08:54:23,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:23,181 INFO L479 AbstractCegarLoop]: Abstraction has 16270 states and 23255 transitions. [2020-10-14 08:54:23,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:54:23,181 INFO L276 IsEmpty]: Start isEmpty. Operand 16270 states and 23255 transitions. [2020-10-14 08:54:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-14 08:54:23,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:23,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:23,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:54:23,192 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:23,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1048166849, now seen corresponding path program 1 times [2020-10-14 08:54:23,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:23,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850284419] [2020-10-14 08:54:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:23,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:23,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:23,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:23,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:24,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:25,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:26,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:26,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:28,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:28,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 08:54:28,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:54:28,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 08:54:28,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:28,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:54:28,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 08:54:28,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:28,388 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:54:28,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:28,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:28,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:28,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:28,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:28,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:54:28,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:28,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:28,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:28,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:28,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:28,420 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 08:54:28,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850284419] [2020-10-14 08:54:28,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:28,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:54:28,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334293490] [2020-10-14 08:54:28,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:54:28,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:28,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:54:28,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:54:28,422 INFO L87 Difference]: Start difference. First operand 16270 states and 23255 transitions. Second operand 4 states. [2020-10-14 08:54:28,601 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-14 08:54:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:30,262 INFO L93 Difference]: Finished difference Result 30936 states and 44339 transitions. [2020-10-14 08:54:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:54:30,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-14 08:54:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:30,278 INFO L225 Difference]: With dead ends: 30936 [2020-10-14 08:54:30,279 INFO L226 Difference]: Without dead ends: 16123 [2020-10-14 08:54:30,293 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 08:54:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16123 states. [2020-10-14 08:54:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16123 to 16121. [2020-10-14 08:54:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16121 states. [2020-10-14 08:54:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16121 states to 16121 states and 23050 transitions. [2020-10-14 08:54:31,276 INFO L78 Accepts]: Start accepts. Automaton has 16121 states and 23050 transitions. Word has length 152 [2020-10-14 08:54:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:31,276 INFO L479 AbstractCegarLoop]: Abstraction has 16121 states and 23050 transitions. [2020-10-14 08:54:31,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:54:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 16121 states and 23050 transitions. [2020-10-14 08:54:31,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:54:31,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:31,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:31,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:54:31,286 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:31,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1000427165, now seen corresponding path program 1 times [2020-10-14 08:54:31,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:31,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94957280] [2020-10-14 08:54:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:31,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:31,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:31,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:31,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:32,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:32,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:36,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:36,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:54:36,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:54:36,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:54:36,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:36,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 08:54:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 08:54:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:36,484 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:54:36,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:36,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:36,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:36,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:36,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:54:36,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:36,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:36,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:36,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:36,513 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 08:54:36,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94957280] [2020-10-14 08:54:36,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:36,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:54:36,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108127075] [2020-10-14 08:54:36,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:54:36,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:36,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:54:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:54:36,515 INFO L87 Difference]: Start difference. First operand 16121 states and 23050 transitions. Second operand 4 states. [2020-10-14 08:54:36,693 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-14 08:54:39,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:39,315 INFO L93 Difference]: Finished difference Result 46704 states and 66829 transitions. [2020-10-14 08:54:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:54:39,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-14 08:54:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:39,491 INFO L225 Difference]: With dead ends: 46704 [2020-10-14 08:54:39,491 INFO L226 Difference]: Without dead ends: 32027 [2020-10-14 08:54:39,505 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 08:54:39,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32027 states. [2020-10-14 08:54:41,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32027 to 32025. [2020-10-14 08:54:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32025 states. [2020-10-14 08:54:41,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32025 states to 32025 states and 45578 transitions. [2020-10-14 08:54:41,181 INFO L78 Accepts]: Start accepts. Automaton has 32025 states and 45578 transitions. Word has length 153 [2020-10-14 08:54:41,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:41,182 INFO L479 AbstractCegarLoop]: Abstraction has 32025 states and 45578 transitions. [2020-10-14 08:54:41,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:54:41,182 INFO L276 IsEmpty]: Start isEmpty. Operand 32025 states and 45578 transitions. [2020-10-14 08:54:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:54:41,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:41,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:41,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:54:41,201 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:41,202 INFO L82 PathProgramCache]: Analyzing trace with hash 2117124034, now seen corresponding path program 1 times [2020-10-14 08:54:41,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:41,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769488641] [2020-10-14 08:54:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:41,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:42,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:43,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:46,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:46,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:54:46,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:54:46,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:54:46,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:46,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:54:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-14 08:54:46,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 08:54:46,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:46,390 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:54:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:54:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:46,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:46,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:54:46,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:54:46,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:54:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:54:46,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:54:46,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:54:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:54:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:54:46,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:54:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:54:46,418 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 08:54:46,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769488641] [2020-10-14 08:54:46,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:54:46,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:54:46,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047350773] [2020-10-14 08:54:46,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:54:46,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:54:46,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:54:46,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:54:46,420 INFO L87 Difference]: Start difference. First operand 32025 states and 45578 transitions. Second operand 4 states. [2020-10-14 08:54:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:54:52,120 INFO L93 Difference]: Finished difference Result 92817 states and 132132 transitions. [2020-10-14 08:54:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:54:52,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-14 08:54:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:54:52,190 INFO L225 Difference]: With dead ends: 92817 [2020-10-14 08:54:52,191 INFO L226 Difference]: Without dead ends: 63653 [2020-10-14 08:54:52,217 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 08:54:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63653 states. [2020-10-14 08:54:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63653 to 63651. [2020-10-14 08:54:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63651 states. [2020-10-14 08:54:55,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63651 states to 63651 states and 90128 transitions. [2020-10-14 08:54:55,934 INFO L78 Accepts]: Start accepts. Automaton has 63651 states and 90128 transitions. Word has length 153 [2020-10-14 08:54:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:54:55,934 INFO L479 AbstractCegarLoop]: Abstraction has 63651 states and 90128 transitions. [2020-10-14 08:54:55,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:54:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 63651 states and 90128 transitions. [2020-10-14 08:54:55,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:54:55,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:54:55,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:54:55,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:54:55,978 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:54:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:54:55,978 INFO L82 PathProgramCache]: Analyzing trace with hash 584258567, now seen corresponding path program 1 times [2020-10-14 08:54:55,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:54:55,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430260262] [2020-10-14 08:54:55,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:54:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:54:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:56,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:58,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:59,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:59,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:54:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:01,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:55:01,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:55:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:55:01,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:01,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 08:55:01,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 08:55:01,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:01,203 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:55:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:01,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:01,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:01,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:01,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:55:01,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:01,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:01,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:01,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:01,234 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 08:55:01,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430260262] [2020-10-14 08:55:01,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:01,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:01,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752608040] [2020-10-14 08:55:01,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:01,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:01,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:01,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:01,236 INFO L87 Difference]: Start difference. First operand 63651 states and 90128 transitions. Second operand 4 states. [2020-10-14 08:55:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:07,470 INFO L93 Difference]: Finished difference Result 116919 states and 166274 transitions. [2020-10-14 08:55:07,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:55:07,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-14 08:55:07,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:07,532 INFO L225 Difference]: With dead ends: 116919 [2020-10-14 08:55:07,532 INFO L226 Difference]: Without dead ends: 58863 [2020-10-14 08:55:07,566 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 08:55:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58863 states. [2020-10-14 08:55:11,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58863 to 58861. [2020-10-14 08:55:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58861 states. [2020-10-14 08:55:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58861 states to 58861 states and 83114 transitions. [2020-10-14 08:55:11,147 INFO L78 Accepts]: Start accepts. Automaton has 58861 states and 83114 transitions. Word has length 153 [2020-10-14 08:55:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:11,148 INFO L479 AbstractCegarLoop]: Abstraction has 58861 states and 83114 transitions. [2020-10-14 08:55:11,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 58861 states and 83114 transitions. [2020-10-14 08:55:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:55:11,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:11,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:11,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:55:11,168 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:11,169 INFO L82 PathProgramCache]: Analyzing trace with hash -545171020, now seen corresponding path program 1 times [2020-10-14 08:55:11,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:11,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509483222] [2020-10-14 08:55:11,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:11,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:16,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:16,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:55:16,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:55:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:55:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:16,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 08:55:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 08:55:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:16,384 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:55:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:16,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:16,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:55:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:16,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:55:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:55:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:16,416 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 08:55:16,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509483222] [2020-10-14 08:55:16,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:16,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:55:16,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295298595] [2020-10-14 08:55:16,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:55:16,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:16,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:55:16,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:55:16,418 INFO L87 Difference]: Start difference. First operand 58861 states and 83114 transitions. Second operand 4 states. [2020-10-14 08:55:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:19,240 INFO L93 Difference]: Finished difference Result 85497 states and 120900 transitions. [2020-10-14 08:55:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:55:19,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-14 08:55:19,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:19,274 INFO L225 Difference]: With dead ends: 85497 [2020-10-14 08:55:19,275 INFO L226 Difference]: Without dead ends: 29683 [2020-10-14 08:55:19,318 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 08:55:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29683 states. [2020-10-14 08:55:21,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29683 to 29681. [2020-10-14 08:55:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29681 states. [2020-10-14 08:55:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29681 states to 29681 states and 41462 transitions. [2020-10-14 08:55:21,442 INFO L78 Accepts]: Start accepts. Automaton has 29681 states and 41462 transitions. Word has length 153 [2020-10-14 08:55:21,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:21,442 INFO L479 AbstractCegarLoop]: Abstraction has 29681 states and 41462 transitions. [2020-10-14 08:55:21,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:55:21,442 INFO L276 IsEmpty]: Start isEmpty. Operand 29681 states and 41462 transitions. [2020-10-14 08:55:21,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:55:21,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:21,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:21,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 08:55:21,452 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:21,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1326006554, now seen corresponding path program 1 times [2020-10-14 08:55:21,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:21,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261979872] [2020-10-14 08:55:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:22,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:23,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:26,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:26,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-14 08:55:26,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:55:26,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:55:26,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:26,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:55:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:55:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 08:55:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:26,682 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-14 08:55:26,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:55:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:26,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:26,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:55:26,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:55:26,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:55:26,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:55:26,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:55:26,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:55:26,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:55:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:55:26,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:55:26,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:55:26,727 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 08:55:26,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261979872] [2020-10-14 08:55:26,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:55:26,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:55:26,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267652120] [2020-10-14 08:55:26,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:55:26,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:55:26,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:55:26,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:55:26,729 INFO L87 Difference]: Start difference. First operand 29681 states and 41462 transitions. Second operand 6 states. [2020-10-14 08:55:26,939 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-14 08:55:32,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:55:32,474 INFO L93 Difference]: Finished difference Result 86409 states and 120552 transitions. [2020-10-14 08:55:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:55:32,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2020-10-14 08:55:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:55:32,534 INFO L225 Difference]: With dead ends: 86409 [2020-10-14 08:55:32,534 INFO L226 Difference]: Without dead ends: 56915 [2020-10-14 08:55:32,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:55:32,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56915 states. [2020-10-14 08:55:36,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56915 to 56913. [2020-10-14 08:55:36,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56913 states. [2020-10-14 08:55:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56913 states to 56913 states and 78942 transitions. [2020-10-14 08:55:36,388 INFO L78 Accepts]: Start accepts. Automaton has 56913 states and 78942 transitions. Word has length 153 [2020-10-14 08:55:36,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:55:36,388 INFO L479 AbstractCegarLoop]: Abstraction has 56913 states and 78942 transitions. [2020-10-14 08:55:36,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:55:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 56913 states and 78942 transitions. [2020-10-14 08:55:36,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-14 08:55:36,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:55:36,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:55:36,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 08:55:36,406 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:55:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:55:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash -2072622138, now seen corresponding path program 1 times [2020-10-14 08:55:36,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:55:36,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164816067] [2020-10-14 08:55:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:55:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:55:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:55:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking...