/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_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:32:01,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:32:01,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:32:01,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:32:01,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:32:01,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:32:01,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:32:01,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:32:01,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:32:01,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:32:01,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:32:01,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:32:01,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:32:01,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:32:01,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:32:01,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:32:01,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:32:01,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:32:01,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:32:01,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:32:01,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:32:01,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:32:01,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:32:01,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:32:01,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:32:01,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:32:01,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:32:01,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:32:01,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:32:01,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:32:01,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:32:01,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:32:01,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:32:01,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:32:01,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:32:01,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:32:01,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:32:01,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:32:01,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:32:01,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:32:01,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:32:01,802 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 09:32:01,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:32:01,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:32:01,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:32:01,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:32:01,830 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:32:01,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:32:01,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:32:01,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:32:01,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:32:01,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:32:01,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:32:01,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:32:01,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:32:01,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:32:01,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:32:01,833 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:32:01,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:32:01,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:32:01,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:32:01,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:32:01,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:32:01,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:32:01,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:32:01,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:32:01,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:32:01,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:32:01,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:32:01,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:32:01,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:32:01,836 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 09:32:02,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:32:02,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:32:02,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:32:02,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:32:02,184 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:32:02,184 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:32:02,255 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f212d39bc/cd2e55602b0d4af89cf95f182526ff3a/FLAG9ab215cfc [2020-10-14 09:32:02,840 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:32:02,841 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:32:02,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f212d39bc/cd2e55602b0d4af89cf95f182526ff3a/FLAG9ab215cfc [2020-10-14 09:32:03,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f212d39bc/cd2e55602b0d4af89cf95f182526ff3a [2020-10-14 09:32:03,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:32:03,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:32:03,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:32:03,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:32:03,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:32:03,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:03,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67abf343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03, skipping insertion in model container [2020-10-14 09:32:03,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:03,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:32:03,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:32:03,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:32:03,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:32:03,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:32:03,989 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:32:03,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03 WrapperNode [2020-10-14 09:32:03,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:32:03,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:32:03,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:32:03,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:32:04,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:04,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:04,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:04,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:04,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:04,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:04,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (1/1) ... [2020-10-14 09:32:04,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:32:04,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:32:04,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:32:04,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:32:04,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (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 09:32:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:32:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:32:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:32:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:32:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:32:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:32:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 09:32:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:32:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:32:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:32:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:32:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:32:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:32:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:32:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:32:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:32:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:32:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:32:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:32:04,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:32:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:32:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:32:05,455 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:32:05,456 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:32:05,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:32:05 BoogieIcfgContainer [2020-10-14 09:32:05,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:32:05,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:32:05,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:32:05,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:32:05,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:32:03" (1/3) ... [2020-10-14 09:32:05,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5574f9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:32:05, skipping insertion in model container [2020-10-14 09:32:05,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:32:03" (2/3) ... [2020-10-14 09:32:05,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5574f9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:32:05, skipping insertion in model container [2020-10-14 09:32:05,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:32:05" (3/3) ... [2020-10-14 09:32:05,470 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-14 09:32:05,479 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:32:05,487 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:32:05,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:32:05,521 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:32:05,522 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:32:05,522 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:32:05,522 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:32:05,522 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:32:05,522 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:32:05,522 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:32:05,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:32:05,546 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states. [2020-10-14 09:32:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-14 09:32:05,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:05,564 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] [2020-10-14 09:32:05,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:05,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1373065631, now seen corresponding path program 1 times [2020-10-14 09:32:05,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:05,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415374269] [2020-10-14 09:32:05,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:06,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:07,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:11,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:11,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 09:32:11,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:32:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-14 09:32:11,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:11,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:32:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 09:32:11,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 09:32:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:32:11,729 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:32:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:11,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:11,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:11,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:11,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 09:32:11,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:11,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:11,816 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 09:32:11,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415374269] [2020-10-14 09:32:11,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:11,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:32:11,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193955625] [2020-10-14 09:32:11,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:32:11,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:11,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:32:11,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:11,844 INFO L87 Difference]: Start difference. First operand 355 states. Second operand 4 states. [2020-10-14 09:32:12,296 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:32:14,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:14,462 INFO L93 Difference]: Finished difference Result 661 states and 1135 transitions. [2020-10-14 09:32:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:32:14,470 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-14 09:32:14,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:14,489 INFO L225 Difference]: With dead ends: 661 [2020-10-14 09:32:14,489 INFO L226 Difference]: Without dead ends: 495 [2020-10-14 09:32:14,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:32:14,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-10-14 09:32:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2020-10-14 09:32:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2020-10-14 09:32:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 813 transitions. [2020-10-14 09:32:14,590 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 813 transitions. Word has length 122 [2020-10-14 09:32:14,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:14,591 INFO L479 AbstractCegarLoop]: Abstraction has 492 states and 813 transitions. [2020-10-14 09:32:14,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:32:14,591 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 813 transitions. [2020-10-14 09:32:14,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:32:14,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:14,596 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] [2020-10-14 09:32:14,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:32:14,596 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:14,597 INFO L82 PathProgramCache]: Analyzing trace with hash -407523285, now seen corresponding path program 1 times [2020-10-14 09:32:14,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:14,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437626380] [2020-10-14 09:32:14,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:14,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:14,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:15,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:15,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:16,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:16,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:17,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:19,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:19,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:32:19,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:32:19,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 09:32:19,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:19,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:32:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 09:32:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 09:32:19,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:20,110 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:32:20,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:20,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:20,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:20,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:32:20,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:20,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:20,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:20,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:20,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:20,184 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 09:32:20,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437626380] [2020-10-14 09:32:20,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:20,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:32:20,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944475681] [2020-10-14 09:32:20,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:32:20,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:20,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:32:20,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:20,188 INFO L87 Difference]: Start difference. First operand 492 states and 813 transitions. Second operand 4 states. [2020-10-14 09:32:20,568 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:32:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:22,322 INFO L93 Difference]: Finished difference Result 1062 states and 1769 transitions. [2020-10-14 09:32:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:32:22,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 09:32:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:22,333 INFO L225 Difference]: With dead ends: 1062 [2020-10-14 09:32:22,333 INFO L226 Difference]: Without dead ends: 767 [2020-10-14 09:32:22,340 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 09:32:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2020-10-14 09:32:22,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 763. [2020-10-14 09:32:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-10-14 09:32:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1266 transitions. [2020-10-14 09:32:22,419 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1266 transitions. Word has length 125 [2020-10-14 09:32:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:22,419 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 1266 transitions. [2020-10-14 09:32:22,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:32:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1266 transitions. [2020-10-14 09:32:22,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 09:32:22,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:22,427 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] [2020-10-14 09:32:22,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:32:22,428 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:22,429 INFO L82 PathProgramCache]: Analyzing trace with hash 302119668, now seen corresponding path program 1 times [2020-10-14 09:32:22,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:22,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557003462] [2020-10-14 09:32:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:22,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:23,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:25,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:25,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:27,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:27,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 09:32:27,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:32:27,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 09:32:27,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:27,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:32:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:32:27,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 09:32:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 09:32:28,035 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:32:28,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:28,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:28,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:28,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:28,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 09:32:28,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:28,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:28,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:28,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:28,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:28,144 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 09:32:28,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557003462] [2020-10-14 09:32:28,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:28,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:32:28,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467612923] [2020-10-14 09:32:28,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:32:28,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:28,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:32:28,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:28,147 INFO L87 Difference]: Start difference. First operand 763 states and 1266 transitions. Second operand 4 states. [2020-10-14 09:32:28,657 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:32:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:30,460 INFO L93 Difference]: Finished difference Result 1855 states and 3092 transitions. [2020-10-14 09:32:30,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:32:30,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-14 09:32:30,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:30,470 INFO L225 Difference]: With dead ends: 1855 [2020-10-14 09:32:30,470 INFO L226 Difference]: Without dead ends: 1289 [2020-10-14 09:32:30,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:32:30,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2020-10-14 09:32:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1283. [2020-10-14 09:32:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2020-10-14 09:32:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 2130 transitions. [2020-10-14 09:32:30,541 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 2130 transitions. Word has length 128 [2020-10-14 09:32:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:30,544 INFO L479 AbstractCegarLoop]: Abstraction has 1283 states and 2130 transitions. [2020-10-14 09:32:30,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:32:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 2130 transitions. [2020-10-14 09:32:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 09:32:30,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:30,550 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] [2020-10-14 09:32:30,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:32:30,551 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash -152382628, now seen corresponding path program 1 times [2020-10-14 09:32:30,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:30,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15344674] [2020-10-14 09:32:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:30,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:30,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:31,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:31,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:31,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:35,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:35,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 09:32:35,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:32:35,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 09:32:35,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:35,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:32:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-14 09:32:35,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 09:32:35,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:36,161 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:32:36,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:36,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:36,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:36,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:36,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:32:36,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:36,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:36,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:36,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:36,257 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 09:32:36,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15344674] [2020-10-14 09:32:36,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:36,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:32:36,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000609362] [2020-10-14 09:32:36,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:32:36,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:36,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:32:36,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:36,261 INFO L87 Difference]: Start difference. First operand 1283 states and 2130 transitions. Second operand 4 states. [2020-10-14 09:32:36,707 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:32:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:38,833 INFO L93 Difference]: Finished difference Result 3359 states and 5580 transitions. [2020-10-14 09:32:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:32:38,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 09:32:38,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:38,851 INFO L225 Difference]: With dead ends: 3359 [2020-10-14 09:32:38,852 INFO L226 Difference]: Without dead ends: 2273 [2020-10-14 09:32:38,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:32:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2020-10-14 09:32:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 2263. [2020-10-14 09:32:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2020-10-14 09:32:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3710 transitions. [2020-10-14 09:32:39,025 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3710 transitions. Word has length 131 [2020-10-14 09:32:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:39,026 INFO L479 AbstractCegarLoop]: Abstraction has 2263 states and 3710 transitions. [2020-10-14 09:32:39,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:32:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3710 transitions. [2020-10-14 09:32:39,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 09:32:39,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:39,031 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] [2020-10-14 09:32:39,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:32:39,031 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:39,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash -527002627, now seen corresponding path program 1 times [2020-10-14 09:32:39,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:39,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444476597] [2020-10-14 09:32:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:39,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:39,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:40,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:40,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:44,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:44,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 09:32:44,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:32:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 09:32:44,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:44,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:32:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:32:44,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 09:32:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:44,677 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:32:44,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:44,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:44,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:44,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:44,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:32:44,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:44,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:44,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:44,765 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 09:32:44,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444476597] [2020-10-14 09:32:44,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:44,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:32:44,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025144694] [2020-10-14 09:32:44,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:32:44,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:44,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:32:44,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:32:44,767 INFO L87 Difference]: Start difference. First operand 2263 states and 3710 transitions. Second operand 5 states. [2020-10-14 09:32:47,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:47,681 INFO L93 Difference]: Finished difference Result 6605 states and 10818 transitions. [2020-10-14 09:32:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:32:47,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-14 09:32:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:47,707 INFO L225 Difference]: With dead ends: 6605 [2020-10-14 09:32:47,707 INFO L226 Difference]: Without dead ends: 4407 [2020-10-14 09:32:47,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:32:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4407 states. [2020-10-14 09:32:47,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4407 to 4405. [2020-10-14 09:32:47,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4405 states. [2020-10-14 09:32:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 7195 transitions. [2020-10-14 09:32:47,978 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 7195 transitions. Word has length 134 [2020-10-14 09:32:47,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:47,978 INFO L479 AbstractCegarLoop]: Abstraction has 4405 states and 7195 transitions. [2020-10-14 09:32:47,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:32:47,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 7195 transitions. [2020-10-14 09:32:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 09:32:47,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:47,983 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] [2020-10-14 09:32:47,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:32:47,984 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:47,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:47,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1931057901, now seen corresponding path program 1 times [2020-10-14 09:32:47,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:47,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945577740] [2020-10-14 09:32:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:48,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:48,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:48,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:49,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:49,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:53,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:53,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 09:32:53,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:32:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:32:53,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:53,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:32:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-14 09:32:53,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 09:32:53,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:32:53,553 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:32:53,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:32:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:53,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:32:53,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:32:53,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:32:53,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:32:53,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:32:53,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:32:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:32:53,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:32:53,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:32:53,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:32:53,618 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 09:32:53,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945577740] [2020-10-14 09:32:53,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:32:53,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:32:53,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037284988] [2020-10-14 09:32:53,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:32:53,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:32:53,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:32:53,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:53,621 INFO L87 Difference]: Start difference. First operand 4405 states and 7195 transitions. Second operand 4 states. [2020-10-14 09:32:55,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:32:55,627 INFO L93 Difference]: Finished difference Result 10349 states and 16969 transitions. [2020-10-14 09:32:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:32:55,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-14 09:32:55,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:32:55,659 INFO L225 Difference]: With dead ends: 10349 [2020-10-14 09:32:55,659 INFO L226 Difference]: Without dead ends: 6307 [2020-10-14 09:32:55,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:32:55,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2020-10-14 09:32:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 6161. [2020-10-14 09:32:56,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6161 states. [2020-10-14 09:32:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6161 states to 6161 states and 10015 transitions. [2020-10-14 09:32:56,154 INFO L78 Accepts]: Start accepts. Automaton has 6161 states and 10015 transitions. Word has length 135 [2020-10-14 09:32:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:32:56,154 INFO L479 AbstractCegarLoop]: Abstraction has 6161 states and 10015 transitions. [2020-10-14 09:32:56,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:32:56,155 INFO L276 IsEmpty]: Start isEmpty. Operand 6161 states and 10015 transitions. [2020-10-14 09:32:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:32:56,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:32:56,159 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] [2020-10-14 09:32:56,159 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:32:56,160 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:32:56,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:32:56,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1952334613, now seen corresponding path program 1 times [2020-10-14 09:32:56,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:32:56,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923531523] [2020-10-14 09:32:56,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:32:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:32:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:56,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:56,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:56,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:56,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:32:57,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:01,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:01,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:33:01,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:33:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:33:01,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:01,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:33:01,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 09:33:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:01,762 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:01,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:01,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:01,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:01,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:01,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 09:33:01,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:01,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:01,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:33:01,902 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 09:33:01,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923531523] [2020-10-14 09:33:01,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:01,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:01,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828200679] [2020-10-14 09:33:01,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:01,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:01,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:01,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:01,905 INFO L87 Difference]: Start difference. First operand 6161 states and 10015 transitions. Second operand 4 states. [2020-10-14 09:33:05,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:05,343 INFO L93 Difference]: Finished difference Result 18059 states and 29329 transitions. [2020-10-14 09:33:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:05,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:33:05,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:05,393 INFO L225 Difference]: With dead ends: 18059 [2020-10-14 09:33:05,394 INFO L226 Difference]: Without dead ends: 11993 [2020-10-14 09:33:05,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11993 states. [2020-10-14 09:33:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11993 to 11991. [2020-10-14 09:33:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11991 states. [2020-10-14 09:33:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11991 states to 11991 states and 19404 transitions. [2020-10-14 09:33:06,035 INFO L78 Accepts]: Start accepts. Automaton has 11991 states and 19404 transitions. Word has length 136 [2020-10-14 09:33:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:06,035 INFO L479 AbstractCegarLoop]: Abstraction has 11991 states and 19404 transitions. [2020-10-14 09:33:06,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:06,036 INFO L276 IsEmpty]: Start isEmpty. Operand 11991 states and 19404 transitions. [2020-10-14 09:33:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-14 09:33:06,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:06,043 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] [2020-10-14 09:33:06,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:33:06,043 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1312509264, now seen corresponding path program 1 times [2020-10-14 09:33:06,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:06,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388703716] [2020-10-14 09:33:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:06,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:07,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:11,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:11,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 09:33:11,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:33:11,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:33:11,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:11,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 09:33:11,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:33:11,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:11,464 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:11,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:11,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:11,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:11,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 09:33:11,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:11,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:11,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:11,522 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 09:33:11,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388703716] [2020-10-14 09:33:11,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:11,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:11,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104467885] [2020-10-14 09:33:11,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:11,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:11,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:11,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:11,528 INFO L87 Difference]: Start difference. First operand 11991 states and 19404 transitions. Second operand 4 states. [2020-10-14 09:33:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:15,164 INFO L93 Difference]: Finished difference Result 35785 states and 57874 transitions. [2020-10-14 09:33:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:15,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-10-14 09:33:15,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:15,218 INFO L225 Difference]: With dead ends: 35785 [2020-10-14 09:33:15,218 INFO L226 Difference]: Without dead ends: 23890 [2020-10-14 09:33:15,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:15,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23890 states. [2020-10-14 09:33:16,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23890 to 12008. [2020-10-14 09:33:16,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12008 states. [2020-10-14 09:33:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12008 states to 12008 states and 19426 transitions. [2020-10-14 09:33:16,040 INFO L78 Accepts]: Start accepts. Automaton has 12008 states and 19426 transitions. Word has length 136 [2020-10-14 09:33:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:16,040 INFO L479 AbstractCegarLoop]: Abstraction has 12008 states and 19426 transitions. [2020-10-14 09:33:16,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 12008 states and 19426 transitions. [2020-10-14 09:33:16,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:33:16,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:16,048 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] [2020-10-14 09:33:16,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:33:16,048 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:16,049 INFO L82 PathProgramCache]: Analyzing trace with hash -862745196, now seen corresponding path program 1 times [2020-10-14 09:33:16,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:16,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973492066] [2020-10-14 09:33:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:16,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:21,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:21,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:33:21,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:33:21,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:33:21,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:21,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 09:33:21,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 09:33:21,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:21,468 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:21,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:21,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:21,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:21,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:21,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:33:21,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:21,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:21,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:21,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:21,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:21,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:33:21,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973492066] [2020-10-14 09:33:21,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:21,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:21,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341689857] [2020-10-14 09:33:21,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:21,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:21,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:21,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:21,509 INFO L87 Difference]: Start difference. First operand 12008 states and 19426 transitions. Second operand 4 states. [2020-10-14 09:33:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:23,694 INFO L93 Difference]: Finished difference Result 28644 states and 46524 transitions. [2020-10-14 09:33:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:23,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:33:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:23,737 INFO L225 Difference]: With dead ends: 28644 [2020-10-14 09:33:23,737 INFO L226 Difference]: Without dead ends: 17314 [2020-10-14 09:33:23,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:23,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17314 states. [2020-10-14 09:33:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17314 to 16880. [2020-10-14 09:33:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16880 states. [2020-10-14 09:33:24,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16880 states to 16880 states and 27146 transitions. [2020-10-14 09:33:24,599 INFO L78 Accepts]: Start accepts. Automaton has 16880 states and 27146 transitions. Word has length 137 [2020-10-14 09:33:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:24,600 INFO L479 AbstractCegarLoop]: Abstraction has 16880 states and 27146 transitions. [2020-10-14 09:33:24,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:24,600 INFO L276 IsEmpty]: Start isEmpty. Operand 16880 states and 27146 transitions. [2020-10-14 09:33:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:33:24,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:24,605 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] [2020-10-14 09:33:24,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:33:24,606 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:24,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1008207763, now seen corresponding path program 1 times [2020-10-14 09:33:24,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:24,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173696835] [2020-10-14 09:33:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:24,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:24,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:25,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:25,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:29,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:29,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:33:29,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:33:29,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-14 09:33:29,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:29,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 09:33:29,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 09:33:29,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:30,038 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:30,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:30,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:30,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:30,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:30,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:33:30,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173696835] [2020-10-14 09:33:30,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:30,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:30,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727233433] [2020-10-14 09:33:30,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:30,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:30,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:30,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:30,087 INFO L87 Difference]: Start difference. First operand 16880 states and 27146 transitions. Second operand 4 states. [2020-10-14 09:33:34,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:34,232 INFO L93 Difference]: Finished difference Result 50439 states and 81088 transitions. [2020-10-14 09:33:34,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:34,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:33:34,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:34,316 INFO L225 Difference]: With dead ends: 50439 [2020-10-14 09:33:34,317 INFO L226 Difference]: Without dead ends: 33668 [2020-10-14 09:33:34,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:34,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33668 states. [2020-10-14 09:33:35,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33668 to 16914. [2020-10-14 09:33:35,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16914 states. [2020-10-14 09:33:35,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16914 states to 16914 states and 27194 transitions. [2020-10-14 09:33:35,448 INFO L78 Accepts]: Start accepts. Automaton has 16914 states and 27194 transitions. Word has length 137 [2020-10-14 09:33:35,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:35,448 INFO L479 AbstractCegarLoop]: Abstraction has 16914 states and 27194 transitions. [2020-10-14 09:33:35,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:35,449 INFO L276 IsEmpty]: Start isEmpty. Operand 16914 states and 27194 transitions. [2020-10-14 09:33:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 09:33:35,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:35,453 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] [2020-10-14 09:33:35,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:33:35,453 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:35,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1881834089, now seen corresponding path program 1 times [2020-10-14 09:33:35,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:35,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925092745] [2020-10-14 09:33:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:35,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:35,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:36,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:36,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:40,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 09:33:40,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:33:40,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:33:40,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:40,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 09:33:40,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 09:33:40,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:40,854 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:40,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:40,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:40,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:40,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:40,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:33:40,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:40,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:40,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:40,893 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 09:33:40,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925092745] [2020-10-14 09:33:40,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:40,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:40,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645011489] [2020-10-14 09:33:40,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:40,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:40,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:40,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:40,894 INFO L87 Difference]: Start difference. First operand 16914 states and 27194 transitions. Second operand 4 states. [2020-10-14 09:33:41,348 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:33:44,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:44,043 INFO L93 Difference]: Finished difference Result 32662 states and 52692 transitions. [2020-10-14 09:33:44,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:33:44,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-14 09:33:44,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:44,079 INFO L225 Difference]: With dead ends: 32662 [2020-10-14 09:33:44,079 INFO L226 Difference]: Without dead ends: 21844 [2020-10-14 09:33:44,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:33:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21844 states. [2020-10-14 09:33:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21844 to 21842. [2020-10-14 09:33:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21842 states. [2020-10-14 09:33:45,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21842 states to 21842 states and 35082 transitions. [2020-10-14 09:33:45,109 INFO L78 Accepts]: Start accepts. Automaton has 21842 states and 35082 transitions. Word has length 137 [2020-10-14 09:33:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:45,109 INFO L479 AbstractCegarLoop]: Abstraction has 21842 states and 35082 transitions. [2020-10-14 09:33:45,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 21842 states and 35082 transitions. [2020-10-14 09:33:45,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:33:45,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:45,113 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] [2020-10-14 09:33:45,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:33:45,114 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:45,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:45,114 INFO L82 PathProgramCache]: Analyzing trace with hash 759154758, now seen corresponding path program 1 times [2020-10-14 09:33:45,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:45,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979587266] [2020-10-14 09:33:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:45,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:45,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:46,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:46,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:50,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:50,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:33:50,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:33:50,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 09:33:50,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:50,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:33:50,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 09:33:50,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 09:33:50,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:50,540 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:33:50,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:33:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:33:50,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:33:50,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:33:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:33:50,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:33:50,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:33:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:33:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:33:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:33:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:33:50,601 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 09:33:50,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979587266] [2020-10-14 09:33:50,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:33:50,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:33:50,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784456206] [2020-10-14 09:33:50,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:33:50,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:33:50,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:33:50,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:50,603 INFO L87 Difference]: Start difference. First operand 21842 states and 35082 transitions. Second operand 4 states. [2020-10-14 09:33:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:33:55,418 INFO L93 Difference]: Finished difference Result 64263 states and 103171 transitions. [2020-10-14 09:33:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:33:55,418 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-10-14 09:33:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:33:55,487 INFO L225 Difference]: With dead ends: 64263 [2020-10-14 09:33:55,487 INFO L226 Difference]: Without dead ends: 42562 [2020-10-14 09:33:55,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:33:55,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42562 states. [2020-10-14 09:33:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42562 to 42560. [2020-10-14 09:33:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42560 states. [2020-10-14 09:33:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42560 states to 42560 states and 68020 transitions. [2020-10-14 09:33:57,870 INFO L78 Accepts]: Start accepts. Automaton has 42560 states and 68020 transitions. Word has length 138 [2020-10-14 09:33:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:33:57,871 INFO L479 AbstractCegarLoop]: Abstraction has 42560 states and 68020 transitions. [2020-10-14 09:33:57,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:33:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 42560 states and 68020 transitions. [2020-10-14 09:33:57,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-14 09:33:57,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:33:57,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:33:57,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:33:57,876 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:33:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:33:57,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1887293597, now seen corresponding path program 1 times [2020-10-14 09:33:57,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:33:57,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376823587] [2020-10-14 09:33:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:33:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:33:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:33:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:02,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:02,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:02,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:02,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 09:34:02,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:34:02,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:34:02,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:02,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:34:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 09:34:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 09:34:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:03,368 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:03,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:03,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:03,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:03,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:03,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:34:03,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:03,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:03,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:03,424 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 09:34:03,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376823587] [2020-10-14 09:34:03,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:03,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:34:03,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490353010] [2020-10-14 09:34:03,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:34:03,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:03,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:34:03,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:34:03,426 INFO L87 Difference]: Start difference. First operand 42560 states and 68020 transitions. Second operand 5 states. [2020-10-14 09:34:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:09,934 INFO L93 Difference]: Finished difference Result 125645 states and 200934 transitions. [2020-10-14 09:34:09,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:09,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-10-14 09:34:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:10,046 INFO L225 Difference]: With dead ends: 125645 [2020-10-14 09:34:10,047 INFO L226 Difference]: Without dead ends: 83343 [2020-10-14 09:34:10,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 09:34:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83343 states. [2020-10-14 09:34:16,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83343 to 83341. [2020-10-14 09:34:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83341 states. [2020-10-14 09:34:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83341 states to 83341 states and 132720 transitions. [2020-10-14 09:34:16,490 INFO L78 Accepts]: Start accepts. Automaton has 83341 states and 132720 transitions. Word has length 138 [2020-10-14 09:34:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:16,490 INFO L479 AbstractCegarLoop]: Abstraction has 83341 states and 132720 transitions. [2020-10-14 09:34:16,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:34:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 83341 states and 132720 transitions. [2020-10-14 09:34:16,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 09:34:16,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:16,499 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] [2020-10-14 09:34:16,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:34:16,499 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:16,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:16,499 INFO L82 PathProgramCache]: Analyzing trace with hash 913510756, now seen corresponding path program 1 times [2020-10-14 09:34:16,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:16,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141355212] [2020-10-14 09:34:16,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:16,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:16,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:16,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:16,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:21,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:21,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 09:34:21,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:34:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:34:21,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:21,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 09:34:21,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 09:34:21,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:21,902 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:21,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:21,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:21,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:21,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:21,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:21,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 09:34:21,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:21,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:21,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:21,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:21,939 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 09:34:21,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141355212] [2020-10-14 09:34:21,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:21,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:21,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352796345] [2020-10-14 09:34:21,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:21,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:21,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:21,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:21,940 INFO L87 Difference]: Start difference. First operand 83341 states and 132720 transitions. Second operand 4 states. [2020-10-14 09:34:22,311 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2020-10-14 09:34:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:30,323 INFO L93 Difference]: Finished difference Result 158385 states and 253458 transitions. [2020-10-14 09:34:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:34:30,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2020-10-14 09:34:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:30,442 INFO L225 Difference]: With dead ends: 158385 [2020-10-14 09:34:30,442 INFO L226 Difference]: Without dead ends: 105007 [2020-10-14 09:34:30,482 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 09:34:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105007 states. [2020-10-14 09:34:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105007 to 105005. [2020-10-14 09:34:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105005 states. [2020-10-14 09:34:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105005 states to 105005 states and 167280 transitions. [2020-10-14 09:34:36,790 INFO L78 Accepts]: Start accepts. Automaton has 105005 states and 167280 transitions. Word has length 139 [2020-10-14 09:34:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:34:36,790 INFO L479 AbstractCegarLoop]: Abstraction has 105005 states and 167280 transitions. [2020-10-14 09:34:36,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:34:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 105005 states and 167280 transitions. [2020-10-14 09:34:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 09:34:36,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:34:36,797 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] [2020-10-14 09:34:36,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:34:36,797 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:34:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:34:36,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1283293140, now seen corresponding path program 1 times [2020-10-14 09:34:36,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:34:36,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890917680] [2020-10-14 09:34:36,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:34:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:37,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:38,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:41,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:41,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 09:34:41,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:34:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:34:41,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:41,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:34:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 09:34:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 09:34:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:42,264 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:34:42,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:34:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:34:42,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:34:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:34:42,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:34:42,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:34:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:34:42,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:34:42,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:34:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:34:42,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:34:42,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:34:42,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:34:42,336 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 09:34:42,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890917680] [2020-10-14 09:34:42,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:34:42,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:34:42,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375969140] [2020-10-14 09:34:42,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:34:42,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:34:42,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:34:42,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:42,339 INFO L87 Difference]: Start difference. First operand 105005 states and 167280 transitions. Second operand 4 states. [2020-10-14 09:34:56,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:34:56,844 INFO L93 Difference]: Finished difference Result 308389 states and 490924 transitions. [2020-10-14 09:34:56,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:34:56,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-10-14 09:34:56,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:34:57,117 INFO L225 Difference]: With dead ends: 308389 [2020-10-14 09:34:57,117 INFO L226 Difference]: Without dead ends: 204204 [2020-10-14 09:34:57,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:34:57,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204204 states. [2020-10-14 09:35:12,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204204 to 204195. [2020-10-14 09:35:12,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204195 states. [2020-10-14 09:35:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204195 states to 204195 states and 323443 transitions. [2020-10-14 09:35:13,613 INFO L78 Accepts]: Start accepts. Automaton has 204195 states and 323443 transitions. Word has length 140 [2020-10-14 09:35:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:35:13,613 INFO L479 AbstractCegarLoop]: Abstraction has 204195 states and 323443 transitions. [2020-10-14 09:35:13,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:35:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 204195 states and 323443 transitions. [2020-10-14 09:35:13,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 09:35:13,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:35:13,626 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] [2020-10-14 09:35:13,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 09:35:13,626 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:35:13,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:35:13,626 INFO L82 PathProgramCache]: Analyzing trace with hash -587182631, now seen corresponding path program 1 times [2020-10-14 09:35:13,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:35:13,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014659365] [2020-10-14 09:35:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:35:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:13,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:13,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:13,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:13,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:13,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:17,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:18,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:18,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 09:35:18,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 09:35:18,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 09:35:18,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:18,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:35:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:35:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 09:35:18,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:35:19,013 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 259 [2020-10-14 09:35:19,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:35:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:35:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:35:19,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:35:19,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:35:19,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:35:19,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:35:19,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:35:19,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:35:19,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:35:19,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:35:19,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:35:19,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:35:19,062 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 09:35:19,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014659365] [2020-10-14 09:35:19,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:35:19,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:35:19,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033601812] [2020-10-14 09:35:19,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:35:19,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:35:19,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:35:19,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:35:19,064 INFO L87 Difference]: Start difference. First operand 204195 states and 323443 transitions. Second operand 4 states.