/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:42:50,969 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:42:50,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:42:51,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:42:51,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:42:51,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:42:51,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:42:51,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:42:51,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:42:51,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:42:51,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:42:51,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:42:51,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:42:51,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:42:51,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:42:51,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:42:51,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:42:51,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:42:51,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:42:51,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:42:51,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:42:51,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:42:51,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:42:51,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:42:51,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:42:51,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:42:51,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:42:51,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:42:51,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:42:51,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:42:51,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:42:51,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:42:51,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:42:51,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:42:51,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:42:51,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:42:51,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:42:51,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:42:51,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:42:51,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:42:51,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:42:51,080 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:42:51,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:42:51,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:42:51,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:42:51,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:42:51,104 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:42:51,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:42:51,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:42:51,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:42:51,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:42:51,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:42:51,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:42:51,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:42:51,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:42:51,105 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:42:51,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:42:51,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:42:51,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:42:51,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:42:51,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:42:51,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:42:51,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:42:51,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:42:51,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:42:51,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:42:51,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:42:51,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:42:51,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:42:51,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:42:51,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:42:51,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:42:51,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:42:51,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:42:51,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:42:51,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:42:51,449 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:42:51,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:42:51,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacfe4dc6/999ced2208794daf96266086a565fd2c/FLAG68944d3e2 [2020-10-14 08:42:52,061 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:42:52,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:42:52,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacfe4dc6/999ced2208794daf96266086a565fd2c/FLAG68944d3e2 [2020-10-14 08:42:52,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bacfe4dc6/999ced2208794daf96266086a565fd2c [2020-10-14 08:42:52,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:42:52,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:42:52,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:42:52,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:42:52,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:42:52,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:52,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52, skipping insertion in model container [2020-10-14 08:42:52,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:52,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:42:52,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:42:52,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:42:52,800 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:42:52,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:42:52,997 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:42:52,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52 WrapperNode [2020-10-14 08:42:52,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:42:52,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:42:52,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:42:52,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:42:53,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:53,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:53,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:53,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:53,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:53,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:53,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (1/1) ... [2020-10-14 08:42:53,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:42:53,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:42:53,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:42:53,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:42:53,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:42:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:42:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:42:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:42:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:42:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:42:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:42:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:42:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-14 08:42:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:42:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:42:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:42:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:42:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:42:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:42:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:42:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:42:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:42:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:42:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:42:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:42:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:42:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:42:53,909 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:42:53,909 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:42:53,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:42:53 BoogieIcfgContainer [2020-10-14 08:42:53,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:42:53,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:42:53,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:42:53,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:42:53,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:42:52" (1/3) ... [2020-10-14 08:42:53,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a20d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:42:53, skipping insertion in model container [2020-10-14 08:42:53,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:42:52" (2/3) ... [2020-10-14 08:42:53,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a20d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:42:53, skipping insertion in model container [2020-10-14 08:42:53,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:42:53" (3/3) ... [2020-10-14 08:42:53,924 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-14 08:42:53,935 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:42:53,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:42:53,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:42:53,983 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:42:53,983 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:42:53,984 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:42:53,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:42:53,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:42:53,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:42:53,984 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:42:53,984 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:42:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-10-14 08:42:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 08:42:54,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:42:54,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:42:54,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:42:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:42:54,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1081400223, now seen corresponding path program 1 times [2020-10-14 08:42:54,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:42:54,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495370725] [2020-10-14 08:42:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:42:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:54,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:55,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:56,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:59,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 08:42:59,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:42:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:42:59,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:59,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:59,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:42:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:42:59,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 08:42:59,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 08:42:59,710 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:42:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:42:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:42:59,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:42:59,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:42:59,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:42:59,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:42:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 08:42:59,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:42:59,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:42:59,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:42:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:42:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:42:59,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:42:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:42:59,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495370725] [2020-10-14 08:42:59,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:42:59,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:42:59,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30870427] [2020-10-14 08:42:59,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:42:59,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:42:59,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:42:59,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:42:59,797 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 6 states. [2020-10-14 08:43:00,018 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:43:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:00,746 INFO L93 Difference]: Finished difference Result 271 states and 439 transitions. [2020-10-14 08:43:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:43:00,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-14 08:43:00,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:00,763 INFO L225 Difference]: With dead ends: 271 [2020-10-14 08:43:00,763 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 08:43:00,768 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 08:43:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-10-14 08:43:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 08:43:00,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 248 transitions. [2020-10-14 08:43:00,833 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 248 transitions. Word has length 65 [2020-10-14 08:43:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:00,834 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 248 transitions. [2020-10-14 08:43:00,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 248 transitions. [2020-10-14 08:43:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 08:43:00,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:00,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:00,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:43:00,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:00,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:00,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1383588864, now seen corresponding path program 1 times [2020-10-14 08:43:00,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:00,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448566867] [2020-10-14 08:43:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:00,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:00,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:01,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:01,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:01,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:01,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:05,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:05,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 08:43:05,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:43:05,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:43:05,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:05,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:43:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 08:43:05,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:06,104 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:43:06,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:06,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:43:06,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:06,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:43:06,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:06,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448566867] [2020-10-14 08:43:06,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:06,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:43:06,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623795498] [2020-10-14 08:43:06,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:06,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:06,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:06,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:06,163 INFO L87 Difference]: Start difference. First operand 174 states and 248 transitions. Second operand 6 states. [2020-10-14 08:43:06,322 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:43:06,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:06,938 INFO L93 Difference]: Finished difference Result 307 states and 452 transitions. [2020-10-14 08:43:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:43:06,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-14 08:43:06,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:06,941 INFO L225 Difference]: With dead ends: 307 [2020-10-14 08:43:06,941 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 08:43:06,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 08:43:06,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-14 08:43:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 08:43:06,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 245 transitions. [2020-10-14 08:43:06,985 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 245 transitions. Word has length 66 [2020-10-14 08:43:06,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:06,989 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 245 transitions. [2020-10-14 08:43:06,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 245 transitions. [2020-10-14 08:43:06,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 08:43:06,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:06,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:06,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:43:06,994 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:06,994 INFO L82 PathProgramCache]: Analyzing trace with hash 2124104656, now seen corresponding path program 1 times [2020-10-14 08:43:06,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:06,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188211737] [2020-10-14 08:43:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:08,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:12,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 08:43:12,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:43:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 08:43:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:12,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:12,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:43:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 08:43:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:12,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:43:12,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:12,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:43:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:12,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188211737] [2020-10-14 08:43:12,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:12,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:43:12,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059727264] [2020-10-14 08:43:12,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:12,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:12,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:12,243 INFO L87 Difference]: Start difference. First operand 174 states and 245 transitions. Second operand 6 states. [2020-10-14 08:43:12,390 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 08:43:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:12,817 INFO L93 Difference]: Finished difference Result 311 states and 451 transitions. [2020-10-14 08:43:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:43:12,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-10-14 08:43:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:12,819 INFO L225 Difference]: With dead ends: 311 [2020-10-14 08:43:12,819 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 08:43:12,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:12,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 08:43:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-14 08:43:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 08:43:12,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 242 transitions. [2020-10-14 08:43:12,855 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 242 transitions. Word has length 67 [2020-10-14 08:43:12,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:12,856 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 242 transitions. [2020-10-14 08:43:12,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 242 transitions. [2020-10-14 08:43:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 08:43:12,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:12,861 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] [2020-10-14 08:43:12,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:43:12,861 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:12,862 INFO L82 PathProgramCache]: Analyzing trace with hash -481390063, now seen corresponding path program 1 times [2020-10-14 08:43:12,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:12,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881672955] [2020-10-14 08:43:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:17,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:17,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 08:43:17,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:43:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:43:17,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:17,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:43:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 08:43:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:18,116 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:43:18,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:18,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:18,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:18,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:43:18,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:18,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:43:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:18,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881672955] [2020-10-14 08:43:18,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:18,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:43:18,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901795272] [2020-10-14 08:43:18,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:18,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:18,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:18,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:18,176 INFO L87 Difference]: Start difference. First operand 174 states and 242 transitions. Second operand 6 states. [2020-10-14 08:43:18,379 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:43:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:18,849 INFO L93 Difference]: Finished difference Result 431 states and 628 transitions. [2020-10-14 08:43:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:43:18,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 08:43:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:18,852 INFO L225 Difference]: With dead ends: 431 [2020-10-14 08:43:18,852 INFO L226 Difference]: Without dead ends: 290 [2020-10-14 08:43:18,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:43:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-14 08:43:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2020-10-14 08:43:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-10-14 08:43:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 416 transitions. [2020-10-14 08:43:18,880 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 416 transitions. Word has length 68 [2020-10-14 08:43:18,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:18,881 INFO L479 AbstractCegarLoop]: Abstraction has 288 states and 416 transitions. [2020-10-14 08:43:18,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:18,881 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 416 transitions. [2020-10-14 08:43:18,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 08:43:18,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:18,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:18,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:43:18,883 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:18,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1161652225, now seen corresponding path program 1 times [2020-10-14 08:43:18,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:18,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396533576] [2020-10-14 08:43:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:18,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:18,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:19,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:19,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:19,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:20,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:20,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:23,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:23,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 08:43:23,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:43:23,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 08:43:23,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:23,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-14 08:43:23,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:43:23,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:24,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:24,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:24,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:43:24,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:24,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:24,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396533576] [2020-10-14 08:43:24,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:24,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:24,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535999417] [2020-10-14 08:43:24,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:24,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:24,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:24,086 INFO L87 Difference]: Start difference. First operand 288 states and 416 transitions. Second operand 4 states. [2020-10-14 08:43:24,221 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-14 08:43:24,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:24,739 INFO L93 Difference]: Finished difference Result 697 states and 1038 transitions. [2020-10-14 08:43:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:43:24,740 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-14 08:43:24,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:24,743 INFO L225 Difference]: With dead ends: 697 [2020-10-14 08:43:24,744 INFO L226 Difference]: Without dead ends: 499 [2020-10-14 08:43:24,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:43:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-14 08:43:24,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2020-10-14 08:43:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497 states. [2020-10-14 08:43:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 728 transitions. [2020-10-14 08:43:24,782 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 728 transitions. Word has length 69 [2020-10-14 08:43:24,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:24,783 INFO L479 AbstractCegarLoop]: Abstraction has 497 states and 728 transitions. [2020-10-14 08:43:24,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:43:24,783 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 728 transitions. [2020-10-14 08:43:24,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:43:24,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:24,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:24,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:43:24,786 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:24,786 INFO L82 PathProgramCache]: Analyzing trace with hash -64079762, now seen corresponding path program 1 times [2020-10-14 08:43:24,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:24,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932834611] [2020-10-14 08:43:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:24,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:25,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:26,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:27,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:29,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:29,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:43:29,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:43:29,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:43:29,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:29,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:43:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:43:29,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:43:29,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:29,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:29,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:29,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:29,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:29,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:29,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:43:29,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:29,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:29,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:29,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932834611] [2020-10-14 08:43:30,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:30,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 08:43:30,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411319021] [2020-10-14 08:43:30,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:43:30,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:30,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:43:30,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:43:30,003 INFO L87 Difference]: Start difference. First operand 497 states and 728 transitions. Second operand 6 states. [2020-10-14 08:43:30,194 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 08:43:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:31,083 INFO L93 Difference]: Finished difference Result 1221 states and 1819 transitions. [2020-10-14 08:43:31,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:43:31,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-14 08:43:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:31,090 INFO L225 Difference]: With dead ends: 1221 [2020-10-14 08:43:31,090 INFO L226 Difference]: Without dead ends: 843 [2020-10-14 08:43:31,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:43:31,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2020-10-14 08:43:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 688. [2020-10-14 08:43:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-14 08:43:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1020 transitions. [2020-10-14 08:43:31,181 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1020 transitions. Word has length 71 [2020-10-14 08:43:31,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:31,183 INFO L479 AbstractCegarLoop]: Abstraction has 688 states and 1020 transitions. [2020-10-14 08:43:31,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:43:31,184 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1020 transitions. [2020-10-14 08:43:31,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:43:31,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:31,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:31,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:43:31,187 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:31,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:31,187 INFO L82 PathProgramCache]: Analyzing trace with hash 2135056324, now seen corresponding path program 1 times [2020-10-14 08:43:31,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:31,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406065838] [2020-10-14 08:43:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:31,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:31,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:31,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:32,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:33,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:36,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:36,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:43:36,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:43:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:43:36,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:36,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:43:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:43:36,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:43:36,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:36,394 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-14 08:43:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:36,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:36,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:36,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:36,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:36,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:43:36,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:36,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:36,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:36,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:36,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:36,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406065838] [2020-10-14 08:43:36,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:36,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:43:36,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881047825] [2020-10-14 08:43:36,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:43:36,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:36,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:43:36,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:43:36,435 INFO L87 Difference]: Start difference. First operand 688 states and 1020 transitions. Second operand 7 states. [2020-10-14 08:43:36,602 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:43:37,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:37,448 INFO L93 Difference]: Finished difference Result 3043 states and 4581 transitions. [2020-10-14 08:43:37,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:43:37,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-14 08:43:37,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:37,463 INFO L225 Difference]: With dead ends: 3043 [2020-10-14 08:43:37,463 INFO L226 Difference]: Without dead ends: 2469 [2020-10-14 08:43:37,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:43:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2020-10-14 08:43:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 1111. [2020-10-14 08:43:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2020-10-14 08:43:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1666 transitions. [2020-10-14 08:43:37,580 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1666 transitions. Word has length 71 [2020-10-14 08:43:37,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:37,581 INFO L479 AbstractCegarLoop]: Abstraction has 1111 states and 1666 transitions. [2020-10-14 08:43:37,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:43:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1666 transitions. [2020-10-14 08:43:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:43:37,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:37,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:37,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:43:37,590 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:37,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1826947571, now seen corresponding path program 1 times [2020-10-14 08:43:37,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:37,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067401440] [2020-10-14 08:43:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:37,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:37,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:37,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:40,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:40,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:42,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:42,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:43:42,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:43:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:43:42,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:42,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:43:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:43:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:43:42,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:42,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:42,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:42,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:42,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:43:42,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:42,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:42,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:42,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:42,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067401440] [2020-10-14 08:43:42,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:42,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:43:42,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965903612] [2020-10-14 08:43:42,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:43:42,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:42,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:43:42,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:43:42,802 INFO L87 Difference]: Start difference. First operand 1111 states and 1666 transitions. Second operand 7 states. [2020-10-14 08:43:42,955 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:43:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:43,666 INFO L93 Difference]: Finished difference Result 3649 states and 5499 transitions. [2020-10-14 08:43:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:43:43,667 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-14 08:43:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:43,688 INFO L225 Difference]: With dead ends: 3649 [2020-10-14 08:43:43,688 INFO L226 Difference]: Without dead ends: 3075 [2020-10-14 08:43:43,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:43:43,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2020-10-14 08:43:43,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 1701. [2020-10-14 08:43:43,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1701 states. [2020-10-14 08:43:43,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 2568 transitions. [2020-10-14 08:43:43,880 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 2568 transitions. Word has length 71 [2020-10-14 08:43:43,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:43,880 INFO L479 AbstractCegarLoop]: Abstraction has 1701 states and 2568 transitions. [2020-10-14 08:43:43,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:43:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 2568 transitions. [2020-10-14 08:43:43,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:43:43,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:43,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:43,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:43:43,883 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:43,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:43,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1493967333, now seen corresponding path program 1 times [2020-10-14 08:43:43,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:43,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619844729] [2020-10-14 08:43:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:43,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:43,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:43,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:45,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:45,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:46,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:47,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:48,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:43:48,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:49,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:49,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:49,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:49,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:43:49,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:49,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:49,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619844729] [2020-10-14 08:43:49,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:49,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:49,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766667893] [2020-10-14 08:43:49,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:49,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:49,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:49,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:49,042 INFO L87 Difference]: Start difference. First operand 1701 states and 2568 transitions. Second operand 4 states. [2020-10-14 08:43:49,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:49,788 INFO L93 Difference]: Finished difference Result 4613 states and 6954 transitions. [2020-10-14 08:43:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 08:43:49,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 08:43:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:49,804 INFO L225 Difference]: With dead ends: 4613 [2020-10-14 08:43:49,804 INFO L226 Difference]: Without dead ends: 3059 [2020-10-14 08:43:49,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3059 states. [2020-10-14 08:43:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3059 to 2993. [2020-10-14 08:43:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2993 states. [2020-10-14 08:43:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 4428 transitions. [2020-10-14 08:43:50,032 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 4428 transitions. Word has length 71 [2020-10-14 08:43:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:50,033 INFO L479 AbstractCegarLoop]: Abstraction has 2993 states and 4428 transitions. [2020-10-14 08:43:50,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:43:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 4428 transitions. [2020-10-14 08:43:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:43:50,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:50,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:50,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:43:50,035 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1322341382, now seen corresponding path program 1 times [2020-10-14 08:43:50,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:50,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950688303] [2020-10-14 08:43:50,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:50,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:54,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:55,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:55,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:43:55,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:43:55,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:43:55,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:55,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:43:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-14 08:43:55,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 08:43:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:43:55,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:43:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:55,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:43:55,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:43:55,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:43:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:43:55,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:43:55,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:43:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:43:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:43:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:43:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:43:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:43:55,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950688303] [2020-10-14 08:43:55,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:43:55,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:43:55,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831166824] [2020-10-14 08:43:55,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:43:55,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:43:55,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:43:55,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:43:55,200 INFO L87 Difference]: Start difference. First operand 2993 states and 4428 transitions. Second operand 4 states. [2020-10-14 08:43:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:43:56,142 INFO L93 Difference]: Finished difference Result 6909 states and 10246 transitions. [2020-10-14 08:43:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:43:56,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-14 08:43:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:43:56,161 INFO L225 Difference]: With dead ends: 6909 [2020-10-14 08:43:56,162 INFO L226 Difference]: Without dead ends: 4063 [2020-10-14 08:43:56,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:43:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2020-10-14 08:43:56,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4061. [2020-10-14 08:43:56,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4061 states. [2020-10-14 08:43:56,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 5980 transitions. [2020-10-14 08:43:56,494 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 5980 transitions. Word has length 71 [2020-10-14 08:43:56,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:43:56,494 INFO L479 AbstractCegarLoop]: Abstraction has 4061 states and 5980 transitions. [2020-10-14 08:43:56,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:43:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 5980 transitions. [2020-10-14 08:43:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:43:56,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:43:56,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:43:56,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:43:56,496 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:43:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:43:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash 546936265, now seen corresponding path program 1 times [2020-10-14 08:43:56,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:43:56,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283646209] [2020-10-14 08:43:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:43:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:43:56,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:57,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:57,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:57,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:58,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:43:59,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:01,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:01,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:44:01,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:44:01,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:44:01,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:01,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 08:44:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:44:01,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:44:01,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:01,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:01,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:01,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:01,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:01,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:01,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:44:01,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:01,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:01,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:01,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:01,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283646209] [2020-10-14 08:44:01,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:01,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 08:44:01,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261812165] [2020-10-14 08:44:01,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 08:44:01,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:01,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 08:44:01,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:44:01,690 INFO L87 Difference]: Start difference. First operand 4061 states and 5980 transitions. Second operand 7 states. [2020-10-14 08:44:01,848 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:44:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:02,816 INFO L93 Difference]: Finished difference Result 9861 states and 14525 transitions. [2020-10-14 08:44:02,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:44:02,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-14 08:44:02,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:02,853 INFO L225 Difference]: With dead ends: 9861 [2020-10-14 08:44:02,854 INFO L226 Difference]: Without dead ends: 8451 [2020-10-14 08:44:02,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-14 08:44:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2020-10-14 08:44:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 5152. [2020-10-14 08:44:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5152 states. [2020-10-14 08:44:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7592 transitions. [2020-10-14 08:44:03,351 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7592 transitions. Word has length 71 [2020-10-14 08:44:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:03,351 INFO L479 AbstractCegarLoop]: Abstraction has 5152 states and 7592 transitions. [2020-10-14 08:44:03,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 08:44:03,351 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7592 transitions. [2020-10-14 08:44:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 08:44:03,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:03,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:03,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:44:03,354 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:03,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1092849331, now seen corresponding path program 1 times [2020-10-14 08:44:03,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:03,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383867075] [2020-10-14 08:44:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:03,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:05,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:06,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:08,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:08,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 08:44:08,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-14 08:44:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:44:08,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:08,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:44:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:44:08,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 08:44:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:08,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:08,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:08,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:08,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:08,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:08,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:44:08,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:08,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:08,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:08,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:08,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383867075] [2020-10-14 08:44:08,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:08,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:44:08,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825994438] [2020-10-14 08:44:08,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:44:08,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:08,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:44:08,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:44:08,672 INFO L87 Difference]: Start difference. First operand 5152 states and 7592 transitions. Second operand 9 states. [2020-10-14 08:44:08,835 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:44:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:10,572 INFO L93 Difference]: Finished difference Result 15402 states and 22626 transitions. [2020-10-14 08:44:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:44:10,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-14 08:44:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:10,609 INFO L225 Difference]: With dead ends: 15402 [2020-10-14 08:44:10,609 INFO L226 Difference]: Without dead ends: 10407 [2020-10-14 08:44:10,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-14 08:44:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2020-10-14 08:44:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 5152. [2020-10-14 08:44:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5152 states. [2020-10-14 08:44:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7583 transitions. [2020-10-14 08:44:11,161 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7583 transitions. Word has length 72 [2020-10-14 08:44:11,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:11,161 INFO L479 AbstractCegarLoop]: Abstraction has 5152 states and 7583 transitions. [2020-10-14 08:44:11,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:44:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7583 transitions. [2020-10-14 08:44:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 08:44:11,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:11,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:11,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:44:11,164 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:11,164 INFO L82 PathProgramCache]: Analyzing trace with hash 719547168, now seen corresponding path program 1 times [2020-10-14 08:44:11,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:11,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949858860] [2020-10-14 08:44:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:11,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:11,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:11,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:13,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:16,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:16,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 08:44:16,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 08:44:16,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-14 08:44:16,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:16,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:44:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:44:16,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 08:44:16,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:44:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:16,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:16,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:16,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:16,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:44:16,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:16,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:16,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:16,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:44:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:16,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949858860] [2020-10-14 08:44:16,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:16,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:44:16,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634286607] [2020-10-14 08:44:16,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:44:16,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:16,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:44:16,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:44:16,522 INFO L87 Difference]: Start difference. First operand 5152 states and 7583 transitions. Second operand 11 states. [2020-10-14 08:44:16,686 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-14 08:44:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:18,539 INFO L93 Difference]: Finished difference Result 15453 states and 22683 transitions. [2020-10-14 08:44:18,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 08:44:18,540 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-10-14 08:44:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:18,567 INFO L225 Difference]: With dead ends: 15453 [2020-10-14 08:44:18,568 INFO L226 Difference]: Without dead ends: 10422 [2020-10-14 08:44:18,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-10-14 08:44:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10422 states. [2020-10-14 08:44:19,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10422 to 5152. [2020-10-14 08:44:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5152 states. [2020-10-14 08:44:19,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7577 transitions. [2020-10-14 08:44:19,310 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7577 transitions. Word has length 73 [2020-10-14 08:44:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:19,311 INFO L479 AbstractCegarLoop]: Abstraction has 5152 states and 7577 transitions. [2020-10-14 08:44:19,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:44:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7577 transitions. [2020-10-14 08:44:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 08:44:19,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:19,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:44:19,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:44:19,312 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:19,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:19,312 INFO L82 PathProgramCache]: Analyzing trace with hash 965416182, now seen corresponding path program 1 times [2020-10-14 08:44:19,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:19,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860027079] [2020-10-14 08:44:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:19,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:19,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:19,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:21,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:22,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:23,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:24,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:24,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 08:44:24,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:44:24,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 08:44:24,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:24,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:44:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:44:24,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 08:44:24,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:24,526 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2020-10-14 08:44:24,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:24,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:24,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:24,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:24,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:24,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:24,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860027079] [2020-10-14 08:44:24,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:24,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:44:24,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281937408] [2020-10-14 08:44:24,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:44:24,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:24,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:44:24,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:44:24,684 INFO L87 Difference]: Start difference. First operand 5152 states and 7577 transitions. Second operand 10 states. [2020-10-14 08:44:24,827 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 08:44:26,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:26,793 INFO L93 Difference]: Finished difference Result 12667 states and 18680 transitions. [2020-10-14 08:44:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:44:26,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 73 [2020-10-14 08:44:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:26,815 INFO L225 Difference]: With dead ends: 12667 [2020-10-14 08:44:26,815 INFO L226 Difference]: Without dead ends: 10157 [2020-10-14 08:44:26,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:44:26,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2020-10-14 08:44:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5132. [2020-10-14 08:44:27,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5132 states. [2020-10-14 08:44:27,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5132 states to 5132 states and 7545 transitions. [2020-10-14 08:44:27,604 INFO L78 Accepts]: Start accepts. Automaton has 5132 states and 7545 transitions. Word has length 73 [2020-10-14 08:44:27,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:27,604 INFO L479 AbstractCegarLoop]: Abstraction has 5132 states and 7545 transitions. [2020-10-14 08:44:27,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:44:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 5132 states and 7545 transitions. [2020-10-14 08:44:27,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:44:27,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:27,606 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] [2020-10-14 08:44:27,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:44:27,606 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:27,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1298688794, now seen corresponding path program 1 times [2020-10-14 08:44:27,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:27,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821116773] [2020-10-14 08:44:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:27,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:27,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:27,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:28,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:28,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:29,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:32,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:32,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:44:32,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 08:44:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:44:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:32,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:44:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:44:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 08:44:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:32,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:32,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:32,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:32,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:32,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:44:32,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:32,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:32,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:32,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:32,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:32,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821116773] [2020-10-14 08:44:32,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:32,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:44:32,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222817980] [2020-10-14 08:44:32,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:44:32,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:32,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:44:32,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:44:32,945 INFO L87 Difference]: Start difference. First operand 5132 states and 7545 transitions. Second operand 10 states. [2020-10-14 08:44:33,085 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-14 08:44:35,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:35,570 INFO L93 Difference]: Finished difference Result 12643 states and 18642 transitions. [2020-10-14 08:44:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:44:35,570 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 74 [2020-10-14 08:44:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:35,588 INFO L225 Difference]: With dead ends: 12643 [2020-10-14 08:44:35,589 INFO L226 Difference]: Without dead ends: 10157 [2020-10-14 08:44:35,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:44:35,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2020-10-14 08:44:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5129. [2020-10-14 08:44:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5129 states. [2020-10-14 08:44:36,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5129 states to 5129 states and 7536 transitions. [2020-10-14 08:44:36,501 INFO L78 Accepts]: Start accepts. Automaton has 5129 states and 7536 transitions. Word has length 74 [2020-10-14 08:44:36,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:36,501 INFO L479 AbstractCegarLoop]: Abstraction has 5129 states and 7536 transitions. [2020-10-14 08:44:36,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:44:36,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5129 states and 7536 transitions. [2020-10-14 08:44:36,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:44:36,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:36,503 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] [2020-10-14 08:44:36,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:44:36,503 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:36,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:36,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1244920701, now seen corresponding path program 1 times [2020-10-14 08:44:36,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:36,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503496496] [2020-10-14 08:44:36,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:36,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:36,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:36,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:37,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:38,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:40,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:41,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:41,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:44:41,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:44:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:44:41,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:41,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:44:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:44:41,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 08:44:41,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:41,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:41,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:41,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:41,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:41,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:44:41,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:41,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:41,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:41,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503496496] [2020-10-14 08:44:41,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:41,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:44:41,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412658022] [2020-10-14 08:44:41,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:44:41,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:41,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:44:41,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:44:41,701 INFO L87 Difference]: Start difference. First operand 5129 states and 7536 transitions. Second operand 5 states. [2020-10-14 08:44:41,843 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 08:44:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:43,231 INFO L93 Difference]: Finished difference Result 11936 states and 17603 transitions. [2020-10-14 08:44:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:44:43,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-14 08:44:43,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:43,242 INFO L225 Difference]: With dead ends: 11936 [2020-10-14 08:44:43,242 INFO L226 Difference]: Without dead ends: 6950 [2020-10-14 08:44:43,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 08:44:43,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6950 states. [2020-10-14 08:44:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6950 to 6906. [2020-10-14 08:44:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6906 states. [2020-10-14 08:44:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6906 states to 6906 states and 10091 transitions. [2020-10-14 08:44:44,422 INFO L78 Accepts]: Start accepts. Automaton has 6906 states and 10091 transitions. Word has length 74 [2020-10-14 08:44:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:44,422 INFO L479 AbstractCegarLoop]: Abstraction has 6906 states and 10091 transitions. [2020-10-14 08:44:44,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:44:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 6906 states and 10091 transitions. [2020-10-14 08:44:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 08:44:44,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:44,424 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] [2020-10-14 08:44:44,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:44:44,424 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:44,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2107252161, now seen corresponding path program 1 times [2020-10-14 08:44:44,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:44,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494539682] [2020-10-14 08:44:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:49,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:49,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:49,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 08:44:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:44:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:44:49,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:49,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:44:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 08:44:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:44:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:49,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:49,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:49,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:49,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:49,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:49,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:44:49,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:49,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:44:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:49,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:44:49,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:49,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494539682] [2020-10-14 08:44:49,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:49,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:44:49,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933372052] [2020-10-14 08:44:49,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:44:49,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:49,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:44:49,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:44:49,604 INFO L87 Difference]: Start difference. First operand 6906 states and 10091 transitions. Second operand 5 states. [2020-10-14 08:44:51,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:44:51,475 INFO L93 Difference]: Finished difference Result 10680 states and 15564 transitions. [2020-10-14 08:44:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:44:51,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-14 08:44:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:44:51,487 INFO L225 Difference]: With dead ends: 10680 [2020-10-14 08:44:51,488 INFO L226 Difference]: Without dead ends: 10678 [2020-10-14 08:44:51,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:44:51,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10678 states. [2020-10-14 08:44:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10678 to 6938. [2020-10-14 08:44:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6938 states. [2020-10-14 08:44:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 10067 transitions. [2020-10-14 08:44:52,618 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 10067 transitions. Word has length 74 [2020-10-14 08:44:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:44:52,618 INFO L479 AbstractCegarLoop]: Abstraction has 6938 states and 10067 transitions. [2020-10-14 08:44:52,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:44:52,618 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 10067 transitions. [2020-10-14 08:44:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 08:44:52,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:44:52,619 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] [2020-10-14 08:44:52,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:44:52,620 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:44:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:44:52,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1700876253, now seen corresponding path program 1 times [2020-10-14 08:44:52,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:44:52,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935992619] [2020-10-14 08:44:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:44:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:52,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:52,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:53,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:53,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:53,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:54,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:57,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:57,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 08:44:57,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:44:57,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 08:44:57,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:57,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:44:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:44:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:44:57,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:57,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:44:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:44:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:44:57,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:44:57,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:44:57,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:44:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:44:57,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:44:57,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:44:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:44:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:44:57,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:44:57,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:44:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:44:57,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935992619] [2020-10-14 08:44:57,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:44:57,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:44:57,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112616864] [2020-10-14 08:44:57,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:44:57,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:44:57,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:44:57,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:44:57,902 INFO L87 Difference]: Start difference. First operand 6938 states and 10067 transitions. Second operand 11 states. [2020-10-14 08:44:58,070 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-14 08:45:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:01,479 INFO L93 Difference]: Finished difference Result 22261 states and 32329 transitions. [2020-10-14 08:45:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 08:45:01,479 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2020-10-14 08:45:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:01,497 INFO L225 Difference]: With dead ends: 22261 [2020-10-14 08:45:01,497 INFO L226 Difference]: Without dead ends: 15430 [2020-10-14 08:45:01,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-14 08:45:01,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15430 states. [2020-10-14 08:45:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15430 to 6938. [2020-10-14 08:45:02,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6938 states. [2020-10-14 08:45:02,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 10064 transitions. [2020-10-14 08:45:02,778 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 10064 transitions. Word has length 75 [2020-10-14 08:45:02,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:02,779 INFO L479 AbstractCegarLoop]: Abstraction has 6938 states and 10064 transitions. [2020-10-14 08:45:02,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 08:45:02,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 10064 transitions. [2020-10-14 08:45:02,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-14 08:45:02,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:02,780 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] [2020-10-14 08:45:02,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:45:02,780 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:02,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1215304404, now seen corresponding path program 1 times [2020-10-14 08:45:02,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:02,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51488223] [2020-10-14 08:45:02,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:02,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:02,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:05,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:05,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 08:45:05,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:45:05,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3122 [2020-10-14 08:45:05,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:05,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 08:45:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:45:05,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 08:45:05,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:06,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:06,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:06,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:06,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:06,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:06,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:45:06,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:06,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:06,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:06,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51488223] [2020-10-14 08:45:06,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:06,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 08:45:06,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661915509] [2020-10-14 08:45:06,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 08:45:06,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:06,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 08:45:06,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-14 08:45:06,343 INFO L87 Difference]: Start difference. First operand 6938 states and 10064 transitions. Second operand 10 states. [2020-10-14 08:45:06,718 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 126 [2020-10-14 08:45:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:09,304 INFO L93 Difference]: Finished difference Result 13670 states and 19868 transitions. [2020-10-14 08:45:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:45:09,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-10-14 08:45:09,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:09,315 INFO L225 Difference]: With dead ends: 13670 [2020-10-14 08:45:09,315 INFO L226 Difference]: Without dead ends: 10296 [2020-10-14 08:45:09,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-14 08:45:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2020-10-14 08:45:10,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 6902. [2020-10-14 08:45:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6902 states. [2020-10-14 08:45:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6902 states to 6902 states and 10019 transitions. [2020-10-14 08:45:10,569 INFO L78 Accepts]: Start accepts. Automaton has 6902 states and 10019 transitions. Word has length 75 [2020-10-14 08:45:10,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:10,570 INFO L479 AbstractCegarLoop]: Abstraction has 6902 states and 10019 transitions. [2020-10-14 08:45:10,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 08:45:10,570 INFO L276 IsEmpty]: Start isEmpty. Operand 6902 states and 10019 transitions. [2020-10-14 08:45:10,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 08:45:10,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:10,570 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] [2020-10-14 08:45:10,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 08:45:10,571 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:10,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:10,571 INFO L82 PathProgramCache]: Analyzing trace with hash 866891917, now seen corresponding path program 1 times [2020-10-14 08:45:10,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:10,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523690209] [2020-10-14 08:45:10,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:10,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:11,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:11,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 08:45:11,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:45:11,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1330 [2020-10-14 08:45:11,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:11,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 08:45:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 08:45:11,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 08:45:11,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:12,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:12,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:12,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:12,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 08:45:12,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:12,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:12,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:12,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:12,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523690209] [2020-10-14 08:45:12,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:12,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 08:45:12,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700163678] [2020-10-14 08:45:12,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 08:45:12,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:12,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 08:45:12,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:45:12,237 INFO L87 Difference]: Start difference. First operand 6902 states and 10019 transitions. Second operand 9 states. [2020-10-14 08:45:15,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:15,414 INFO L93 Difference]: Finished difference Result 11967 states and 17398 transitions. [2020-10-14 08:45:15,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 08:45:15,414 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-14 08:45:15,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:15,425 INFO L225 Difference]: With dead ends: 11967 [2020-10-14 08:45:15,425 INFO L226 Difference]: Without dead ends: 10194 [2020-10-14 08:45:15,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 08:45:15,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10194 states. [2020-10-14 08:45:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10194 to 6800. [2020-10-14 08:45:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6800 states. [2020-10-14 08:45:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 9875 transitions. [2020-10-14 08:45:16,896 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 9875 transitions. Word has length 76 [2020-10-14 08:45:16,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:16,897 INFO L479 AbstractCegarLoop]: Abstraction has 6800 states and 9875 transitions. [2020-10-14 08:45:16,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 08:45:16,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 9875 transitions. [2020-10-14 08:45:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 08:45:16,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:16,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:45:16,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 08:45:16,901 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:16,901 INFO L82 PathProgramCache]: Analyzing trace with hash 400650785, now seen corresponding path program 1 times [2020-10-14 08:45:16,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:16,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302779967] [2020-10-14 08:45:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:16,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:16,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:17,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:17,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:21,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:21,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 08:45:21,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:45:21,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:45:21,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:21,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 08:45:21,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:45:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:22,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:22,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:22,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:22,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:22,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:22,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:45:22,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:22,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:22,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:22,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:22,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302779967] [2020-10-14 08:45:22,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:22,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:45:22,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418962721] [2020-10-14 08:45:22,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:45:22,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:22,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:45:22,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:45:22,081 INFO L87 Difference]: Start difference. First operand 6800 states and 9875 transitions. Second operand 4 states. [2020-10-14 08:45:22,212 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:45:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:25,380 INFO L93 Difference]: Finished difference Result 19612 states and 28365 transitions. [2020-10-14 08:45:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:45:25,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-14 08:45:25,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:25,396 INFO L225 Difference]: With dead ends: 19612 [2020-10-14 08:45:25,397 INFO L226 Difference]: Without dead ends: 12902 [2020-10-14 08:45:25,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:45:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12902 states. [2020-10-14 08:45:28,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12902 to 12292. [2020-10-14 08:45:28,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12292 states. [2020-10-14 08:45:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12292 states to 12292 states and 17675 transitions. [2020-10-14 08:45:28,093 INFO L78 Accepts]: Start accepts. Automaton has 12292 states and 17675 transitions. Word has length 100 [2020-10-14 08:45:28,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:28,093 INFO L479 AbstractCegarLoop]: Abstraction has 12292 states and 17675 transitions. [2020-10-14 08:45:28,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:45:28,093 INFO L276 IsEmpty]: Start isEmpty. Operand 12292 states and 17675 transitions. [2020-10-14 08:45:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 08:45:28,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:28,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:45:28,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 08:45:28,096 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:28,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:28,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1459245720, now seen corresponding path program 1 times [2020-10-14 08:45:28,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:28,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872495126] [2020-10-14 08:45:28,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:28,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:28,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:32,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:32,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 08:45:32,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:45:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4832 [2020-10-14 08:45:32,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:32,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-14 08:45:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 08:45:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:33,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:33,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:33,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:33,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:45:33,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:33,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:33,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872495126] [2020-10-14 08:45:33,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:33,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:45:33,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935499003] [2020-10-14 08:45:33,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:45:33,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:33,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:45:33,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:45:33,107 INFO L87 Difference]: Start difference. First operand 12292 states and 17675 transitions. Second operand 4 states. [2020-10-14 08:45:33,235 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:45:38,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:45:38,790 INFO L93 Difference]: Finished difference Result 35480 states and 50701 transitions. [2020-10-14 08:45:38,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:45:38,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-14 08:45:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:45:38,818 INFO L225 Difference]: With dead ends: 35480 [2020-10-14 08:45:38,818 INFO L226 Difference]: Without dead ends: 23278 [2020-10-14 08:45:38,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:45:38,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23278 states. [2020-10-14 08:45:43,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23278 to 22212. [2020-10-14 08:45:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22212 states. [2020-10-14 08:45:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22212 states to 22212 states and 31451 transitions. [2020-10-14 08:45:43,786 INFO L78 Accepts]: Start accepts. Automaton has 22212 states and 31451 transitions. Word has length 101 [2020-10-14 08:45:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:45:43,786 INFO L479 AbstractCegarLoop]: Abstraction has 22212 states and 31451 transitions. [2020-10-14 08:45:43,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:45:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 22212 states and 31451 transitions. [2020-10-14 08:45:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 08:45:43,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:43,788 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:45:43,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 08:45:43,788 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:43,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1902892181, now seen corresponding path program 1 times [2020-10-14 08:45:43,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:43,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978032330] [2020-10-14 08:45:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:43,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:43,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:43,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:44,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:46,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:47,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:47,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:47,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:47,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:47,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:48,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:48,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:48,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 08:45:48,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 08:45:48,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 08:45:48,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:48,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:45:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 08:45:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 08:45:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:45:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:48,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:45:48,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:45:48,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:45:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:45:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:45:48,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:45:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:45:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:45:48,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:45:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:45:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:45:48,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978032330] [2020-10-14 08:45:48,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:45:48,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:45:48,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767867162] [2020-10-14 08:45:48,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:45:48,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:45:48,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:45:48,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:45:48,973 INFO L87 Difference]: Start difference. First operand 22212 states and 31451 transitions. Second operand 4 states. [2020-10-14 08:45:49,097 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:46:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:00,006 INFO L93 Difference]: Finished difference Result 64024 states and 89901 transitions. [2020-10-14 08:46:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:00,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-14 08:46:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:00,053 INFO L225 Difference]: With dead ends: 64024 [2020-10-14 08:46:00,053 INFO L226 Difference]: Without dead ends: 41902 [2020-10-14 08:46:00,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41902 states. [2020-10-14 08:46:09,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41902 to 39468. [2020-10-14 08:46:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39468 states. [2020-10-14 08:46:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39468 states to 39468 states and 54899 transitions. [2020-10-14 08:46:09,088 INFO L78 Accepts]: Start accepts. Automaton has 39468 states and 54899 transitions. Word has length 102 [2020-10-14 08:46:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:09,088 INFO L479 AbstractCegarLoop]: Abstraction has 39468 states and 54899 transitions. [2020-10-14 08:46:09,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:46:09,088 INFO L276 IsEmpty]: Start isEmpty. Operand 39468 states and 54899 transitions. [2020-10-14 08:46:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 08:46:09,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:09,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:09,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 08:46:09,091 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:09,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:09,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1153380726, now seen corresponding path program 1 times [2020-10-14 08:46:09,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:09,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743682721] [2020-10-14 08:46:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:11,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:13,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:14,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 08:46:14,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 08:46:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 08:46:14,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:14,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:14,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-14 08:46:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 08:46:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:14,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:14,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:46:14,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:14,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:14,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743682721] [2020-10-14 08:46:14,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:14,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:46:14,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043319467] [2020-10-14 08:46:14,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:46:14,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:14,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:46:14,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:46:14,299 INFO L87 Difference]: Start difference. First operand 39468 states and 54899 transitions. Second operand 4 states. [2020-10-14 08:46:14,426 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-14 08:46:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:28,742 INFO L93 Difference]: Finished difference Result 86114 states and 120399 transitions. [2020-10-14 08:46:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:28,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-14 08:46:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:28,802 INFO L225 Difference]: With dead ends: 86114 [2020-10-14 08:46:28,803 INFO L226 Difference]: Without dead ends: 56508 [2020-10-14 08:46:28,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56508 states.