/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:05:28,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:05:28,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:05:28,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:05:28,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:05:28,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:05:28,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:05:28,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:05:28,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:05:28,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:05:28,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:05:28,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:05:28,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:05:28,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:05:28,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:05:28,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:05:28,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:05:28,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:05:28,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:05:28,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:05:28,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:05:28,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:05:28,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:05:28,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:05:28,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:05:28,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:05:28,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:05:28,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:05:28,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:05:28,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:05:28,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:05:28,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:05:28,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:05:28,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:05:28,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:05:28,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:05:28,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:05:28,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:05:28,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:05:28,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:05:28,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:05:28,937 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 [2020-10-15 03:05:28,960 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:05:28,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:05:28,962 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:05:28,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:05:28,962 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:05:28,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:05:28,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:05:28,963 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:05:28,963 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:05:28,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:05:28,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:05:28,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:05:28,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:05:28,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:05:28,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:05:28,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:05:28,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:05:28,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:05:28,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:05:28,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:05:28,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:05:28,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:05:28,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:05:28,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:05:28,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:05:28,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:05:28,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:05:28,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:05:28,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:05:28,967 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:05:29,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:05:29,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:05:29,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:05:29,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:05:29,344 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:05:29,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:05:29,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bcc60b7/fdc802799e2b4089b7f7d783873fe987/FLAG83fa43801 [2020-10-15 03:05:30,119 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:05:30,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:05:30,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bcc60b7/fdc802799e2b4089b7f7d783873fe987/FLAG83fa43801 [2020-10-15 03:05:30,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/71bcc60b7/fdc802799e2b4089b7f7d783873fe987 [2020-10-15 03:05:30,448 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:05:30,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:05:30,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:05:30,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:05:30,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:05:30,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:30" (1/1) ... [2020-10-15 03:05:30,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aae5b2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:30, skipping insertion in model container [2020-10-15 03:05:30,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:05:30" (1/1) ... [2020-10-15 03:05:30,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:05:30,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:05:31,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:05:31,697 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:05:32,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:05:32,155 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:05:32,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32 WrapperNode [2020-10-15 03:05:32,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:05:32,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:05:32,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:05:32,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:05:32,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (1/1) ... [2020-10-15 03:05:32,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (1/1) ... [2020-10-15 03:05:32,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (1/1) ... [2020-10-15 03:05:32,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (1/1) ... [2020-10-15 03:05:32,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (1/1) ... [2020-10-15 03:05:32,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (1/1) ... [2020-10-15 03:05:32,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (1/1) ... [2020-10-15 03:05:32,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:05:32,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:05:32,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:05:32,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:05:32,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:05:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:05:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:05:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:05:32,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:05:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:05:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:05:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:05:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:05:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:05:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:05:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:05:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:05:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:05:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:05:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:05:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:05:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:05:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:05:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:05:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:05:32,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:05:32,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:05:35,016 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:05:35,017 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:05:35,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:35 BoogieIcfgContainer [2020-10-15 03:05:35,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:05:35,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:05:35,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:05:35,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:05:35,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:05:30" (1/3) ... [2020-10-15 03:05:35,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2f903a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:35, skipping insertion in model container [2020-10-15 03:05:35,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:05:32" (2/3) ... [2020-10-15 03:05:35,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c2f903a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:05:35, skipping insertion in model container [2020-10-15 03:05:35,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:05:35" (3/3) ... [2020-10-15 03:05:35,043 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:05:35,054 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:05:35,064 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:05:35,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:05:35,111 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:05:35,111 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:05:35,111 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:05:35,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:05:35,112 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:05:35,112 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:05:35,112 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:05:35,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:05:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states. [2020-10-15 03:05:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-15 03:05:35,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:35,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:35,193 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:35,204 INFO L82 PathProgramCache]: Analyzing trace with hash 373838738, now seen corresponding path program 1 times [2020-10-15 03:05:35,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:35,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209015842] [2020-10-15 03:05:35,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:36,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:38,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:39,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:39,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:39,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:40,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:40,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:40,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:41,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:41,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:41,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-15 03:05:41,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:05:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-15 03:05:41,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:41,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:41,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-15 03:05:41,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 03:05:42,347 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:05:42,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:42,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:42,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:42,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:42,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:42,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:05:42,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:42,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:42,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:42,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:42,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:42,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:42,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209015842] [2020-10-15 03:05:42,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:42,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:42,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951695490] [2020-10-15 03:05:42,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:42,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:42,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:42,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:42,729 INFO L87 Difference]: Start difference. First operand 737 states. Second operand 5 states. [2020-10-15 03:05:51,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:05:51,716 INFO L93 Difference]: Finished difference Result 2164 states and 3854 transitions. [2020-10-15 03:05:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 03:05:51,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-15 03:05:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:05:51,788 INFO L225 Difference]: With dead ends: 2164 [2020-10-15 03:05:51,789 INFO L226 Difference]: Without dead ends: 1432 [2020-10-15 03:05:51,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:05:51,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-15 03:05:52,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1430. [2020-10-15 03:05:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2020-10-15 03:05:52,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2203 transitions. [2020-10-15 03:05:52,030 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2203 transitions. Word has length 314 [2020-10-15 03:05:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:05:52,034 INFO L479 AbstractCegarLoop]: Abstraction has 1430 states and 2203 transitions. [2020-10-15 03:05:52,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:05:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2203 transitions. [2020-10-15 03:05:52,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-15 03:05:52,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:05:52,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:05:52,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:05:52,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:05:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:05:52,053 INFO L82 PathProgramCache]: Analyzing trace with hash -665055542, now seen corresponding path program 1 times [2020-10-15 03:05:52,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:05:52,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512613434] [2020-10-15 03:05:52,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:05:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:53,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:53,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:53,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:53,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:54,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:57,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:57,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-15 03:05:57,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:05:57,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-15 03:05:57,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:57,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:05:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:05:57,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-15 03:05:57,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:57,960 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:05:57,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:05:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:05:57,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:05:57,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:05:57,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:05:57,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:05:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:05:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:05:57,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:05:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:05:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:05:57,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:05:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:05:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:05:58,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512613434] [2020-10-15 03:05:58,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:05:58,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:05:58,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501846245] [2020-10-15 03:05:58,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:05:58,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:05:58,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:05:58,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:05:58,354 INFO L87 Difference]: Start difference. First operand 1430 states and 2203 transitions. Second operand 5 states. [2020-10-15 03:06:06,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:06,360 INFO L93 Difference]: Finished difference Result 4080 states and 6248 transitions. [2020-10-15 03:06:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:06,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-15 03:06:06,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:06,381 INFO L225 Difference]: With dead ends: 4080 [2020-10-15 03:06:06,381 INFO L226 Difference]: Without dead ends: 2790 [2020-10-15 03:06:06,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2020-10-15 03:06:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 2788. [2020-10-15 03:06:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2788 states. [2020-10-15 03:06:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 4270 transitions. [2020-10-15 03:06:06,544 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 4270 transitions. Word has length 316 [2020-10-15 03:06:06,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:06,545 INFO L479 AbstractCegarLoop]: Abstraction has 2788 states and 4270 transitions. [2020-10-15 03:06:06,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 4270 transitions. [2020-10-15 03:06:06,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-15 03:06:06,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:06,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:06,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:06:06,559 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:06,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1720212537, now seen corresponding path program 1 times [2020-10-15 03:06:06,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:06,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134760868] [2020-10-15 03:06:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:06,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:07,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:07,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:07,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:07,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:07,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:11,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:11,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:11,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-15 03:06:11,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 03:06:11,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-15 03:06:11,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:11,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:11,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-15 03:06:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:12,703 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:06:12,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:12,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:12,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:12,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:12,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:12,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:06:12,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:12,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:12,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:12,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:12,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:13,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134760868] [2020-10-15 03:06:13,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:13,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:13,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883451592] [2020-10-15 03:06:13,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:13,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:13,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:13,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:13,075 INFO L87 Difference]: Start difference. First operand 2788 states and 4270 transitions. Second operand 5 states. [2020-10-15 03:06:20,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:20,225 INFO L93 Difference]: Finished difference Result 8093 states and 12343 transitions. [2020-10-15 03:06:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:20,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-15 03:06:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:20,251 INFO L225 Difference]: With dead ends: 8093 [2020-10-15 03:06:20,251 INFO L226 Difference]: Without dead ends: 5459 [2020-10-15 03:06:20,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:20,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5459 states. [2020-10-15 03:06:20,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5459 to 5457. [2020-10-15 03:06:20,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5457 states. [2020-10-15 03:06:20,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 8289 transitions. [2020-10-15 03:06:20,555 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 8289 transitions. Word has length 318 [2020-10-15 03:06:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:20,557 INFO L479 AbstractCegarLoop]: Abstraction has 5457 states and 8289 transitions. [2020-10-15 03:06:20,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 8289 transitions. [2020-10-15 03:06:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-15 03:06:20,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:20,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:20,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:06:20,575 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1489923985, now seen corresponding path program 1 times [2020-10-15 03:06:20,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:20,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577567496] [2020-10-15 03:06:20,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:20,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:20,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:20,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:20,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:21,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:21,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:21,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:21,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:21,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:21,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:25,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:25,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-15 03:06:25,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:06:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-15 03:06:25,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:25,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-15 03:06:25,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:26,182 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:06:26,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:26,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:26,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:26,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:26,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:26,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:06:26,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:26,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:26,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:26,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:26,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:26,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577567496] [2020-10-15 03:06:26,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:26,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:26,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055540655] [2020-10-15 03:06:26,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:26,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:26,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:26,385 INFO L87 Difference]: Start difference. First operand 5457 states and 8289 transitions. Second operand 5 states. [2020-10-15 03:06:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:34,647 INFO L93 Difference]: Finished difference Result 15879 states and 24029 transitions. [2020-10-15 03:06:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:34,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-15 03:06:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:34,687 INFO L225 Difference]: With dead ends: 15879 [2020-10-15 03:06:34,688 INFO L226 Difference]: Without dead ends: 10701 [2020-10-15 03:06:34,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:34,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10701 states. [2020-10-15 03:06:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10701 to 10699. [2020-10-15 03:06:35,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10699 states. [2020-10-15 03:06:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10699 states to 10699 states and 16141 transitions. [2020-10-15 03:06:35,562 INFO L78 Accepts]: Start accepts. Automaton has 10699 states and 16141 transitions. Word has length 320 [2020-10-15 03:06:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:35,562 INFO L479 AbstractCegarLoop]: Abstraction has 10699 states and 16141 transitions. [2020-10-15 03:06:35,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 10699 states and 16141 transitions. [2020-10-15 03:06:35,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-15 03:06:35,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:35,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:35,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:06:35,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:35,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:35,587 INFO L82 PathProgramCache]: Analyzing trace with hash 2030470929, now seen corresponding path program 1 times [2020-10-15 03:06:35,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:35,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103955841] [2020-10-15 03:06:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:35,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:35,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:35,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:35,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:36,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:36,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:40,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:40,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-15 03:06:40,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:06:40,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-15 03:06:40,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:40,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:06:40,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:06:40,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-15 03:06:40,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:41,414 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:06:41,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:41,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:41,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:41,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 03:06:41,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:41,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:41,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:06:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:41,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103955841] [2020-10-15 03:06:41,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:41,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:06:41,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802272386] [2020-10-15 03:06:41,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:06:41,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:41,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:06:41,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:06:41,798 INFO L87 Difference]: Start difference. First operand 10699 states and 16141 transitions. Second operand 5 states. [2020-10-15 03:06:50,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:06:50,188 INFO L93 Difference]: Finished difference Result 30727 states and 46051 transitions. [2020-10-15 03:06:50,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:06:50,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-15 03:06:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:06:50,245 INFO L225 Difference]: With dead ends: 30727 [2020-10-15 03:06:50,245 INFO L226 Difference]: Without dead ends: 20749 [2020-10-15 03:06:50,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:06:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20749 states. [2020-10-15 03:06:51,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20749 to 20747. [2020-10-15 03:06:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20747 states. [2020-10-15 03:06:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20747 states to 20747 states and 31009 transitions. [2020-10-15 03:06:51,415 INFO L78 Accepts]: Start accepts. Automaton has 20747 states and 31009 transitions. Word has length 322 [2020-10-15 03:06:51,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:06:51,415 INFO L479 AbstractCegarLoop]: Abstraction has 20747 states and 31009 transitions. [2020-10-15 03:06:51,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:06:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 20747 states and 31009 transitions. [2020-10-15 03:06:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-15 03:06:51,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:06:51,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:06:51,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:06:51,466 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:06:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:06:51,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1478706763, now seen corresponding path program 1 times [2020-10-15 03:06:51,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:06:51,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712498539] [2020-10-15 03:06:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:06:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:51,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:51,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:51,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:51,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:51,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:51,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:53,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:55,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:55,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:56,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:56,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-15 03:06:56,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:06:56,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 03:06:56,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:56,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:06:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-15 03:06:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-15 03:06:56,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:06:57,173 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:06:57,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:06:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:06:57,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:06:57,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:06:57,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:06:57,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:06:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 03:06:57,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:06:57,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:06:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:06:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:06:57,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:06:57,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:06:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:06:57,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712498539] [2020-10-15 03:06:57,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:06:57,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 03:06:57,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570824979] [2020-10-15 03:06:57,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 03:06:57,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:06:57,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 03:06:57,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:06:57,349 INFO L87 Difference]: Start difference. First operand 20747 states and 31009 transitions. Second operand 4 states. [2020-10-15 03:07:07,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:07,517 INFO L93 Difference]: Finished difference Result 59055 states and 87501 transitions. [2020-10-15 03:07:07,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 03:07:07,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-10-15 03:07:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:07,622 INFO L225 Difference]: With dead ends: 59055 [2020-10-15 03:07:07,622 INFO L226 Difference]: Without dead ends: 40205 [2020-10-15 03:07:07,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 03:07:07,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40205 states. [2020-10-15 03:07:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40205 to 40203. [2020-10-15 03:07:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40203 states. [2020-10-15 03:07:10,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40203 states to 40203 states and 59499 transitions. [2020-10-15 03:07:10,101 INFO L78 Accepts]: Start accepts. Automaton has 40203 states and 59499 transitions. Word has length 324 [2020-10-15 03:07:10,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:10,102 INFO L479 AbstractCegarLoop]: Abstraction has 40203 states and 59499 transitions. [2020-10-15 03:07:10,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 03:07:10,102 INFO L276 IsEmpty]: Start isEmpty. Operand 40203 states and 59499 transitions. [2020-10-15 03:07:10,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-15 03:07:10,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:10,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:10,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:07:10,155 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:10,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:10,156 INFO L82 PathProgramCache]: Analyzing trace with hash -642369094, now seen corresponding path program 1 times [2020-10-15 03:07:10,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:10,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306248285] [2020-10-15 03:07:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:12,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:13,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:15,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:15,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-15 03:07:15,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:07:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:07:15,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:15,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:15,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:15,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-15 03:07:15,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:15,748 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:07:15,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:15,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:15,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:15,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 03:07:15,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:15,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:15,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306248285] [2020-10-15 03:07:15,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:15,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:15,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085683857] [2020-10-15 03:07:15,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:15,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:15,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:15,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:15,957 INFO L87 Difference]: Start difference. First operand 40203 states and 59499 transitions. Second operand 5 states. [2020-10-15 03:07:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:28,985 INFO L93 Difference]: Finished difference Result 118869 states and 175653 transitions. [2020-10-15 03:07:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:28,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-15 03:07:28,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:29,166 INFO L225 Difference]: With dead ends: 118869 [2020-10-15 03:07:29,166 INFO L226 Difference]: Without dead ends: 78971 [2020-10-15 03:07:29,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:29,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78971 states. [2020-10-15 03:07:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78971 to 78969. [2020-10-15 03:07:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78969 states. [2020-10-15 03:07:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78969 states to 78969 states and 116025 transitions. [2020-10-15 03:07:35,088 INFO L78 Accepts]: Start accepts. Automaton has 78969 states and 116025 transitions. Word has length 324 [2020-10-15 03:07:35,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:07:35,089 INFO L479 AbstractCegarLoop]: Abstraction has 78969 states and 116025 transitions. [2020-10-15 03:07:35,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:07:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 78969 states and 116025 transitions. [2020-10-15 03:07:35,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-15 03:07:35,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:07:35,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:07:35,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:07:35,178 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:07:35,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:07:35,178 INFO L82 PathProgramCache]: Analyzing trace with hash 875647444, now seen corresponding path program 1 times [2020-10-15 03:07:35,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:07:35,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729976784] [2020-10-15 03:07:35,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:07:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:35,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:35,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:40,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:40,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-15 03:07:40,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:07:40,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-15 03:07:40,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:40,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:07:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:07:40,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 03:07:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:07:40,751 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:07:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:07:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:07:40,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:07:40,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:07:40,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:07:40,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:07:40,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:07:40,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:07:40,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:07:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:07:40,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:07:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:07:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:07:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:07:40,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729976784] [2020-10-15 03:07:40,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:07:40,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:07:40,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764483246] [2020-10-15 03:07:40,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:07:40,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:07:40,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:07:40,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:07:40,909 INFO L87 Difference]: Start difference. First operand 78969 states and 116025 transitions. Second operand 5 states. [2020-10-15 03:07:55,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:07:55,018 INFO L93 Difference]: Finished difference Result 168049 states and 247159 transitions. [2020-10-15 03:07:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:07:55,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-15 03:07:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:07:55,150 INFO L225 Difference]: With dead ends: 168049 [2020-10-15 03:07:55,151 INFO L226 Difference]: Without dead ends: 89671 [2020-10-15 03:07:55,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:07:55,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89671 states. [2020-10-15 03:08:03,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89671 to 79653. [2020-10-15 03:08:03,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79653 states. [2020-10-15 03:08:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79653 states to 79653 states and 117129 transitions. [2020-10-15 03:08:03,869 INFO L78 Accepts]: Start accepts. Automaton has 79653 states and 117129 transitions. Word has length 326 [2020-10-15 03:08:03,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:03,869 INFO L479 AbstractCegarLoop]: Abstraction has 79653 states and 117129 transitions. [2020-10-15 03:08:03,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:03,870 INFO L276 IsEmpty]: Start isEmpty. Operand 79653 states and 117129 transitions. [2020-10-15 03:08:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-15 03:08:03,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:03,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:03,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:08:03,942 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:03,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1579921734, now seen corresponding path program 1 times [2020-10-15 03:08:03,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:03,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339303879] [2020-10-15 03:08:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:04,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:09,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-15 03:08:09,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:08:09,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-15 03:08:09,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:09,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:09,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-15 03:08:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:09,652 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:08:09,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:09,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:09,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:09,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:09,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:09,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:08:09,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:09,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:09,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:09,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:09,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:09,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339303879] [2020-10-15 03:08:09,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:09,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:09,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906995503] [2020-10-15 03:08:09,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:09,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:09,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:09,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:09,831 INFO L87 Difference]: Start difference. First operand 79653 states and 117129 transitions. Second operand 5 states. [2020-10-15 03:08:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:08:31,398 INFO L93 Difference]: Finished difference Result 229863 states and 336264 transitions. [2020-10-15 03:08:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 03:08:31,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-15 03:08:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:08:31,613 INFO L225 Difference]: With dead ends: 229863 [2020-10-15 03:08:31,613 INFO L226 Difference]: Without dead ends: 155173 [2020-10-15 03:08:31,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:08:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155173 states. [2020-10-15 03:08:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155173 to 155171. [2020-10-15 03:08:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155171 states. [2020-10-15 03:08:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155171 states to 155171 states and 226150 transitions. [2020-10-15 03:08:47,458 INFO L78 Accepts]: Start accepts. Automaton has 155171 states and 226150 transitions. Word has length 328 [2020-10-15 03:08:47,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:08:47,458 INFO L479 AbstractCegarLoop]: Abstraction has 155171 states and 226150 transitions. [2020-10-15 03:08:47,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:08:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 155171 states and 226150 transitions. [2020-10-15 03:08:47,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-15 03:08:47,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:08:47,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 03:08:47,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:08:47,624 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:08:47,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:08:47,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1211965740, now seen corresponding path program 1 times [2020-10-15 03:08:47,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:08:47,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854100615] [2020-10-15 03:08:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:08:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:47,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:48,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:48,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:52,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:52,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-15 03:08:52,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:08:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-15 03:08:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:52,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:08:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:08:52,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-15 03:08:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:53,281 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-15 03:08:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:08:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:08:53,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:08:53,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:08:53,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:08:53,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:08:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:08:53,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:08:53,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:08:53,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:08:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:08:53,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:08:53,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:08:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:08:53,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854100615] [2020-10-15 03:08:53,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:08:53,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:08:53,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556723541] [2020-10-15 03:08:53,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:08:53,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:08:53,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:08:53,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:08:53,464 INFO L87 Difference]: Start difference. First operand 155171 states and 226150 transitions. Second operand 5 states.