/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:09:28,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:09:28,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:09:29,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:09:29,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:09:29,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:09:29,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:09:29,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:09:29,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:09:29,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:09:29,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:09:29,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:09:29,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:09:29,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:09:29,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:09:29,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:09:29,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:09:29,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:09:29,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:09:29,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:09:29,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:09:29,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:09:29,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:09:29,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:09:29,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:09:29,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:09:29,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:09:29,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:09:29,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:09:29,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:09:29,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:09:29,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:09:29,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:09:29,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:09:29,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:09:29,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:09:29,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:09:29,039 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:09:29,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:09:29,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:09:29,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:09:29,042 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 [2020-10-13 15:09:29,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:09:29,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:09:29,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:09:29,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:09:29,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:09:29,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:09:29,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:09:29,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:09:29,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:09:29,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:09:29,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:09:29,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:09:29,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:09:29,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:09:29,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:09:29,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:09:29,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:09:29,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:09:29,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:09:29,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:09:29,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:09:29,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:09:29,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:09:29,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:09:29,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:09:29,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:09:29,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:09:29,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:09:29,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:09:29,071 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:09:29,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:09:29,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:09:29,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:09:29,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:09:29,397 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:09:29,397 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-13 15:09:29,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6337dbd54/2a9b10aece2b4cb1be1ebbc3aca1e0c4/FLAG4c32dd191 [2020-10-13 15:09:30,190 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:09:30,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-13 15:09:30,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6337dbd54/2a9b10aece2b4cb1be1ebbc3aca1e0c4/FLAG4c32dd191 [2020-10-13 15:09:30,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6337dbd54/2a9b10aece2b4cb1be1ebbc3aca1e0c4 [2020-10-13 15:09:30,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:09:30,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:09:30,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:09:30,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:09:30,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:09:30,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:09:30" (1/1) ... [2020-10-13 15:09:30,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1225839d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:30, skipping insertion in model container [2020-10-13 15:09:30,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:09:30" (1/1) ... [2020-10-13 15:09:30,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:09:30,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:09:32,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:09:32,392 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:09:33,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:09:34,023 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:09:34,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34 WrapperNode [2020-10-13 15:09:34,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:09:34,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:09:34,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:09:34,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:09:34,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (1/1) ... [2020-10-13 15:09:34,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (1/1) ... [2020-10-13 15:09:34,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (1/1) ... [2020-10-13 15:09:34,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (1/1) ... [2020-10-13 15:09:34,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (1/1) ... [2020-10-13 15:09:34,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (1/1) ... [2020-10-13 15:09:34,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (1/1) ... [2020-10-13 15:09:34,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:09:34,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:09:34,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:09:34,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:09:34,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (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 [2020-10-13 15:09:34,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:09:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:09:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:09:34,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:09:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:09:34,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:09:34,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:09:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:09:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:09:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:09:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:09:34,392 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:09:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:09:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:09:34,393 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:09:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:09:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 15:09:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:09:34,394 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:09:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:09:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:09:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:09:38,756 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:09:38,756 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:09:38,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:09:38 BoogieIcfgContainer [2020-10-13 15:09:38,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:09:38,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:09:38,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:09:38,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:09:38,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:09:30" (1/3) ... [2020-10-13 15:09:38,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9c1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:09:38, skipping insertion in model container [2020-10-13 15:09:38,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:09:34" (2/3) ... [2020-10-13 15:09:38,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c9c1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:09:38, skipping insertion in model container [2020-10-13 15:09:38,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:09:38" (3/3) ... [2020-10-13 15:09:38,786 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-10-13 15:09:38,796 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:09:38,812 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 15:09:38,825 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 15:09:38,854 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:09:38,854 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:09:38,855 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:09:38,855 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:09:38,855 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:09:38,855 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:09:38,855 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:09:38,855 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:09:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1484 states. [2020-10-13 15:09:38,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-13 15:09:38,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:09:38,945 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:09:38,945 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:09:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:09:38,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1064488228, now seen corresponding path program 1 times [2020-10-13 15:09:38,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:09:38,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137061722] [2020-10-13 15:09:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:09:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:42,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:46,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:46,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 490 [2020-10-13 15:09:46,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 15:09:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5171 [2020-10-13 15:09:46,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:46,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:09:46,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:09:46,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-13 15:09:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 15:09:47,553 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-13 15:09:47,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:09:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:09:47,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:09:47,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:09:47,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:09:47,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:09:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 15:09:47,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:09:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:09:47,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:09:47,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:09:47,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:09:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:09:48,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137061722] [2020-10-13 15:09:48,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:09:48,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:09:48,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872985367] [2020-10-13 15:09:48,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:09:48,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:09:48,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:09:48,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:09:48,335 INFO L87 Difference]: Start difference. First operand 1484 states. Second operand 5 states. [2020-10-13 15:10:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:10:07,575 INFO L93 Difference]: Finished difference Result 4330 states and 7816 transitions. [2020-10-13 15:10:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:10:07,578 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 484 [2020-10-13 15:10:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:10:07,615 INFO L225 Difference]: With dead ends: 4330 [2020-10-13 15:10:07,616 INFO L226 Difference]: Without dead ends: 2919 [2020-10-13 15:10:07,632 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 [2020-10-13 15:10:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2919 states. [2020-10-13 15:10:07,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2919 to 2865. [2020-10-13 15:10:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2865 states. [2020-10-13 15:10:07,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 4724 transitions. [2020-10-13 15:10:07,909 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 4724 transitions. Word has length 484 [2020-10-13 15:10:07,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:10:07,914 INFO L479 AbstractCegarLoop]: Abstraction has 2865 states and 4724 transitions. [2020-10-13 15:10:07,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:10:07,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 4724 transitions. [2020-10-13 15:10:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-13 15:10:07,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:07,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:07,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:10:07,940 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:07,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:07,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1721765960, now seen corresponding path program 1 times [2020-10-13 15:10:07,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:07,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381729160] [2020-10-13 15:10:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:08,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:09,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:10,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:10,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:10,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:11,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:11,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:13,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:13,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-13 15:10:13,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 15:10:13,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5107 [2020-10-13 15:10:13,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:10:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:10:13,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-13 15:10:13,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:10:14,532 WARN L193 SmtUtils]: Spent 879.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-13 15:10:14,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:10:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:14,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:14,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:10:14,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:10:14,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 15:10:14,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:10:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:10:14,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:10:14,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:10:14,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381729160] [2020-10-13 15:10:14,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:10:14,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:10:14,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754231821] [2020-10-13 15:10:14,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:10:14,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:10:14,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:10:14,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:10:14,987 INFO L87 Difference]: Start difference. First operand 2865 states and 4724 transitions. Second operand 5 states. [2020-10-13 15:10:30,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:10:30,593 INFO L93 Difference]: Finished difference Result 8502 states and 14017 transitions. [2020-10-13 15:10:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:10:30,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 486 [2020-10-13 15:10:30,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:10:30,623 INFO L225 Difference]: With dead ends: 8502 [2020-10-13 15:10:30,624 INFO L226 Difference]: Without dead ends: 5655 [2020-10-13 15:10:30,631 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 [2020-10-13 15:10:30,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2020-10-13 15:10:30,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 5612. [2020-10-13 15:10:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5612 states. [2020-10-13 15:10:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 9218 transitions. [2020-10-13 15:10:30,905 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 9218 transitions. Word has length 486 [2020-10-13 15:10:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:10:30,906 INFO L479 AbstractCegarLoop]: Abstraction has 5612 states and 9218 transitions. [2020-10-13 15:10:30,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:10:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 9218 transitions. [2020-10-13 15:10:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-13 15:10:30,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:30,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:30,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:10:30,928 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:30,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:30,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1313216099, now seen corresponding path program 1 times [2020-10-13 15:10:30,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:30,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258315403] [2020-10-13 15:10:30,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:31,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:31,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:32,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:32,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:33,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:33,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:33,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:34,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:34,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:34,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:35,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:35,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:35,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:36,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:36,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:36,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 496 [2020-10-13 15:10:36,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:10:36,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-13 15:10:36,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:36,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:10:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:10:36,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-13 15:10:36,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:10:37,372 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-13 15:10:37,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:10:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:37,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:37,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:37,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:10:37,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:10:37,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:10:37,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:10:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:10:37,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:10:37,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:10:37,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258315403] [2020-10-13 15:10:37,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:10:37,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:10:37,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608885799] [2020-10-13 15:10:37,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:10:37,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:10:37,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:10:37,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:10:37,681 INFO L87 Difference]: Start difference. First operand 5612 states and 9218 transitions. Second operand 5 states. [2020-10-13 15:10:52,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:10:52,775 INFO L93 Difference]: Finished difference Result 16660 states and 27356 transitions. [2020-10-13 15:10:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:10:52,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 490 [2020-10-13 15:10:52,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:10:52,821 INFO L225 Difference]: With dead ends: 16660 [2020-10-13 15:10:52,821 INFO L226 Difference]: Without dead ends: 11083 [2020-10-13 15:10:52,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:10:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11083 states. [2020-10-13 15:10:53,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11083 to 11051. [2020-10-13 15:10:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11051 states. [2020-10-13 15:10:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11051 states to 11051 states and 18074 transitions. [2020-10-13 15:10:53,351 INFO L78 Accepts]: Start accepts. Automaton has 11051 states and 18074 transitions. Word has length 490 [2020-10-13 15:10:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:10:53,352 INFO L479 AbstractCegarLoop]: Abstraction has 11051 states and 18074 transitions. [2020-10-13 15:10:53,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:10:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 11051 states and 18074 transitions. [2020-10-13 15:10:53,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-13 15:10:53,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:10:53,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:10:53,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:10:53,388 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:10:53,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:10:53,388 INFO L82 PathProgramCache]: Analyzing trace with hash -884254619, now seen corresponding path program 1 times [2020-10-13 15:10:53,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:10:53,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617198457] [2020-10-13 15:10:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:10:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:53,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:55,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:55,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:55,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:55,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:58,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:58,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-13 15:10:58,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 15:10:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-13 15:10:58,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:10:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 15:10:58,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 15:10:58,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:59,559 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-13 15:10:59,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:10:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:10:59,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:10:59,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:10:59,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:10:59,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:10:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 15:10:59,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:10:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:10:59,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:10:59,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:10:59,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:10:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:10:59,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617198457] [2020-10-13 15:10:59,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:10:59,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:10:59,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43397762] [2020-10-13 15:10:59,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:10:59,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:10:59,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:10:59,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:10:59,820 INFO L87 Difference]: Start difference. First operand 11051 states and 18074 transitions. Second operand 4 states. [2020-10-13 15:11:20,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:20,325 INFO L93 Difference]: Finished difference Result 33014 states and 53986 transitions. [2020-10-13 15:11:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:11:20,327 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 493 [2020-10-13 15:11:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:20,489 INFO L225 Difference]: With dead ends: 33014 [2020-10-13 15:11:20,489 INFO L226 Difference]: Without dead ends: 22029 [2020-10-13 15:11:20,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:11:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22029 states. [2020-10-13 15:11:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22029 to 11114. [2020-10-13 15:11:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11114 states. [2020-10-13 15:11:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11114 states to 11114 states and 18159 transitions. [2020-10-13 15:11:21,114 INFO L78 Accepts]: Start accepts. Automaton has 11114 states and 18159 transitions. Word has length 493 [2020-10-13 15:11:21,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:21,114 INFO L479 AbstractCegarLoop]: Abstraction has 11114 states and 18159 transitions. [2020-10-13 15:11:21,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:11:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 11114 states and 18159 transitions. [2020-10-13 15:11:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2020-10-13 15:11:21,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:21,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:21,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:11:21,142 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2025404466, now seen corresponding path program 1 times [2020-10-13 15:11:21,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:21,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764184195] [2020-10-13 15:11:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:21,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:21,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:23,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:23,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:23,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:25,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:26,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:26,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-13 15:11:26,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 15:11:26,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5110 [2020-10-13 15:11:26,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:11:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-13 15:11:26,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 15:11:26,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:27,445 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-13 15:11:27,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:27,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:27,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:27,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:27,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:11:27,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:27,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:27,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764184195] [2020-10-13 15:11:27,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:27,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:11:27,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890623942] [2020-10-13 15:11:27,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:11:27,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:27,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:11:27,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:11:27,636 INFO L87 Difference]: Start difference. First operand 11114 states and 18159 transitions. Second operand 4 states. [2020-10-13 15:11:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:11:41,539 INFO L93 Difference]: Finished difference Result 21586 states and 34812 transitions. [2020-10-13 15:11:41,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:11:41,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2020-10-13 15:11:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:11:41,577 INFO L225 Difference]: With dead ends: 21586 [2020-10-13 15:11:41,577 INFO L226 Difference]: Without dead ends: 14870 [2020-10-13 15:11:41,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:11:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14870 states. [2020-10-13 15:11:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14870 to 12668. [2020-10-13 15:11:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12668 states. [2020-10-13 15:11:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12668 states to 12668 states and 20745 transitions. [2020-10-13 15:11:42,170 INFO L78 Accepts]: Start accepts. Automaton has 12668 states and 20745 transitions. Word has length 494 [2020-10-13 15:11:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:11:42,170 INFO L479 AbstractCegarLoop]: Abstraction has 12668 states and 20745 transitions. [2020-10-13 15:11:42,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:11:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 12668 states and 20745 transitions. [2020-10-13 15:11:42,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-13 15:11:42,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:11:42,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:11:42,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:11:42,193 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:11:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:11:42,193 INFO L82 PathProgramCache]: Analyzing trace with hash 972117723, now seen corresponding path program 1 times [2020-10-13 15:11:42,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:11:42,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252246434] [2020-10-13 15:11:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:11:42,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:42,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:42,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:43,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:43,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:44,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:45,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:45,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:45,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:45,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:46,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:46,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:47,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:47,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:47,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-13 15:11:47,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 15:11:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-13 15:11:47,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:11:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 15:11:47,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 15:11:47,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:48,440 WARN L193 SmtUtils]: Spent 895.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-13 15:11:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:11:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:11:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:11:48,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:11:48,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:11:48,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:11:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 15:11:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:11:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:11:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:11:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:11:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:11:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:11:48,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252246434] [2020-10-13 15:11:48,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:11:48,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:11:48,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771551575] [2020-10-13 15:11:48,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:11:48,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:11:48,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:11:48,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:11:48,647 INFO L87 Difference]: Start difference. First operand 12668 states and 20745 transitions. Second operand 5 states. [2020-10-13 15:12:10,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:10,496 INFO L93 Difference]: Finished difference Result 36552 states and 59659 transitions. [2020-10-13 15:12:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:12:10,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 496 [2020-10-13 15:12:10,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:10,546 INFO L225 Difference]: With dead ends: 36552 [2020-10-13 15:12:10,547 INFO L226 Difference]: Without dead ends: 25147 [2020-10-13 15:12:10,569 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 [2020-10-13 15:12:10,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25147 states. [2020-10-13 15:12:11,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25147 to 13958. [2020-10-13 15:12:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13958 states. [2020-10-13 15:12:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13958 states to 13958 states and 23085 transitions. [2020-10-13 15:12:11,310 INFO L78 Accepts]: Start accepts. Automaton has 13958 states and 23085 transitions. Word has length 496 [2020-10-13 15:12:11,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:11,310 INFO L479 AbstractCegarLoop]: Abstraction has 13958 states and 23085 transitions. [2020-10-13 15:12:11,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 13958 states and 23085 transitions. [2020-10-13 15:12:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-13 15:12:11,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:11,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:11,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:12:11,327 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:11,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1412904318, now seen corresponding path program 1 times [2020-10-13 15:12:11,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:11,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593795920] [2020-10-13 15:12:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:11,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:12,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:13,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:14,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:15,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:16,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:16,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-13 15:12:16,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 15:12:16,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-13 15:12:16,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:16,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:12:16,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:12:16,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-13 15:12:16,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:17,624 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-13 15:12:17,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:17,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:17,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:17,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:17,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:12:17,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:17,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:17,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:17,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:17,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593795920] [2020-10-13 15:12:17,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:17,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:12:17,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529463091] [2020-10-13 15:12:17,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:12:17,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:17,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:12:17,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:17,909 INFO L87 Difference]: Start difference. First operand 13958 states and 23085 transitions. Second operand 5 states. [2020-10-13 15:12:37,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:12:37,301 INFO L93 Difference]: Finished difference Result 40887 states and 67597 transitions. [2020-10-13 15:12:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:12:37,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 496 [2020-10-13 15:12:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:12:37,342 INFO L225 Difference]: With dead ends: 40887 [2020-10-13 15:12:37,342 INFO L226 Difference]: Without dead ends: 27070 [2020-10-13 15:12:37,369 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 [2020-10-13 15:12:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27070 states. [2020-10-13 15:12:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27070 to 27049. [2020-10-13 15:12:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27049 states. [2020-10-13 15:12:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27049 states to 27049 states and 44501 transitions. [2020-10-13 15:12:38,622 INFO L78 Accepts]: Start accepts. Automaton has 27049 states and 44501 transitions. Word has length 496 [2020-10-13 15:12:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:12:38,623 INFO L479 AbstractCegarLoop]: Abstraction has 27049 states and 44501 transitions. [2020-10-13 15:12:38,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:12:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 27049 states and 44501 transitions. [2020-10-13 15:12:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2020-10-13 15:12:38,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:12:38,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:12:38,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:12:38,651 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:12:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:12:38,652 INFO L82 PathProgramCache]: Analyzing trace with hash -614996934, now seen corresponding path program 1 times [2020-10-13 15:12:38,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:12:38,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766386510] [2020-10-13 15:12:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:12:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:39,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:40,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:40,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:41,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:42,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:42,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:42,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:42,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:43,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:43,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:43,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:43,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:43,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-13 15:12:43,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 15:12:43,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-13 15:12:43,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:12:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 15:12:43,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 15:12:43,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:44,906 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-13 15:12:44,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:12:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:12:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:12:44,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:12:44,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:12:44,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:12:44,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 15:12:44,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:12:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:12:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:12:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:12:44,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:12:45,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:12:45,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766386510] [2020-10-13 15:12:45,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:12:45,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:12:45,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746170154] [2020-10-13 15:12:45,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:12:45,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:12:45,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:12:45,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:12:45,136 INFO L87 Difference]: Start difference. First operand 27049 states and 44501 transitions. Second operand 5 states. [2020-10-13 15:13:17,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:13:17,914 INFO L93 Difference]: Finished difference Result 95866 states and 156188 transitions. [2020-10-13 15:13:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:13:17,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 498 [2020-10-13 15:13:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted.