/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:00:10,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:00:10,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:00:10,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:00:10,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:00:10,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:00:10,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:00:10,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:00:10,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:00:10,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:00:10,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:00:10,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:00:10,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:00:10,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:00:10,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:00:10,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:00:10,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:00:10,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:00:10,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:00:10,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:00:10,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:00:10,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:00:10,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:00:10,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:00:10,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:00:10,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:00:10,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:00:10,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:00:10,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:00:10,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:00:10,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:00:10,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:00:10,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:00:10,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:00:10,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:00:10,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:00:10,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:00:10,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:00:10,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:00:10,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:00:10,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:00:10,975 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 [2020-09-25 08:00:11,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:00:11,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:00:11,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:00:11,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:00:11,022 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:00:11,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:00:11,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:00:11,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:00:11,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:00:11,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:00:11,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:00:11,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:00:11,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:00:11,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:00:11,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:00:11,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:00:11,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:00:11,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:00:11,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:00:11,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:00:11,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:00:11,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:00:11,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:00:11,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:00:11,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:00:11,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:00:11,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:00:11,029 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:00:11,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:00:11,029 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:00:11,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:00:11,563 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:00:11,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:00:11,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:00:11,569 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:00:11,570 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 08:00:11,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aef8b1586/3ee439369d234b278bb90dade092253c/FLAG9f06657bd [2020-09-25 08:00:12,211 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:00:12,212 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-09-25 08:00:12,221 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aef8b1586/3ee439369d234b278bb90dade092253c/FLAG9f06657bd [2020-09-25 08:00:12,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aef8b1586/3ee439369d234b278bb90dade092253c [2020-09-25 08:00:12,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:00:12,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:00:12,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:00:12,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:00:12,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:00:12,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:12,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a32a894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12, skipping insertion in model container [2020-09-25 08:00:12,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:12,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:00:12,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:00:12,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:00:12,882 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:00:12,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:00:12,923 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:00:12,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12 WrapperNode [2020-09-25 08:00:12,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:00:12,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:00:12,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:00:12,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:00:13,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:13,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:13,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:13,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:13,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:13,060 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:13,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (1/1) ... [2020-09-25 08:00:13,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:00:13,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:00:13,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:00:13,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:00:13,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (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 [2020-09-25 08:00:13,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:00:13,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:00:13,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:00:13,142 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 08:00:13,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:00:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:00:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:00:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:00:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 08:00:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:00:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:00:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:00:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:00:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:00:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:00:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:00:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:00:13,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:00:13,424 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 08:00:13,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:00:13 BoogieIcfgContainer [2020-09-25 08:00:13,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:00:13,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:00:13,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:00:13,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:00:13,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:00:12" (1/3) ... [2020-09-25 08:00:13,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fed1518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:00:13, skipping insertion in model container [2020-09-25 08:00:13,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:00:12" (2/3) ... [2020-09-25 08:00:13,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fed1518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:00:13, skipping insertion in model container [2020-09-25 08:00:13,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:00:13" (3/3) ... [2020-09-25 08:00:13,440 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-09-25 08:00:13,454 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:00:13,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:00:13,495 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:00:13,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:00:13,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:00:13,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:00:13,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:00:13,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:00:13,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:00:13,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:00:13,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:00:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-09-25 08:00:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 08:00:13,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:13,576 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] [2020-09-25 08:00:13,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:13,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-09-25 08:00:13,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:13,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305435912] [2020-09-25 08:00:13,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:13,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:14,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:14,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 08:00:14,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:14,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 08:00:14,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:14,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 08:00:14,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:14,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 08:00:14,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:14,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:14,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:14,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:14,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:14,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:00:14,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:14,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:14,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:14,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:14,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:14,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:14,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:14,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:14,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:14,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:00:14,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:14,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:00:14,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:14,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:14,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:00:14,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:14,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:00:14,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305435912] [2020-09-25 08:00:14,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:00:14,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:00:14,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766877106] [2020-09-25 08:00:14,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:00:14,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:14,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:00:14,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:00:14,264 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-09-25 08:00:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:14,450 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-09-25 08:00:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:00:14,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-25 08:00:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:14,466 INFO L225 Difference]: With dead ends: 94 [2020-09-25 08:00:14,466 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 08:00:14,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:00:14,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 08:00:14,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-09-25 08:00:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 08:00:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-09-25 08:00:14,526 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 29 [2020-09-25 08:00:14,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:14,526 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-09-25 08:00:14,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:00:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-09-25 08:00:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 08:00:14,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:14,529 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] [2020-09-25 08:00:14,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:00:14,530 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:14,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:14,530 INFO L82 PathProgramCache]: Analyzing trace with hash 31734745, now seen corresponding path program 1 times [2020-09-25 08:00:14,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:14,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322918881] [2020-09-25 08:00:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:14,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:14,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:14,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 08:00:14,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-25 08:00:14,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:14,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:00:14,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:00:14,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:00:14,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:14,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:14,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:14,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:14,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:00:14,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:14,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:14,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:14,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:14,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:14,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:14,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:14,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:14,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:00:14,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 08:00:14,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:14,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:14,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:14,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:00:15,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322918881] [2020-09-25 08:00:15,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:00:15,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:00:15,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732422018] [2020-09-25 08:00:15,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:00:15,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:15,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:00:15,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:00:15,011 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2020-09-25 08:00:15,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:15,236 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-09-25 08:00:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:00:15,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-25 08:00:15,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:15,240 INFO L225 Difference]: With dead ends: 83 [2020-09-25 08:00:15,240 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 08:00:15,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:00:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 08:00:15,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 50. [2020-09-25 08:00:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:00:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-25 08:00:15,258 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-09-25 08:00:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:15,258 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-25 08:00:15,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:00:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-25 08:00:15,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 08:00:15,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:15,260 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] [2020-09-25 08:00:15,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:00:15,261 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:15,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:15,261 INFO L82 PathProgramCache]: Analyzing trace with hash 215899159, now seen corresponding path program 1 times [2020-09-25 08:00:15,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:15,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553503272] [2020-09-25 08:00:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:16,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:16,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 08:00:16,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:00:16,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-09-25 08:00:16,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:16,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:00:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:00:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:00:16,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:16,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:16,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:16,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:16,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:00:16,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:16,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:16,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:16,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:16,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:16,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:00:16,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 08:00:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:16,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:16,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:00:16,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553503272] [2020-09-25 08:00:16,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:00:16,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:00:16,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45572785] [2020-09-25 08:00:16,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:00:16,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:16,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:00:16,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:00:16,968 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-09-25 08:00:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:17,223 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2020-09-25 08:00:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:00:17,224 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 08:00:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:17,226 INFO L225 Difference]: With dead ends: 92 [2020-09-25 08:00:17,226 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 08:00:17,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:00:17,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 08:00:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-09-25 08:00:17,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 08:00:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-09-25 08:00:17,241 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 36 [2020-09-25 08:00:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:17,242 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-09-25 08:00:17,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:00:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-09-25 08:00:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 08:00:17,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:17,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:17,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:00:17,244 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:17,245 INFO L82 PathProgramCache]: Analyzing trace with hash -490137063, now seen corresponding path program 2 times [2020-09-25 08:00:17,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:17,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [862925006] [2020-09-25 08:00:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:17,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:17,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:19,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:19,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:00:19,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:00:19,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2609 [2020-09-25 08:00:19,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:19,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:19,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:00:19,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 08:00:19,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:00:19,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:19,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:19,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:19,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:00:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:19,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:19,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:19,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:19,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:00:19,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:00:19,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:19,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:19,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:19,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:00:20,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [862925006] [2020-09-25 08:00:20,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:00:20,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:00:20,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684602237] [2020-09-25 08:00:20,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:00:20,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:20,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:00:20,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:00:20,004 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 9 states. [2020-09-25 08:00:20,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:20,244 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2020-09-25 08:00:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:00:20,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-09-25 08:00:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:20,246 INFO L225 Difference]: With dead ends: 101 [2020-09-25 08:00:20,246 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 08:00:20,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:00:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 08:00:20,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 68. [2020-09-25 08:00:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 08:00:20,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-09-25 08:00:20,258 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 43 [2020-09-25 08:00:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:20,258 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-09-25 08:00:20,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:00:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-09-25 08:00:20,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 08:00:20,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:20,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:20,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:00:20,261 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:20,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:20,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1622078935, now seen corresponding path program 3 times [2020-09-25 08:00:20,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:20,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481929136] [2020-09-25 08:00:20,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:20,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:20,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:20,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:23,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:23,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:00:23,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:00:23,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3333 [2020-09-25 08:00:23,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:23,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:00:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:00:23,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:00:23,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:23,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:23,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:23,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:23,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:00:23,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:23,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:23,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:23,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:23,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:00:23,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:23,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:23,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:00:23,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:23,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:00:23,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:23,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:00:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 08:00:23,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:00:23,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:00:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-25 08:00:23,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481929136] [2020-09-25 08:00:23,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:00:23,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:00:23,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652491084] [2020-09-25 08:00:23,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:00:23,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:23,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:00:23,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:00:23,727 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 7 states. [2020-09-25 08:00:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:23,966 INFO L93 Difference]: Finished difference Result 119 states and 131 transitions. [2020-09-25 08:00:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:00:23,967 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-25 08:00:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:23,968 INFO L225 Difference]: With dead ends: 119 [2020-09-25 08:00:23,968 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 08:00:23,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:00:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 08:00:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-09-25 08:00:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-25 08:00:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-09-25 08:00:23,977 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 50 [2020-09-25 08:00:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:23,978 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-09-25 08:00:23,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:00:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-09-25 08:00:23,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 08:00:23,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:23,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:23,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:00:23,980 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:23,981 INFO L82 PathProgramCache]: Analyzing trace with hash -895858853, now seen corresponding path program 1 times [2020-09-25 08:00:23,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:23,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536242222] [2020-09-25 08:00:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:24,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:24,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:28,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:28,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 08:00:28,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:00:28,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:00:28,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:28,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:00:29,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 08:00:29,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:00:29,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:29,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:29,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:29,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:29,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:00:29,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:29,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:29,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:29,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:29,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:00:29,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 08:00:29,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:29,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:00:29,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536242222] [2020-09-25 08:00:29,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:00:29,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:00:29,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273450129] [2020-09-25 08:00:29,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:00:29,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:29,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:00:29,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:00:29,286 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 11 states. [2020-09-25 08:00:29,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:29,639 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2020-09-25 08:00:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:00:29,639 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-09-25 08:00:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:29,643 INFO L225 Difference]: With dead ends: 108 [2020-09-25 08:00:29,643 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 08:00:29,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:00:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 08:00:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 78. [2020-09-25 08:00:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 08:00:29,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-09-25 08:00:29,657 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 56 [2020-09-25 08:00:29,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:29,661 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-09-25 08:00:29,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:00:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-09-25 08:00:29,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 08:00:29,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:29,662 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:29,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:00:29,664 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:29,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:29,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1733379499, now seen corresponding path program 2 times [2020-09-25 08:00:29,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:29,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683124629] [2020-09-25 08:00:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:29,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:29,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:29,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:31,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:34,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:34,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:34,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 08:00:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:00:34,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:00:34,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:34,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:00:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 08:00:34,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:00:34,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:34,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:34,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:34,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:34,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:34,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:00:34,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:34,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:34,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:34,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:34,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:34,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:34,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:34,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:00:34,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 08:00:34,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:34,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:34,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:00:34,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683124629] [2020-09-25 08:00:34,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:00:34,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 08:00:34,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519091206] [2020-09-25 08:00:34,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:00:34,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:34,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:00:34,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:00:34,894 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 13 states. [2020-09-25 08:00:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:35,179 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2020-09-25 08:00:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 08:00:35,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-09-25 08:00:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:35,181 INFO L225 Difference]: With dead ends: 117 [2020-09-25 08:00:35,182 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 08:00:35,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:00:35,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 08:00:35,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2020-09-25 08:00:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 08:00:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-25 08:00:35,203 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 63 [2020-09-25 08:00:35,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:35,204 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-25 08:00:35,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:00:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-25 08:00:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 08:00:35,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:35,205 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:35,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:00:35,209 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:35,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:35,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1140578843, now seen corresponding path program 3 times [2020-09-25 08:00:35,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:35,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930034556] [2020-09-25 08:00:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:35,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:35,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:35,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:36,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:36,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:38,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:40,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:40,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:00:40,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:00:40,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:00:40,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:40,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:00:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:00:40,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 08:00:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:40,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:40,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:40,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:40,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:40,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:00:40,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:40,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:40,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:40,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:00:40,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:40,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:40,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:40,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:00:40,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:40,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 08:00:40,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:40,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:00:40,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:40,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:00:40,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:00:40,690 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-25 08:00:40,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930034556] [2020-09-25 08:00:40,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:00:40,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:00:40,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029398631] [2020-09-25 08:00:40,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:00:40,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:40,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:00:40,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:00:40,693 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 11 states. [2020-09-25 08:00:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:40,998 INFO L93 Difference]: Finished difference Result 215 states and 240 transitions. [2020-09-25 08:00:40,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 08:00:40,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-09-25 08:00:40,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:41,000 INFO L225 Difference]: With dead ends: 215 [2020-09-25 08:00:41,000 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 08:00:41,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:00:41,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 08:00:41,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 99. [2020-09-25 08:00:41,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-09-25 08:00:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-09-25 08:00:41,009 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 70 [2020-09-25 08:00:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:41,009 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-09-25 08:00:41,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:00:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-09-25 08:00:41,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 08:00:41,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:41,011 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:41,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:00:41,011 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:41,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1316817139, now seen corresponding path program 1 times [2020-09-25 08:00:41,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:41,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346598477] [2020-09-25 08:00:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:41,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:42,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:43,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:46,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:46,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 08:00:46,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:00:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:00:46,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:46,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:00:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 08:00:46,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:00:46,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:46,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:46,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:46,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:46,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:46,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:46,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:00:46,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:46,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:46,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:46,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:46,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:46,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:46,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:46,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:46,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 08:00:46,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:46,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 08:00:46,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:46,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:46,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-09-25 08:00:46,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346598477] [2020-09-25 08:00:46,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:00:46,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:00:46,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991682353] [2020-09-25 08:00:46,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:00:46,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:46,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:00:46,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:00:46,185 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 5 states. [2020-09-25 08:00:46,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:46,335 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2020-09-25 08:00:46,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:00:46,339 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-09-25 08:00:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:46,340 INFO L225 Difference]: With dead ends: 159 [2020-09-25 08:00:46,341 INFO L226 Difference]: Without dead ends: 83 [2020-09-25 08:00:46,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:00:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-25 08:00:46,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-25 08:00:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 08:00:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2020-09-25 08:00:46,358 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 71 [2020-09-25 08:00:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:46,358 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2020-09-25 08:00:46,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:00:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2020-09-25 08:00:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 08:00:46,364 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:46,364 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:46,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:00:46,365 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:46,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1861435807, now seen corresponding path program 4 times [2020-09-25 08:00:46,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:46,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954898093] [2020-09-25 08:00:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:46,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:46,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:46,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:51,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:51,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 08:00:51,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:00:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 08:00:51,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:51,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:51,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:00:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:00:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:00:51,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:51,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:51,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:51,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:51,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:51,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:00:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:51,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:51,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:51,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:00:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 08:00:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:51,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 08:00:51,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954898093] [2020-09-25 08:00:51,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:00:51,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:00:51,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595189955] [2020-09-25 08:00:51,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:00:51,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:51,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:00:51,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:00:51,673 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand 15 states. [2020-09-25 08:00:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:52,197 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2020-09-25 08:00:52,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:00:52,198 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 76 [2020-09-25 08:00:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:52,199 INFO L225 Difference]: With dead ends: 117 [2020-09-25 08:00:52,199 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 08:00:52,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-09-25 08:00:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 08:00:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2020-09-25 08:00:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 08:00:52,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2020-09-25 08:00:52,211 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 76 [2020-09-25 08:00:52,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:52,211 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2020-09-25 08:00:52,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:00:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2020-09-25 08:00:52,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 08:00:52,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:52,212 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:52,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:00:52,216 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:52,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1593338769, now seen corresponding path program 5 times [2020-09-25 08:00:52,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:52,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912266367] [2020-09-25 08:00:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:52,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:52,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:52,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:57,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:57,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 08:00:57,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 08:00:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 08:00:57,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:57,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:00:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:00:57,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 08:00:57,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:00:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:00:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:57,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:57,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:57,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:00:57,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:00:57,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:00:57,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:57,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:57,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:57,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:00:57,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:00:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:57,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:57,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:00:57,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:00:57,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:00:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 08:00:57,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:00:57,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:00:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:00:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:00:57,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:00:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:00:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 08:00:57,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912266367] [2020-09-25 08:00:57,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:00:57,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 08:00:57,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804829526] [2020-09-25 08:00:57,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 08:00:57,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:00:57,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 08:00:57,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:00:57,550 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand 17 states. [2020-09-25 08:00:58,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:00:58,103 INFO L93 Difference]: Finished difference Result 124 states and 131 transitions. [2020-09-25 08:00:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 08:00:58,104 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 83 [2020-09-25 08:00:58,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:00:58,105 INFO L225 Difference]: With dead ends: 124 [2020-09-25 08:00:58,105 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 08:00:58,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-09-25 08:00:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 08:00:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 97. [2020-09-25 08:00:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-25 08:00:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2020-09-25 08:00:58,112 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 83 [2020-09-25 08:00:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:00:58,113 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2020-09-25 08:00:58,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 08:00:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2020-09-25 08:00:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 08:00:58,114 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:00:58,114 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:00:58,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:00:58,115 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:00:58,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:00:58,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1839231649, now seen corresponding path program 6 times [2020-09-25 08:00:58,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:00:58,116 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31073637] [2020-09-25 08:00:58,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:00:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:00:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:58,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:00:59,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking...