/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:20:37,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:20:37,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:20:37,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:20:37,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:20:37,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:20:37,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:20:37,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:20:37,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:20:37,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:20:37,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:20:37,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:20:37,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:20:37,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:20:37,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:20:37,908 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:20:37,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:20:37,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:20:37,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:20:37,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:20:37,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:20:37,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:20:37,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:20:37,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:20:37,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:20:37,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:20:37,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:20:37,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:20:37,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:20:37,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-25 03:20:37,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:20:37,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:20:37,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:20:37,956 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 03:20:38,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:20:38,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:20:38,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:20:38,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:20:38,008 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:20:38,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:20:38,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:20:38,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:20:38,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:20:38,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:20:38,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:20:38,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:20:38,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:20:38,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:20:38,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:20:38,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:20:38,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:20:38,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:20:38,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:20:38,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:20:38,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:20:38,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:20:38,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:20:38,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:20:38,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:20:38,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:20:38,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:20:38,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:20:38,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:20:38,016 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:20:38,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:20:38,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:20:38,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:20:38,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:20:38,546 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:20:38,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 03:20:38,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62cb060f4/0fb3ca52883e4117b60726d91bead869/FLAG61ac1c90d [2020-09-25 03:20:39,269 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:20:39,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label54.c [2020-09-25 03:20:39,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62cb060f4/0fb3ca52883e4117b60726d91bead869/FLAG61ac1c90d [2020-09-25 03:20:39,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62cb060f4/0fb3ca52883e4117b60726d91bead869 [2020-09-25 03:20:39,507 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:20:39,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:20:39,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:20:39,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:20:39,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:20:39,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:20:39" (1/1) ... [2020-09-25 03:20:39,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:39, skipping insertion in model container [2020-09-25 03:20:39,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:20:39" (1/1) ... [2020-09-25 03:20:39,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:20:39,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:20:40,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:20:40,115 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:20:40,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:20:40,379 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:20:40,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40 WrapperNode [2020-09-25 03:20:40,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:20:40,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:20:40,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:20:40,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:20:40,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (1/1) ... [2020-09-25 03:20:40,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (1/1) ... [2020-09-25 03:20:40,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (1/1) ... [2020-09-25 03:20:40,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (1/1) ... [2020-09-25 03:20:40,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (1/1) ... [2020-09-25 03:20:40,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (1/1) ... [2020-09-25 03:20:40,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (1/1) ... [2020-09-25 03:20:40,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:20:40,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:20:40,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:20:40,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:20:40,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (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 03:20:40,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:20:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:20:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 03:20:40,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:20:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 03:20:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:20:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:20:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:20:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:20:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:20:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:20:41,968 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:20:41,968 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:20:41,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:20:41 BoogieIcfgContainer [2020-09-25 03:20:41,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:20:41,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:20:41,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:20:41,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:20:41,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:20:39" (1/3) ... [2020-09-25 03:20:41,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:20:41, skipping insertion in model container [2020-09-25 03:20:41,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:20:40" (2/3) ... [2020-09-25 03:20:41,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:20:41, skipping insertion in model container [2020-09-25 03:20:41,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:20:41" (3/3) ... [2020-09-25 03:20:41,988 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label54.c [2020-09-25 03:20:41,999 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:20:42,011 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:20:42,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:20:42,070 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:20:42,070 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:20:42,070 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:20:42,071 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:20:42,071 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:20:42,071 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:20:42,071 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:20:42,071 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:20:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 03:20:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 03:20:42,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:20:42,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:20:42,126 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:20:42,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:20:42,134 INFO L82 PathProgramCache]: Analyzing trace with hash 79338610, now seen corresponding path program 1 times [2020-09-25 03:20:42,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:20:42,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 03:20:42,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:20:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:20:42,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:43,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:45,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:47,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:20:47,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 03:20:47,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:20:47,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 03:20:47,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:20:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:20:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:20:47,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 03:20:47,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:20:47,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:20:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:20:47,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:47,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:20:47,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:20:47,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:20:47,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 03:20:47,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:20:47,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:20:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:20:47,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:20:47,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:20:47,736 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 03:20:47,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 03:20:47,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:20:47,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 03:20:47,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101781381] [2020-09-25 03:20:47,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 03:20:47,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:20:47,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 03:20:47,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 03:20:47,769 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 03:20:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:20:50,159 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 03:20:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 03:20:50,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 03:20:50,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:20:50,193 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 03:20:50,193 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 03:20:50,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:20:50,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 03:20:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 03:20:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 03:20:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 03:20:50,322 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 127 [2020-09-25 03:20:50,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:20:50,323 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 03:20:50,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 03:20:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 03:20:50,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 03:20:50,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:20:50,332 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:50,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:20:50,332 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:20:50,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:20:50,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1605843042, now seen corresponding path program 1 times [2020-09-25 03:20:50,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:20:50,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414569618] [2020-09-25 03:20:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:20:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:20:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:50,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:50,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:51,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:52,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:52,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:55,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:20:55,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 03:20:55,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:20:55,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 03:20:55,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:20:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:20:55,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 03:20:55,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 03:20:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:20:55,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:20:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:20:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:55,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:20:55,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:20:55,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:20:55,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:20:55,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:20:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:20:55,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:20:55,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:20:55,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:20:55,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:20:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:20:55,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:55,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:55,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:20:55,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:20:55,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:20:55,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 03:20:55,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:20:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:20:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:20:55,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 03:20:55,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:20:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:20:55,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414569618] [2020-09-25 03:20:55,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:20:55,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:20:55,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795531256] [2020-09-25 03:20:55,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:20:55,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:20:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:20:55,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:20:55,677 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 6 states. [2020-09-25 03:20:57,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:20:57,711 INFO L93 Difference]: Finished difference Result 1761 states and 2227 transitions. [2020-09-25 03:20:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:20:57,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-09-25 03:20:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:20:57,723 INFO L225 Difference]: With dead ends: 1761 [2020-09-25 03:20:57,724 INFO L226 Difference]: Without dead ends: 1050 [2020-09-25 03:20:57,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:20:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-25 03:20:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1038. [2020-09-25 03:20:57,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-25 03:20:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1286 transitions. [2020-09-25 03:20:57,773 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1286 transitions. Word has length 145 [2020-09-25 03:20:57,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:20:57,774 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1286 transitions. [2020-09-25 03:20:57,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:20:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1286 transitions. [2020-09-25 03:20:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 03:20:57,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:20:57,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:57,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:20:57,779 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:20:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:20:57,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1464054185, now seen corresponding path program 1 times [2020-09-25 03:20:57,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:20:57,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830222118] [2020-09-25 03:20:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:20:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:20:57,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:59,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:20:59,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:02,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:02,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 03:21:02,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:21:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4208 [2020-09-25 03:21:02,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:21:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:21:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 03:21:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:21:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:02,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:02,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:02,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:21:02,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:02,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 03:21:02,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:21:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:02,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:21:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:21:02,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:21:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:02,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:02,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 03:21:02,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:21:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 03:21:02,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:02,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:21:02,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:02,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 03:21:02,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:21:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:21:02,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830222118] [2020-09-25 03:21:02,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:21:02,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:21:02,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954161042] [2020-09-25 03:21:02,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:21:02,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:21:02,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:21:02,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:21:02,879 INFO L87 Difference]: Start difference. First operand 1038 states and 1286 transitions. Second operand 11 states. [2020-09-25 03:21:06,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:21:06,534 INFO L93 Difference]: Finished difference Result 3227 states and 4276 transitions. [2020-09-25 03:21:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:21:06,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 161 [2020-09-25 03:21:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:21:06,550 INFO L225 Difference]: With dead ends: 3227 [2020-09-25 03:21:06,551 INFO L226 Difference]: Without dead ends: 977 [2020-09-25 03:21:06,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:21:06,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2020-09-25 03:21:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 965. [2020-09-25 03:21:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 03:21:06,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1180 transitions. [2020-09-25 03:21:06,608 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1180 transitions. Word has length 161 [2020-09-25 03:21:06,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:21:06,612 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1180 transitions. [2020-09-25 03:21:06,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:21:06,613 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1180 transitions. [2020-09-25 03:21:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 03:21:06,622 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:21:06,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:06,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:21:06,623 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:21:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:21:06,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1343420525, now seen corresponding path program 1 times [2020-09-25 03:21:06,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:21:06,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939057015] [2020-09-25 03:21:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:21:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:06,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:07,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:07,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:11,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:11,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 03:21:11,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:21:11,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 03:21:11,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 03:21:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:21:11,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 03:21:11,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:21:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:21:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:11,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:11,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:21:11,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:11,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 03:21:11,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:21:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:11,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:21:11,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:12,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:21:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:12,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:21:12,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 03:21:12,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:21:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:21:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 03:21:12,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:21:12,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939057015] [2020-09-25 03:21:12,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:21:12,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:21:12,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766204012] [2020-09-25 03:21:12,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:21:12,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:21:12,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:21:12,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:21:12,700 INFO L87 Difference]: Start difference. First operand 965 states and 1180 transitions. Second operand 12 states. [2020-09-25 03:21:13,061 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-09-25 03:21:15,012 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-09-25 03:21:17,614 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2020-09-25 03:21:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:21:18,696 INFO L93 Difference]: Finished difference Result 4076 states and 5337 transitions. [2020-09-25 03:21:18,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 03:21:18,696 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 165 [2020-09-25 03:21:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:21:18,710 INFO L225 Difference]: With dead ends: 4076 [2020-09-25 03:21:18,710 INFO L226 Difference]: Without dead ends: 3033 [2020-09-25 03:21:18,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2020-09-25 03:21:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3033 states. [2020-09-25 03:21:18,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3033 to 2793. [2020-09-25 03:21:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2793 states. [2020-09-25 03:21:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2793 states to 2793 states and 3327 transitions. [2020-09-25 03:21:18,805 INFO L78 Accepts]: Start accepts. Automaton has 2793 states and 3327 transitions. Word has length 165 [2020-09-25 03:21:18,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:21:18,807 INFO L479 AbstractCegarLoop]: Abstraction has 2793 states and 3327 transitions. [2020-09-25 03:21:18,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:21:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2793 states and 3327 transitions. [2020-09-25 03:21:18,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 03:21:18,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:21:18,817 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:18,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:21:18,817 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:21:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:21:18,818 INFO L82 PathProgramCache]: Analyzing trace with hash -632979727, now seen corresponding path program 1 times [2020-09-25 03:21:18,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:21:18,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112877222] [2020-09-25 03:21:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:21:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:18,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:18,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:21,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:22,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:23,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:23,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:23,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 03:21:23,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:21:23,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 03:21:23,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:21:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 03:21:23,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 03:21:23,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:21:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:24,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:24,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:21:24,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:21:24,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:21:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:21:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:24,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 03:21:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:24,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:24,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:24,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 03:21:24,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:21:24,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:21:24,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:21:24,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:21:24,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:21:24,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:24,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 03:21:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:24,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:24,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:21:24,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:21:24,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:21:24,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 03:21:24,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:21:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:21:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:21:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 03:21:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:21:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 03:21:24,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112877222] [2020-09-25 03:21:24,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:21:24,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:21:24,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288026742] [2020-09-25 03:21:24,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:21:24,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:21:24,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:21:24,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:21:24,263 INFO L87 Difference]: Start difference. First operand 2793 states and 3327 transitions. Second operand 6 states. [2020-09-25 03:21:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:21:26,133 INFO L93 Difference]: Finished difference Result 5603 states and 6727 transitions. [2020-09-25 03:21:26,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:21:26,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2020-09-25 03:21:26,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:21:26,151 INFO L225 Difference]: With dead ends: 5603 [2020-09-25 03:21:26,152 INFO L226 Difference]: Without dead ends: 2832 [2020-09-25 03:21:26,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:21:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2832 states. [2020-09-25 03:21:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2744. [2020-09-25 03:21:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2744 states. [2020-09-25 03:21:26,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2744 states to 2744 states and 3195 transitions. [2020-09-25 03:21:26,236 INFO L78 Accepts]: Start accepts. Automaton has 2744 states and 3195 transitions. Word has length 187 [2020-09-25 03:21:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:21:26,237 INFO L479 AbstractCegarLoop]: Abstraction has 2744 states and 3195 transitions. [2020-09-25 03:21:26,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:21:26,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2744 states and 3195 transitions. [2020-09-25 03:21:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 03:21:26,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:21:26,247 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:26,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:21:26,247 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:21:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:21:26,248 INFO L82 PathProgramCache]: Analyzing trace with hash -2114841379, now seen corresponding path program 1 times [2020-09-25 03:21:26,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:21:26,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309360294] [2020-09-25 03:21:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:21:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:21:26,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:26,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:21:26,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking...