/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:09:12,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:09:12,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:09:12,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:09:12,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:09:12,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:09:12,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:09:12,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:09:12,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:09:12,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:09:12,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:09:12,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:09:12,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:09:12,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:09:12,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:09:12,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:09:12,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:09:12,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:09:12,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:09:12,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:09:12,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:09:12,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:09:12,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:09:12,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:09:12,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:09:12,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:09:12,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:09:12,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:09:12,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:09:12,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 17:09:12,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:09:12,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:09:12,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:09:12,981 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 [2020-09-24 17:09:13,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:09:13,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:09:13,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:09:13,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:09:13,009 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:09:13,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:09:13,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:09:13,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:09:13,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:09:13,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:09:13,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:09:13,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:09:13,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:09:13,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:09:13,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:09:13,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:09:13,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:09:13,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:09:13,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:09:13,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:09:13,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:09:13,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:09:13,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:09:13,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:09:13,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:09:13,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:09:13,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:09:13,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:09:13,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:09:13,014 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;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;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;log-additional-information=true; [2020-09-24 17:09:13,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:09:13,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:09:13,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:09:13,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:09:13,508 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:09:13,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-24 17:09:13,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768bf2fcc/c37bebcee0634ced81c14fa33ee2a720/FLAG2648913ee [2020-09-24 17:09:14,327 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:09:14,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-24 17:09:14,341 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768bf2fcc/c37bebcee0634ced81c14fa33ee2a720/FLAG2648913ee [2020-09-24 17:09:14,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/768bf2fcc/c37bebcee0634ced81c14fa33ee2a720 [2020-09-24 17:09:14,499 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:09:14,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:09:14,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:09:14,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:09:14,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:09:14,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:14" (1/1) ... [2020-09-24 17:09:14,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7cadc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:14, skipping insertion in model container [2020-09-24 17:09:14,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:14" (1/1) ... [2020-09-24 17:09:14,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:09:14,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:09:15,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:09:15,043 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:09:15,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:09:15,308 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:09:15,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15 WrapperNode [2020-09-24 17:09:15,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:09:15,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:09:15,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:09:15,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:09:15,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ... [2020-09-24 17:09:15,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ... [2020-09-24 17:09:15,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ... [2020-09-24 17:09:15,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ... [2020-09-24 17:09:15,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ... [2020-09-24 17:09:15,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ... [2020-09-24 17:09:15,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (1/1) ... [2020-09-24 17:09:15,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:09:15,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:09:15,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:09:15,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:09:15,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (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 [2020-09-24 17:09:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:09:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:09:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:09:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:09:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:09:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:09:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:09:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:09:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:09:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:09:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:09:16,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:09:16,875 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:09:16,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:16 BoogieIcfgContainer [2020-09-24 17:09:16,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:09:16,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:09:16,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:09:16,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:09:16,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:09:14" (1/3) ... [2020-09-24 17:09:16,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e584b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:16, skipping insertion in model container [2020-09-24 17:09:16,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:15" (2/3) ... [2020-09-24 17:09:16,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e584b9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:16, skipping insertion in model container [2020-09-24 17:09:16,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:16" (3/3) ... [2020-09-24 17:09:16,906 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-24 17:09:16,918 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:09:16,935 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:09:16,958 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:09:17,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:09:17,004 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:09:17,004 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:09:17,004 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:09:17,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:09:17,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:09:17,005 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:09:17,005 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:09:17,041 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 17:09:17,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 17:09:17,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:17,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:17,066 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:17,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-24 17:09:17,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:17,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339853739] [2020-09-24 17:09:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:17,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:17,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:18,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:19,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:21,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:22,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:24,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:24,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:29,123 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:29,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 17:09:29,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:09:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11770 [2020-09-24 17:09:29,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:09:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:09:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-24 17:09:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:09:29,913 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-09-24 17:09:30,064 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-09-24 17:09:30,215 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 36 [2020-09-24 17:09:30,365 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-09-24 17:09:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:30,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:30,756 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:30,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:09:30,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 17:09:30,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:09:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:30,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:09:30,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:31,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339853739] [2020-09-24 17:09:31,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:31,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 17:09:31,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707037060] [2020-09-24 17:09:31,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 17:09:31,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:31,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 17:09:31,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:09:31,035 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 17:09:31,407 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-24 17:09:31,720 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-09-24 17:09:31,942 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-24 17:09:32,202 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-24 17:09:32,612 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-24 17:09:33,622 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-24 17:09:34,068 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-24 17:09:34,918 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-09-24 17:09:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:37,530 INFO L93 Difference]: Finished difference Result 1528 states and 2153 transitions. [2020-09-24 17:09:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 17:09:37,533 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 136 [2020-09-24 17:09:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:37,568 INFO L225 Difference]: With dead ends: 1528 [2020-09-24 17:09:37,568 INFO L226 Difference]: Without dead ends: 909 [2020-09-24 17:09:37,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=367, Invalid=689, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 17:09:37,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2020-09-24 17:09:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 825. [2020-09-24 17:09:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-09-24 17:09:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 980 transitions. [2020-09-24 17:09:37,691 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 980 transitions. Word has length 136 [2020-09-24 17:09:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:37,693 INFO L479 AbstractCegarLoop]: Abstraction has 825 states and 980 transitions. [2020-09-24 17:09:37,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 17:09:37,693 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 980 transitions. [2020-09-24 17:09:37,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-24 17:09:37,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:37,707 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:37,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:09:37,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:37,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:37,708 INFO L82 PathProgramCache]: Analyzing trace with hash 881202700, now seen corresponding path program 1 times [2020-09-24 17:09:37,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:37,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567949384] [2020-09-24 17:09:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:37,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:40,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:53,482 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:53,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-24 17:09:53,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 17:09:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15724 [2020-09-24 17:09:53,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:09:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:09:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 17:09:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:54,178 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-09-24 17:09:54,315 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-09-24 17:09:54,466 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2020-09-24 17:09:54,597 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-09-24 17:09:54,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:54,856 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:54,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:09:54,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 17:09:54,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:09:54,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:09:54,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:54,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 17:09:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:55,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:55,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:09:55,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 17:09:55,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:09:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:09:55,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:09:55,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:55,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567949384] [2020-09-24 17:09:55,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:55,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 17:09:55,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026924104] [2020-09-24 17:09:55,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 17:09:55,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:55,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 17:09:55,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2020-09-24 17:09:55,332 INFO L87 Difference]: Start difference. First operand 825 states and 980 transitions. Second operand 21 states. [2020-09-24 17:09:56,150 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-09-24 17:09:56,433 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-09-24 17:09:57,173 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-09-24 17:09:57,439 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-09-24 17:09:58,250 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-09-24 17:09:58,933 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2020-09-24 17:09:59,667 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 89 [2020-09-24 17:10:00,262 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-09-24 17:10:00,564 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2020-09-24 17:10:00,816 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-09-24 17:10:02,238 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-09-24 17:10:02,631 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-09-24 17:10:02,997 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-09-24 17:10:03,228 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-09-24 17:10:03,481 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75