/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:54:52,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:54:52,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:54:52,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:54:52,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:54:52,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:54:52,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:54:52,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:54:52,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:54:52,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:54:52,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:54:52,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:54:52,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:54:52,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:54:52,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:54:52,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:54:52,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:54:52,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:54:52,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:54:52,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:54:52,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:54:52,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:54:52,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:54:52,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:54:52,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:54:52,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:54:52,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:54:52,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:54:52,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:54:52,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:54:52,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:54:52,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:54:52,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:54:52,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:54:52,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:54:52,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:54:52,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:54:52,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:54:52,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:54:52,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:54:52,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:54:52,980 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 00:54:53,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:54:53,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:54:53,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:54:53,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:54:53,035 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:54:53,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:54:53,036 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:54:53,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:54:53,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:54:53,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:54:53,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:54:53,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:54:53,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:54:53,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:54:53,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:54:53,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:54:53,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:54:53,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:54:53,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:54:53,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:54:53,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:54:53,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:54:53,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:54:53,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:54:53,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:54:53,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:54:53,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:54:53,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:54:53,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:54:53,042 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:54:53,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:54:53,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:54:53,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:54:53,578 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:54:53,579 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:54:53,580 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-09-25 00:54:53,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccfae8a9e/687924004bca4f0eb5239bfd228b0cd2/FLAG591aff421 [2020-09-25 00:54:54,219 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:54:54,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-09-25 00:54:54,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccfae8a9e/687924004bca4f0eb5239bfd228b0cd2/FLAG591aff421 [2020-09-25 00:54:54,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ccfae8a9e/687924004bca4f0eb5239bfd228b0cd2 [2020-09-25 00:54:54,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:54:54,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:54:54,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:54,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:54:54,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:54:54,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54, skipping insertion in model container [2020-09-25 00:54:54,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:54:54,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:54:54,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:54,864 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:54:54,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:54,899 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:54:54,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54 WrapperNode [2020-09-25 00:54:54,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:54,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:54:54,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:54:54,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:54:54,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (1/1) ... [2020-09-25 00:54:54,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:54:54,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:54:54,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:54:54,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:54:54,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (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 00:54:55,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:54:55,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:54:55,106 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 00:54:55,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:54:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:54:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:54:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 00:54:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:54:55,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:54:55,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:54:55,339 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:54:55,340 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:54:55,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:55 BoogieIcfgContainer [2020-09-25 00:54:55,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:54:55,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:54:55,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:54:55,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:54:55,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:54:54" (1/3) ... [2020-09-25 00:54:55,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d6eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:55, skipping insertion in model container [2020-09-25 00:54:55,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:54" (2/3) ... [2020-09-25 00:54:55,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24d6eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:55, skipping insertion in model container [2020-09-25 00:54:55,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:55" (3/3) ... [2020-09-25 00:54:55,363 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2020-09-25 00:54:55,379 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:54:55,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:54:55,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:54:55,479 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:54:55,479 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:54:55,482 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:54:55,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:54:55,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:54:55,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:54:55,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:54:55,482 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:54:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 00:54:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 00:54:55,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:55,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:55,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:55,541 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-09-25 00:54:55,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:55,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638613868] [2020-09-25 00:54:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:55,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:55,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 00:54:55,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 00:54:55,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:54:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:55,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:54:55,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:55,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:55,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:55,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:55,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:55,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:55,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:55,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:55,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:54:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:55,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:55,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:55,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:55,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:54:55,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:54:55,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:55,917 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 00:54:55,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638613868] [2020-09-25 00:54:55,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:55,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:54:55,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480531253] [2020-09-25 00:54:55,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:54:55,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:55,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:54:55,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:54:55,951 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-25 00:54:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:56,050 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-09-25 00:54:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:56,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 00:54:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:56,065 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:54:56,065 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 00:54:56,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:56,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 00:54:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 00:54:56,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:54:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-25 00:54:56,131 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-09-25 00:54:56,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:56,132 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-25 00:54:56,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:54:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-25 00:54:56,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 00:54:56,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:56,136 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:54:56,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:54:56,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:56,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:56,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-09-25 00:54:56,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:56,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860722189] [2020-09-25 00:54:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:56,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:56,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 00:54:56,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-09-25 00:54:56,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:56,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 00:54:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:56,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:56,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:56,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:56,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:56,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:56,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:56,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:56,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:56,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:54:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:57,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:54:57,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 00:54:57,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:54:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:57,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:54:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:57,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:57,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:54:57,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:57,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:57,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:57,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:54:57,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:54:57,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860722189] [2020-09-25 00:54:57,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:57,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:54:57,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126074859] [2020-09-25 00:54:57,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:54:57,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:57,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:54:57,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:54:57,118 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2020-09-25 00:54:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:57,198 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2020-09-25 00:54:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:57,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-25 00:54:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:57,200 INFO L225 Difference]: With dead ends: 49 [2020-09-25 00:54:57,200 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 00:54:57,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:54:57,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 00:54:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-09-25 00:54:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 00:54:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-25 00:54:57,210 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 28 [2020-09-25 00:54:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:57,210 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-25 00:54:57,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:54:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-25 00:54:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 00:54:57,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:57,212 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 00:54:57,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:54:57,213 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:57,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times [2020-09-25 00:54:57,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:57,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561057854] [2020-09-25 00:54:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:57,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 00:54:57,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 00:54:57,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 00:54:57,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:57,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:54:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:57,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:57,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:57,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:57,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:57,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:57,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:57,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:57,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:57,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:54:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:57,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:54:57,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:57,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 00:54:57,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:57,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:54:57,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:57,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:54:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:57,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:57,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:57,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:57,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:54:57,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:57,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:57,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:54:57,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:54:57,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561057854] [2020-09-25 00:54:57,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:57,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:54:57,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100273094] [2020-09-25 00:54:57,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:54:57,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:57,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:54:57,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:54:57,718 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2020-09-25 00:54:57,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:57,810 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-25 00:54:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:54:57,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-25 00:54:57,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:57,812 INFO L225 Difference]: With dead ends: 41 [2020-09-25 00:54:57,812 INFO L226 Difference]: Without dead ends: 35 [2020-09-25 00:54:57,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:54:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-25 00:54:57,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-25 00:54:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 00:54:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-09-25 00:54:57,820 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-09-25 00:54:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:57,820 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-09-25 00:54:57,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:54:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-09-25 00:54:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 00:54:57,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:57,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 00:54:57,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:54:57,823 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:57,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:57,823 INFO L82 PathProgramCache]: Analyzing trace with hash 170302224, now seen corresponding path program 1 times [2020-09-25 00:54:57,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:57,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601567013] [2020-09-25 00:54:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:57,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:54:58,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:58,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 477 [2020-09-25 00:54:58,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 00:54:58,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:58,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:58,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:58,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:58,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:58,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:54:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:54:58,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:58,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-09-25 00:54:58,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:58,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:54:58,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:54:58,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:54:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:54:58,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 00:54:58,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:54:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:58,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:54:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:58,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:54:58,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:54:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:54:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:58,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 00:54:58,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601567013] [2020-09-25 00:54:58,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:58,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 00:54:58,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475685975] [2020-09-25 00:54:58,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:54:58,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:58,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:54:58,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:54:58,997 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 10 states. [2020-09-25 00:54:59,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:59,187 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-09-25 00:54:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:54:59,188 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-09-25 00:54:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:59,193 INFO L225 Difference]: With dead ends: 56 [2020-09-25 00:54:59,193 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 00:54:59,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:54:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 00:54:59,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-25 00:54:59,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 00:54:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-25 00:54:59,210 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 38 [2020-09-25 00:54:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:59,211 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-25 00:54:59,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:54:59,212 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-25 00:54:59,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 00:54:59,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:59,217 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:59,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:54:59,218 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:59,218 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times [2020-09-25 00:54:59,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:59,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558387465] [2020-09-25 00:54:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:54:59,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-09-25 00:54:59,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 00:54:59,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:59,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:00,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:00,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:00,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:55:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:55:00,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:55:00,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-09-25 00:55:00,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:00,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:00,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:00,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 00:55:00,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:55:00,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 00:55:00,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:55:00,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:55:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:00,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:00,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:00,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:55:00,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:00,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 00:55:00,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558387465] [2020-09-25 00:55:00,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:00,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:00,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233498445] [2020-09-25 00:55:00,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:00,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:00,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:00,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:00,666 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 9 states. [2020-09-25 00:55:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:00,752 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-09-25 00:55:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:55:00,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-25 00:55:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:00,753 INFO L225 Difference]: With dead ends: 41 [2020-09-25 00:55:00,753 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:55:00,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:55:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:55:00,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:55:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:55:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:55:00,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-09-25 00:55:00,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:00,756 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:55:00,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:55:00,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:55:00,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:55:00,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:55:00,785 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 00:55:00,785 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:55:00,786 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:55:00,786 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:55:00,786 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:55:00,786 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:55:00,786 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-25 00:55:00,787 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-25 00:55:00,787 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-25 00:55:00,787 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 00:55:00,787 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-25 00:55:00,787 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-25 00:55:00,787 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 00:55:00,787 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 00:55:00,788 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-25 00:55:00,788 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 00:55:00,788 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-25 00:55:00,788 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-25 00:55:00,788 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-25 00:55:00,788 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 00:55:00,788 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 00:55:00,789 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 00:55:00,789 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 00:55:00,789 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-25 00:55:00,789 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-25 00:55:00,789 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 00:55:00,789 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 00:55:00,789 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 00:55:00,790 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-25 00:55:00,790 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-25 00:55:00,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:55:00 BoogieIcfgContainer [2020-09-25 00:55:00,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:55:00,801 INFO L168 Benchmark]: Toolchain (without parser) took 6208.98 ms. Allocated memory was 143.1 MB in the beginning and 253.8 MB in the end (delta: 110.6 MB). Free memory was 98.3 MB in the beginning and 122.7 MB in the end (delta: -24.4 MB). Peak memory consumption was 86.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:00,802 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 116.5 MB in the beginning and 116.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:55:00,803 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.92 ms. Allocated memory is still 143.1 MB. Free memory was 97.7 MB in the beginning and 88.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:00,804 INFO L168 Benchmark]: Boogie Preprocessor took 32.46 ms. Allocated memory is still 143.1 MB. Free memory was 88.4 MB in the beginning and 87.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:00,805 INFO L168 Benchmark]: RCFGBuilder took 413.86 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 87.1 MB in the beginning and 167.0 MB in the end (delta: -79.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:00,806 INFO L168 Benchmark]: TraceAbstraction took 5446.11 ms. Allocated memory was 199.8 MB in the beginning and 253.8 MB in the end (delta: 54.0 MB). Free memory was 166.3 MB in the beginning and 125.0 MB in the end (delta: 41.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:00,810 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.1 MB. Free memory was 116.5 MB in the beginning and 116.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.92 ms. Allocated memory is still 143.1 MB. Free memory was 97.7 MB in the beginning and 88.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.46 ms. Allocated memory is still 143.1 MB. Free memory was 88.4 MB in the beginning and 87.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 413.86 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 87.1 MB in the beginning and 167.0 MB in the end (delta: -79.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5446.11 ms. Allocated memory was 199.8 MB in the beginning and 253.8 MB in the end (delta: 54.0 MB). Free memory was 166.3 MB in the beginning and 125.0 MB in the end (delta: 41.3 MB). Peak memory consumption was 95.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 28 SDslu, 605 SDs, 0 SdLazy, 184 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 145 ConstructedInterpolants, 0 QuantifiedInterpolants, 8697 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 32/43 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...