/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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test28-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:37:33,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:37:33,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:37:33,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:37:33,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:37:33,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:37:33,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:37:33,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:37:33,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:37:33,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:37:33,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:37:33,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:37:33,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:37:33,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:37:33,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:37:33,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:37:33,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:37:33,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:37:33,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:37:33,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:37:33,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:37:33,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:37:33,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:37:33,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:37:33,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:37:33,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:37:33,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:37:33,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:37:33,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:37:33,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 21:37:33,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:37:33,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:37:33,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:37:33,866 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 21:37:33,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:37:33,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:37:33,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:37:33,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:37:33,918 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:37:33,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:37:33,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:37:33,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:37:33,919 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:37:33,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:37:33,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:37:33,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:37:33,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:37:33,921 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:37:33,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:37:33,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:37:33,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:37:33,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:37:33,922 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:37:33,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:37:33,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:37:33,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:37:33,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:37:33,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:37:33,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:37:33,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:37:33,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:37:33,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:37:33,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:37:33,925 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:37:34,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:37:34,389 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:37:34,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:37:34,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:37:34,398 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:37:34,401 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test28-2.c [2020-09-24 21:37:34,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ff36a42/2c0c06afc55a4fd4b72f3c1046a1746e/FLAGf9556c748 [2020-09-24 21:37:35,018 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:37:35,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test28-2.c [2020-09-24 21:37:35,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ff36a42/2c0c06afc55a4fd4b72f3c1046a1746e/FLAGf9556c748 [2020-09-24 21:37:35,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10ff36a42/2c0c06afc55a4fd4b72f3c1046a1746e [2020-09-24 21:37:35,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:37:35,376 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:37:35,377 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:37:35,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:37:35,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:37:35,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e0c35a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35, skipping insertion in model container [2020-09-24 21:37:35,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:37:35,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:37:35,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:37:35,641 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:37:35,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:37:35,678 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:37:35,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35 WrapperNode [2020-09-24 21:37:35,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:37:35,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:37:35,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:37:35,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:37:35,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (1/1) ... [2020-09-24 21:37:35,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:37:35,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:37:35,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:37:35,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:37:35,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (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 21:37:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:37:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:37:35,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:37:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:37:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:37:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:37:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:37:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:37:35,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:37:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:37:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:37:35,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:37:36,148 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:37:36,148 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:37:36,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:37:36 BoogieIcfgContainer [2020-09-24 21:37:36,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:37:36,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:37:36,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:37:36,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:37:36,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:37:35" (1/3) ... [2020-09-24 21:37:36,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:37:36, skipping insertion in model container [2020-09-24 21:37:36,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:37:35" (2/3) ... [2020-09-24 21:37:36,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737760d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:37:36, skipping insertion in model container [2020-09-24 21:37:36,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:37:36" (3/3) ... [2020-09-24 21:37:36,179 INFO L109 eAbstractionObserver]: Analyzing ICFG test28-2.c [2020-09-24 21:37:36,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:37:36,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:37:36,225 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:37:36,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:37:36,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:37:36,261 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:37:36,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:37:36,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:37:36,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:37:36,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:37:36,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:37:36,285 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 21:37:36,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 21:37:36,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:37:36,293 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] [2020-09-24 21:37:36,294 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:37:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:37:36,300 INFO L82 PathProgramCache]: Analyzing trace with hash -374520961, now seen corresponding path program 1 times [2020-09-24 21:37:36,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:37:36,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772462523] [2020-09-24 21:37:36,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:37:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:37:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:36,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:36,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:36,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:37,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:37:37,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 21:37:37,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:37:37,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 802 [2020-09-24 21:37:37,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:37:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:37:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:37:37,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:37:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:37:37,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:37:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:37:37,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:37,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:37:37,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:37:37,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:37:37,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:37:37,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:37:37,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:37:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:37:37,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:37:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:37:37,461 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 21:37:37,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772462523] [2020-09-24 21:37:37,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:37:37,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:37:37,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511100158] [2020-09-24 21:37:37,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:37:37,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:37:37,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:37:37,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:37:37,499 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 7 states. [2020-09-24 21:37:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:37:37,763 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2020-09-24 21:37:37,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:37:37,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-24 21:37:37,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:37:37,778 INFO L225 Difference]: With dead ends: 84 [2020-09-24 21:37:37,779 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 21:37:37,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:37:37,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 21:37:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-09-24 21:37:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-24 21:37:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-24 21:37:37,834 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 24 [2020-09-24 21:37:37,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:37:37,835 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-24 21:37:37,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:37:37,835 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-24 21:37:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 21:37:37,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:37:37,836 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] [2020-09-24 21:37:37,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:37:37,837 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:37:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:37:37,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1073513505, now seen corresponding path program 1 times [2020-09-24 21:37:37,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:37:37,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519162888] [2020-09-24 21:37:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:37:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:37:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:38,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:37:38,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 21:37:38,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:37:38,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 21:37:38,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:37:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:37:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:37:38,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:37:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:37:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:37:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:37:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:38,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:37:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:37:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:37:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:37:38,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:37:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:37:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:37:38,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:37:38,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:37:38,095 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 21:37:38,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519162888] [2020-09-24 21:37:38,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:37:38,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:37:38,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486589156] [2020-09-24 21:37:38,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:37:38,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:37:38,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:37:38,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:37:38,100 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 6 states. [2020-09-24 21:37:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:37:38,247 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 21:37:38,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:37:38,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 21:37:38,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:37:38,250 INFO L225 Difference]: With dead ends: 47 [2020-09-24 21:37:38,250 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 21:37:38,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:37:38,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 21:37:38,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2020-09-24 21:37:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 21:37:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-09-24 21:37:38,259 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 24 [2020-09-24 21:37:38,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:37:38,259 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-09-24 21:37:38,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:37:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-09-24 21:37:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 21:37:38,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:37:38,261 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] [2020-09-24 21:37:38,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:37:38,262 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:37:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:37:38,263 INFO L82 PathProgramCache]: Analyzing trace with hash 334117663, now seen corresponding path program 1 times [2020-09-24 21:37:38,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:37:38,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544361068] [2020-09-24 21:37:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:37:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:37:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:38,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:38,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:38,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:37:38,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 21:37:38,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:37:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-24 21:37:38,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:37:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:37:38,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:37:38,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:37:38,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:37:38,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:37:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:37:38,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:38,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:37:38,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:37:38,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:37:38,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:37:38,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:37:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:37:38,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:37:38,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:37:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:37:38,741 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 21:37:38,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544361068] [2020-09-24 21:37:38,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:37:38,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:37:38,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108461955] [2020-09-24 21:37:38,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:37:38,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:37:38,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:37:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:37:38,745 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2020-09-24 21:37:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:37:38,993 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 21:37:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:37:38,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-24 21:37:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:37:38,995 INFO L225 Difference]: With dead ends: 43 [2020-09-24 21:37:38,995 INFO L226 Difference]: Without dead ends: 27 [2020-09-24 21:37:38,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:37:38,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-09-24 21:37:39,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-09-24 21:37:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-09-24 21:37:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-09-24 21:37:39,001 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 24 [2020-09-24 21:37:39,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:37:39,002 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-09-24 21:37:39,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:37:39,002 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-09-24 21:37:39,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 21:37:39,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:37:39,004 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] [2020-09-24 21:37:39,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:37:39,004 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:37:39,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:37:39,005 INFO L82 PathProgramCache]: Analyzing trace with hash -316312164, now seen corresponding path program 1 times [2020-09-24 21:37:39,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:37:39,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929024788] [2020-09-24 21:37:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:37:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:37:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:39,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:37:39,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:37:39,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:37:39,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-09-24 21:37:39,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:37:39,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:37:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:37:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:37:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:37:39,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:37:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:37:39,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:37:39,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:37:39,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:37:39,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:37:39,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:37:39,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:37:39,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:37:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:37:39,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:37:39,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:37:39,632 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 21:37:39,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929024788] [2020-09-24 21:37:39,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:37:39,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:37:39,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553174075] [2020-09-24 21:37:39,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:37:39,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:37:39,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:37:39,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:37:39,635 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand 8 states. [2020-09-24 21:37:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:37:39,804 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-09-24 21:37:39,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:37:39,805 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 21:37:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:37:39,805 INFO L225 Difference]: With dead ends: 27 [2020-09-24 21:37:39,806 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:37:39,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:37:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:37:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:37:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:37:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:37:39,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-24 21:37:39,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:37:39,808 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:37:39,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:37:39,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:37:39,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:37:39,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:37:39,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:37:39,848 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 21:37:39,848 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 21:37:39,848 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:37:39,848 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 21:37:39,849 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:37:39,849 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:37:39,849 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:37:39,849 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:37:39,849 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:37:39,850 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 21:37:39,850 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 28) no Hoare annotation was computed. [2020-09-24 21:37:39,850 INFO L268 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-09-24 21:37:39,850 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 21:37:39,850 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 21:37:39,850 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-24 21:37:39,851 INFO L268 CegarLoopResult]: For program point L20-2(line 20) no Hoare annotation was computed. [2020-09-24 21:37:39,851 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 21:37:39,851 INFO L268 CegarLoopResult]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2020-09-24 21:37:39,851 INFO L268 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2020-09-24 21:37:39,851 INFO L268 CegarLoopResult]: For program point L20-6(line 20) no Hoare annotation was computed. [2020-09-24 21:37:39,851 INFO L268 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2020-09-24 21:37:39,852 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,852 INFO L268 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2020-09-24 21:37:39,852 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,852 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,852 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,853 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,853 INFO L268 CegarLoopResult]: For program point L12-5(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,853 INFO L268 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,853 INFO L268 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,853 INFO L268 CegarLoopResult]: For program point L12-8(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,853 INFO L268 CegarLoopResult]: For program point L12-9(line 12) no Hoare annotation was computed. [2020-09-24 21:37:39,854 INFO L264 CegarLoopResult]: At program point L21(lines 11 28) the Hoare annotation is: false [2020-09-24 21:37:39,854 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 21:37:39,854 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 28) no Hoare annotation was computed. [2020-09-24 21:37:39,854 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 21:37:39,854 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2020-09-24 21:37:39,855 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 28) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 21:37:39,855 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 21:37:39,855 INFO L268 CegarLoopResult]: For program point L18-1(lines 15 19) no Hoare annotation was computed. [2020-09-24 21:37:39,855 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 21:37:39,855 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 21:37:39,856 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-24 21:37:39,856 INFO L268 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-09-24 21:37:39,856 INFO L268 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-09-24 21:37:39,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:37:39 BoogieIcfgContainer [2020-09-24 21:37:39,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:37:39,873 INFO L168 Benchmark]: Toolchain (without parser) took 4499.59 ms. Allocated memory was 141.0 MB in the beginning and 243.3 MB in the end (delta: 102.2 MB). Free memory was 104.1 MB in the beginning and 132.9 MB in the end (delta: -28.8 MB). Peak memory consumption was 73.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:37:39,874 INFO L168 Benchmark]: CDTParser took 1.69 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:37:39,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.86 ms. Allocated memory is still 141.0 MB. Free memory was 103.5 MB in the beginning and 93.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 21:37:39,876 INFO L168 Benchmark]: Boogie Preprocessor took 115.05 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 182.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:37:39,876 INFO L168 Benchmark]: RCFGBuilder took 365.53 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 166.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:37:39,877 INFO L168 Benchmark]: TraceAbstraction took 3707.36 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 165.7 MB in the beginning and 132.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:37:39,881 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.69 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.86 ms. Allocated memory is still 141.0 MB. Free memory was 103.5 MB in the beginning and 93.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.05 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 182.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 365.53 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 166.3 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3707.36 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 165.7 MB in the beginning and 132.9 MB in the end (delta: 32.8 MB). Peak memory consumption was 71.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: 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 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 164 SDslu, 292 SDs, 0 SdLazy, 284 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, 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, 4 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 6495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...