/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:11:36,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:11:36,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:11:36,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:11:36,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:11:36,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:11:36,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:11:36,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:11:36,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:11:36,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:11:36,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:11:36,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:11:36,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:11:36,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:11:36,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:11:36,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:11:36,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:11:36,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:11:36,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:11:36,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:11:36,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:11:36,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:11:36,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:11:36,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:11:36,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:11:36,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:11:36,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:11:36,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:11:36,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:11:36,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 17:11:36,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:11:36,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:11:36,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:11:36,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:11:36,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:11:36,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:11:36,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:11:36,883 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:11:36,883 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:11:36,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:11:36,884 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:11:36,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:11:36,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:11:36,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:11:36,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:11:36,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:11:36,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:11:36,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:11:36,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:11:36,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:11:36,886 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:11:36,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:11:36,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:11:36,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:11:36,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:11:36,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:11:36,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:11:36,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:11:36,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:11:36,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:11:36,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:11:36,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:11:36,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:11:36,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:11:37,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:11:37,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:11:37,357 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:11:37,359 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:11:37,359 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:11:37,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-24 17:11:37,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1cdf2bcc/bf4a8b2751d24d2f9080650636aecf76/FLAGe805484d9 [2020-09-24 17:11:38,060 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:11:38,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label07.c [2020-09-24 17:11:38,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1cdf2bcc/bf4a8b2751d24d2f9080650636aecf76/FLAGe805484d9 [2020-09-24 17:11:38,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1cdf2bcc/bf4a8b2751d24d2f9080650636aecf76 [2020-09-24 17:11:38,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:11:38,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:11:38,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:11:38,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:11:38,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:11:38,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38, skipping insertion in model container [2020-09-24 17:11:38,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:11:38,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:11:38,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:11:38,971 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:11:39,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:11:39,227 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:11:39,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39 WrapperNode [2020-09-24 17:11:39,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:11:39,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:11:39,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:11:39,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:11:39,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (1/1) ... [2020-09-24 17:11:39,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (1/1) ... [2020-09-24 17:11:39,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (1/1) ... [2020-09-24 17:11:39,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (1/1) ... [2020-09-24 17:11:39,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (1/1) ... [2020-09-24 17:11:39,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (1/1) ... [2020-09-24 17:11:39,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (1/1) ... [2020-09-24 17:11:39,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:11:39,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:11:39,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:11:39,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:11:39,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:11:39,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:11:39,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:11:39,422 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:11:39,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:11:39,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:11:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:11:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:11:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:11:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:11:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:11:39,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:11:40,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:11:40,781 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:11:40,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:11:40 BoogieIcfgContainer [2020-09-24 17:11:40,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:11:40,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:11:40,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:11:40,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:11:40,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:11:38" (1/3) ... [2020-09-24 17:11:40,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:11:40, skipping insertion in model container [2020-09-24 17:11:40,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:39" (2/3) ... [2020-09-24 17:11:40,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb4822a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:11:40, skipping insertion in model container [2020-09-24 17:11:40,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:11:40" (3/3) ... [2020-09-24 17:11:40,811 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label07.c [2020-09-24 17:11:40,823 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:11:40,843 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:11:40,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:11:40,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:11:40,911 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:11:40,911 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:11:40,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:11:40,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:11:40,912 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:11:40,912 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:11:40,912 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:11:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 17:11:40,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 17:11:40,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:11:40,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:11:40,975 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:11:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:11:40,984 INFO L82 PathProgramCache]: Analyzing trace with hash 228287402, now seen corresponding path program 1 times [2020-09-24 17:11:40,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:11:40,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087928403] [2020-09-24 17:11:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:11:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:11:41,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:41,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:42,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:43,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:44,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:45,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:51,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:51,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:56,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:59,747 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:11:59,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-24 17:11:59,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 17:11:59,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18477 [2020-09-24 17:11:59,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:11:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:11:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 17:11:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-24 17:11:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:11:59,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:11:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:11:59,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:00,036 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:00,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:12:00,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:12:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 17:12:00,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:12:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:12:00,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:12:00,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:12:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:12:00,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087928403] [2020-09-24 17:12:00,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:12:00,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:12:00,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932203284] [2020-09-24 17:12:00,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:12:00,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:12:00,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:12:00,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:12:00,159 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 17:12:02,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:12:02,565 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-24 17:12:02,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:12:02,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2020-09-24 17:12:02,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:12:02,597 INFO L225 Difference]: With dead ends: 1396 [2020-09-24 17:12:02,597 INFO L226 Difference]: Without dead ends: 788 [2020-09-24 17:12:02,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:12:02,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-24 17:12:02,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-24 17:12:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-24 17:12:02,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-24 17:12:02,723 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 165 [2020-09-24 17:12:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:12:02,724 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-24 17:12:02,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:12:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-24 17:12:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 17:12:02,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:12:02,737 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:12:02,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:12:02,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:12:02,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:12:02,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1146867158, now seen corresponding path program 1 times [2020-09-24 17:12:02,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:12:02,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959179019] [2020-09-24 17:12:02,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:12:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:03,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:03,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:06,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:06,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:07,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:14,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:25,574 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:25,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 17:12:25,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 17:12:25,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22763 [2020-09-24 17:12:25,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 17:12:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 17:12:25,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-24 17:12:25,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:12:26,290 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-09-24 17:12:26,523 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2020-09-24 17:12:26,718 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-09-24 17:12:26,948 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2020-09-24 17:12:27,162 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-09-24 17:12:27,353 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-09-24 17:12:27,571 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 39 [2020-09-24 17:12:27,773 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-09-24 17:12:27,933 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 29 [2020-09-24 17:12:28,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:12:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:28,229 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:28,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:12:28,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:12:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:12:28,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:12:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:12:28,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:12:28,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:12:28,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 17:12:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:28,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:28,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:28,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:28,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:12:28,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:12:28,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 17:12:28,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:12:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:12:28,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:12:28,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:12:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:12:29,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959179019] [2020-09-24 17:12:29,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:12:29,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 17:12:29,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507734242] [2020-09-24 17:12:29,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 17:12:29,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:12:29,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 17:12:29,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:12:29,023 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 24 states.