/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=NARROWEST --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/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:15:34,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:15:34,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:15:34,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:15:34,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:15:34,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:15:34,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:15:34,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:15:34,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:15:34,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:15:34,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:15:34,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:15:34,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:15:34,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:15:34,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:15:34,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:15:34,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:15:34,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:15:34,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:15:34,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:15:34,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:15:34,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:15:34,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:15:34,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:15:34,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:15:34,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:15:34,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:15:34,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:15:34,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:15:34,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:15:34,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:15:34,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:15:34,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:15:34,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:15:34,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:15:34,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:15:34,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:15:34,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:15:34,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:15:34,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:15:34,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:15:34,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:15:34,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:15:34,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:15:34,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:15:34,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:15:34,245 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:15:34,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:15:34,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:15:34,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:15:34,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:15:34,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:15:34,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:15:34,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:15:34,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:15:34,249 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:15:34,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:15:34,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:15:34,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:15:34,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:15:34,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:15:34,250 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:15:34,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:15:34,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:15:34,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:15:34,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:15:34,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:15:34,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:15:34,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:15:34,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:15:34,252 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:15:34,252 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:15:34,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:15:34,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:15:34,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:15:34,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:15:34,774 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:15:34,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 02:15:34,866 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/901797ee1/b025df55d01946779069509ac8113dd9/FLAG1345cd270 [2020-09-25 02:15:35,562 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:15:35,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-25 02:15:35,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/901797ee1/b025df55d01946779069509ac8113dd9/FLAG1345cd270 [2020-09-25 02:15:35,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/901797ee1/b025df55d01946779069509ac8113dd9 [2020-09-25 02:15:35,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:15:35,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:15:35,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:15:35,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:15:35,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:15:35,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:15:35" (1/1) ... [2020-09-25 02:15:35,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:35, skipping insertion in model container [2020-09-25 02:15:35,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:15:35" (1/1) ... [2020-09-25 02:15:35,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:15:35,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:15:36,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:15:36,647 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:15:36,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:15:36,837 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:15:36,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36 WrapperNode [2020-09-25 02:15:36,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:15:36,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:15:36,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:15:36,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:15:36,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (1/1) ... [2020-09-25 02:15:36,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (1/1) ... [2020-09-25 02:15:36,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (1/1) ... [2020-09-25 02:15:36,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (1/1) ... [2020-09-25 02:15:36,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (1/1) ... [2020-09-25 02:15:37,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (1/1) ... [2020-09-25 02:15:37,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (1/1) ... [2020-09-25 02:15:37,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:15:37,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:15:37,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:15:37,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:15:37,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:15:37,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:15:37,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:15:37,126 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 02:15:37,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:15:37,126 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 02:15:37,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:15:37,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:15:37,127 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:15:37,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:15:37,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:15:37,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:15:39,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:15:39,613 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:15:39,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:15:39 BoogieIcfgContainer [2020-09-25 02:15:39,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:15:39,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:15:39,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:15:39,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:15:39,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:15:35" (1/3) ... [2020-09-25 02:15:39,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b03a34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:15:39, skipping insertion in model container [2020-09-25 02:15:39,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:15:36" (2/3) ... [2020-09-25 02:15:39,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b03a34f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:15:39, skipping insertion in model container [2020-09-25 02:15:39,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:15:39" (3/3) ... [2020-09-25 02:15:39,638 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-25 02:15:39,654 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:15:39,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:15:39,694 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:15:39,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:15:39,738 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:15:39,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:15:39,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:15:39,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:15:39,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:15:39,739 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:15:39,739 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:15:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 02:15:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 02:15:39,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:39,797 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] [2020-09-25 02:15:39,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:39,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:39,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-25 02:15:39,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:39,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099427457] [2020-09-25 02:15:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:40,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:40,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:40,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:40,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:15:40,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:15:40,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 829 [2020-09-25 02:15:40,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:40,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:15:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:15:40,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:15:40,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 02:15:40,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:40,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:40,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:40,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:15:40,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 02:15:40,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:40,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:15:40,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:15:41,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099427457] [2020-09-25 02:15:41,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:15:41,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:15:41,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432569592] [2020-09-25 02:15:41,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:15:41,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:41,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:15:41,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:15:41,045 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 5 states. [2020-09-25 02:15:46,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:46,479 INFO L93 Difference]: Finished difference Result 2361 states and 3156 transitions. [2020-09-25 02:15:46,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:15:46,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-09-25 02:15:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:46,518 INFO L225 Difference]: With dead ends: 2361 [2020-09-25 02:15:46,519 INFO L226 Difference]: Without dead ends: 1487 [2020-09-25 02:15:46,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:15:46,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2020-09-25 02:15:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1155. [2020-09-25 02:15:46,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-09-25 02:15:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1484 transitions. [2020-09-25 02:15:46,669 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1484 transitions. Word has length 39 [2020-09-25 02:15:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:46,670 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1484 transitions. [2020-09-25 02:15:46,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:15:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1484 transitions. [2020-09-25 02:15:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-25 02:15:46,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:46,677 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:15:46,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:15:46,678 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:46,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:46,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1767258319, now seen corresponding path program 1 times [2020-09-25 02:15:46,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:46,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612058931] [2020-09-25 02:15:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:46,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:46,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:47,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:48,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:50,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:50,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 02:15:50,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:15:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3586 [2020-09-25 02:15:50,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 02:15:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:15:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:50,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:50,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:15:50,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:50,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:15:50,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:50,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:50,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 02:15:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:50,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:50,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:15:50,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 02:15:50,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:15:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 02:15:50,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:15:50,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612058931] [2020-09-25 02:15:50,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:50,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 02:15:50,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109810577] [2020-09-25 02:15:50,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:15:50,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:50,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:15:50,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:15:50,780 INFO L87 Difference]: Start difference. First operand 1155 states and 1484 transitions. Second operand 5 states. [2020-09-25 02:15:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:15:54,411 INFO L93 Difference]: Finished difference Result 2906 states and 3919 transitions. [2020-09-25 02:15:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:15:54,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-09-25 02:15:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:15:54,423 INFO L225 Difference]: With dead ends: 2906 [2020-09-25 02:15:54,424 INFO L226 Difference]: Without dead ends: 1768 [2020-09-25 02:15:54,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:15:54,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2020-09-25 02:15:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1748. [2020-09-25 02:15:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2020-09-25 02:15:54,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2220 transitions. [2020-09-25 02:15:54,501 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2220 transitions. Word has length 120 [2020-09-25 02:15:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:15:54,502 INFO L479 AbstractCegarLoop]: Abstraction has 1748 states and 2220 transitions. [2020-09-25 02:15:54,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:15:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2220 transitions. [2020-09-25 02:15:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 02:15:54,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:15:54,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:15:54,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:15:54,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:15:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:15:54,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1373722232, now seen corresponding path program 1 times [2020-09-25 02:15:54,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:15:54,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5739507] [2020-09-25 02:15:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:15:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:54,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:56,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:57,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:57,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 02:15:57,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:15:57,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3440 [2020-09-25 02:15:57,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:15:57,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 02:15:57,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:15:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:58,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:15:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:58,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:58,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:15:58,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:15:58,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:15:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:58,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:15:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:15:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 02:15:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:15:58,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:15:58,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:15:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 02:15:58,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:15:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 02:15:58,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:15:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:15:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:15:58,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 02:15:58,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:15:58,651 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:15:58,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5739507] [2020-09-25 02:15:58,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:15:58,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 02:15:58,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566461457] [2020-09-25 02:15:58,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:15:58,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:15:58,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:15:58,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:15:58,655 INFO L87 Difference]: Start difference. First operand 1748 states and 2220 transitions. Second operand 8 states. [2020-09-25 02:16:05,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:16:05,070 INFO L93 Difference]: Finished difference Result 3914 states and 4991 transitions. [2020-09-25 02:16:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:16:05,071 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-09-25 02:16:05,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:16:05,086 INFO L225 Difference]: With dead ends: 3914 [2020-09-25 02:16:05,087 INFO L226 Difference]: Without dead ends: 2157 [2020-09-25 02:16:05,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:16:05,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-09-25 02:16:05,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 2143. [2020-09-25 02:16:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2143 states. [2020-09-25 02:16:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 2650 transitions. [2020-09-25 02:16:05,170 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 2650 transitions. Word has length 128 [2020-09-25 02:16:05,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:16:05,173 INFO L479 AbstractCegarLoop]: Abstraction has 2143 states and 2650 transitions. [2020-09-25 02:16:05,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:16:05,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 2650 transitions. [2020-09-25 02:16:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 02:16:05,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:16:05,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 02:16:05,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:16:05,183 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:16:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:16:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1820222674, now seen corresponding path program 1 times [2020-09-25 02:16:05,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:16:05,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219556184] [2020-09-25 02:16:05,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:16:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:16:05,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:05,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:05,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:07,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:08,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:09,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:10,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:16:10,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 02:16:10,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 02:16:10,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 02:16:10,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:16:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:16:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 02:16:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 02:16:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:16:10,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:16:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:16:10,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:10,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:16:10,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 02:16:10,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:16:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:16:10,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:16:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:16:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:16:10,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:16:10,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:16:10,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 02:16:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:16:10,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:10,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:16:10,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 02:16:10,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:16:10,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 02:16:10,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:16:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:16:10,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:16:10,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 02:16:10,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:16:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 02:16:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:16:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:11,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:16:11,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 02:16:11,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:16:11,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-09-25 02:16:11,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:16:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:16:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 02:16:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 02:16:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:16:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 02:16:12,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219556184] [2020-09-25 02:16:12,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:16:12,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 02:16:12,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080710324] [2020-09-25 02:16:12,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 02:16:12,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:16:12,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 02:16:12,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-09-25 02:16:12,222 INFO L87 Difference]: Start difference. First operand 2143 states and 2650 transitions. Second operand 13 states. [2020-09-25 02:16:12,574 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-09-25 02:16:12,816 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-09-25 02:16:13,149 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-09-25 02:16:13,482 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-09-25 02:16:14,391 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-09-25 02:16:14,522 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-09-25 02:16:14,855 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-09-25 02:16:15,024 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-09-25 02:16:15,867 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-09-25 02:16:16,034 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-09-25 02:16:19,045 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-09-25 02:16:19,707 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-09-25 02:16:20,958 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-09-25 02:16:21,280 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2020-09-25 02:16:22,298 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-09-25 02:16:22,644 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-09-25 02:16:23,007 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-09-25 02:16:23,839 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2020-09-25 02:16:24,146 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2020-09-25 02:16:25,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:16:25,718 INFO L93 Difference]: Finished difference Result 5420 states and 6934 transitions. [2020-09-25 02:16:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 02:16:25,719 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 231 [2020-09-25 02:16:25,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:16:25,734 INFO L225 Difference]: With dead ends: 5420 [2020-09-25 02:16:25,734 INFO L226 Difference]: Without dead ends: 2819 [2020-09-25 02:16:25,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=503, Invalid=1477, Unknown=0, NotChecked=0, Total=1980 [2020-09-25 02:16:25,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2020-09-25 02:16:25,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2322. [2020-09-25 02:16:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2322 states. [2020-09-25 02:16:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 2839 transitions. [2020-09-25 02:16:25,807 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 2839 transitions. Word has length 231 [2020-09-25 02:16:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:16:25,808 INFO L479 AbstractCegarLoop]: Abstraction has 2322 states and 2839 transitions. [2020-09-25 02:16:25,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 02:16:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 2839 transitions. [2020-09-25 02:16:25,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 02:16:25,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:16:25,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 02:16:25,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:16:25,814 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:16:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:16:25,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1691968567, now seen corresponding path program 1 times [2020-09-25 02:16:25,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:16:25,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179248759] [2020-09-25 02:16:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:16:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:16:25,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:26,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:16:26,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking...