/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:23,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:23,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:23,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:23,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:23,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:23,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:23,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:23,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:23,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:23,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:23,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:23,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:23,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:23,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:23,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:23,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:23,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:23,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:23,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:23,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:23,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:23,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:23,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:23,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:23,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:23,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:23,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:23,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:23,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:23,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:23,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:23,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:23,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:23,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:23,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:23,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:23,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:23,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:23,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:23,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:23,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:46:23,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:23,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:23,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:23,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:23,126 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:23,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:23,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:23,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:23,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:23,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:23,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:23,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:23,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:23,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:23,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:23,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:23,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:23,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:23,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:23,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:23,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:23,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:23,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:23,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:23,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:23,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:23,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:23,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:23,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:23,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:46:23,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:23,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:23,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:23,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:23,586 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:23,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-24 21:46:23,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8296b0c/213db722e1a24ce0adba0c2873ad4f32/FLAGb34cae0bd [2020-09-24 21:46:24,356 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:24,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label58.c [2020-09-24 21:46:24,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8296b0c/213db722e1a24ce0adba0c2873ad4f32/FLAGb34cae0bd [2020-09-24 21:46:24,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d8296b0c/213db722e1a24ce0adba0c2873ad4f32 [2020-09-24 21:46:24,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:24,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:24,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:24,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:24,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:24,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:24" (1/1) ... [2020-09-24 21:46:24,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:24, skipping insertion in model container [2020-09-24 21:46:24,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:24" (1/1) ... [2020-09-24 21:46:24,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:24,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:25,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:25,342 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:25,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:25,588 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:25,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25 WrapperNode [2020-09-24 21:46:25,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:25,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:25,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:25,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:25,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (1/1) ... [2020-09-24 21:46:25,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (1/1) ... [2020-09-24 21:46:25,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (1/1) ... [2020-09-24 21:46:25,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (1/1) ... [2020-09-24 21:46:25,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (1/1) ... [2020-09-24 21:46:25,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (1/1) ... [2020-09-24 21:46:25,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (1/1) ... [2020-09-24 21:46:25,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:25,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:25,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:25,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:25,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:25,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:25,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:25,958 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:25,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:25,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:28,636 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:28,637 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:28,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:28 BoogieIcfgContainer [2020-09-24 21:46:28,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:28,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:28,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:28,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:28,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:24" (1/3) ... [2020-09-24 21:46:28,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daf7063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:28, skipping insertion in model container [2020-09-24 21:46:28,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:25" (2/3) ... [2020-09-24 21:46:28,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5daf7063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:28, skipping insertion in model container [2020-09-24 21:46:28,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:28" (3/3) ... [2020-09-24 21:46:28,662 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label58.c [2020-09-24 21:46:28,677 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:28,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:28,717 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:28,756 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:28,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:28,758 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:28,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:28,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:28,758 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:28,758 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:28,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-24 21:46:28,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-24 21:46:28,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:28,826 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] [2020-09-24 21:46:28,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:28,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1378965372, now seen corresponding path program 1 times [2020-09-24 21:46:28,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:28,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181928973] [2020-09-24 21:46:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:29,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:29,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:29,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:30,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:46:30,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:30,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 908 [2020-09-24 21:46:30,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:30,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:30,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 21:46:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:46:30,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:30,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:46:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 21:46:30,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:30,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181928973] [2020-09-24 21:46:30,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:30,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:46:30,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720939521] [2020-09-24 21:46:30,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:46:30,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:30,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:46:30,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:46:30,292 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-24 21:46:34,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:34,080 INFO L93 Difference]: Finished difference Result 1935 states and 2532 transitions. [2020-09-24 21:46:34,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:46:34,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-09-24 21:46:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:34,133 INFO L225 Difference]: With dead ends: 1935 [2020-09-24 21:46:34,133 INFO L226 Difference]: Without dead ends: 1050 [2020-09-24 21:46:34,149 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 21:46:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2020-09-24 21:46:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 997. [2020-09-24 21:46:34,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-09-24 21:46:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1185 transitions. [2020-09-24 21:46:34,347 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1185 transitions. Word has length 39 [2020-09-24 21:46:34,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:34,348 INFO L479 AbstractCegarLoop]: Abstraction has 997 states and 1185 transitions. [2020-09-24 21:46:34,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:46:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1185 transitions. [2020-09-24 21:46:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 21:46:34,362 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:34,363 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] [2020-09-24 21:46:34,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:34,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash 878303855, now seen corresponding path program 1 times [2020-09-24 21:46:34,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:34,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398003746] [2020-09-24 21:46:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:34,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:36,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:36,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 21:46:36,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2080 [2020-09-24 21:46:36,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:46:36,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 21:46:36,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:36,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:36,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:36,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:46:36,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:46:36,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:46:36,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:36,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 21:46:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:36,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:36,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:36,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:46:36,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-24 21:46:36,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 21:46:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:36,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398003746] [2020-09-24 21:46:36,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:36,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:46:36,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143602157] [2020-09-24 21:46:36,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:46:36,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:36,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:46:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:46:36,973 INFO L87 Difference]: Start difference. First operand 997 states and 1185 transitions. Second operand 7 states. [2020-09-24 21:46:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:42,058 INFO L93 Difference]: Finished difference Result 2723 states and 3356 transitions. [2020-09-24 21:46:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:46:42,059 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-09-24 21:46:42,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:42,071 INFO L225 Difference]: With dead ends: 2723 [2020-09-24 21:46:42,072 INFO L226 Difference]: Without dead ends: 1743 [2020-09-24 21:46:42,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:46:42,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2020-09-24 21:46:42,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1445. [2020-09-24 21:46:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1445 states. [2020-09-24 21:46:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1724 transitions. [2020-09-24 21:46:42,137 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1724 transitions. Word has length 121 [2020-09-24 21:46:42,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:42,137 INFO L479 AbstractCegarLoop]: Abstraction has 1445 states and 1724 transitions. [2020-09-24 21:46:42,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:46:42,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1724 transitions. [2020-09-24 21:46:42,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-24 21:46:42,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:42,140 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] [2020-09-24 21:46:42,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:42,141 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:42,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:42,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2121372736, now seen corresponding path program 1 times [2020-09-24 21:46:42,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:42,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047801267] [2020-09-24 21:46:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:42,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:42,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:46,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:46,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 21:46:46,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:46:46,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4118 [2020-09-24 21:46:46,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:46:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:46,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 21:46:46,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:46,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:46,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:46,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:46:46,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:46:46,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:46,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:46,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:46:46,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:46:46,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 21:46:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:46,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:47,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 21:46:47,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:47,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 576 [2020-09-24 21:46:47,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:47,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:47,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 21:46:47,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:46:47,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047801267] [2020-09-24 21:46:47,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:47,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:46:47,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869585051] [2020-09-24 21:46:47,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:46:47,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:47,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:46:47,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:46:47,483 INFO L87 Difference]: Start difference. First operand 1445 states and 1724 transitions. Second operand 11 states. [2020-09-24 21:46:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:56,460 INFO L93 Difference]: Finished difference Result 3439 states and 4261 transitions. [2020-09-24 21:46:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:46:56,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 125 [2020-09-24 21:46:56,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:56,473 INFO L225 Difference]: With dead ends: 3439 [2020-09-24 21:46:56,473 INFO L226 Difference]: Without dead ends: 2011 [2020-09-24 21:46:56,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-09-24 21:46:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2020-09-24 21:46:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1894. [2020-09-24 21:46:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1894 states. [2020-09-24 21:46:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 2202 transitions. [2020-09-24 21:46:56,531 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 2202 transitions. Word has length 125 [2020-09-24 21:46:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:56,531 INFO L479 AbstractCegarLoop]: Abstraction has 1894 states and 2202 transitions. [2020-09-24 21:46:56,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:46:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 2202 transitions. [2020-09-24 21:46:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 21:46:56,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:56,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:56,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:56,534 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash 779885706, now seen corresponding path program 1 times [2020-09-24 21:46:56,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:56,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444290075] [2020-09-24 21:46:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:58,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:01,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 21:47:01,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:47:01,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 21:47:01,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:47:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:47:01,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-24 21:47:01,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:01,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:01,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:47:01,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:01,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:47:01,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:01,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:47:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:01,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:47:01,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:01,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 21:47:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:01,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:02,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-24 21:47:02,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:02,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-24 21:47:02,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:47:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:47:02,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-24 21:47:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:47:02,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444290075] [2020-09-24 21:47:02,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:02,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:47:02,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097369023] [2020-09-24 21:47:02,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:47:02,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:02,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:47:02,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:47:02,817 INFO L87 Difference]: Start difference. First operand 1894 states and 2202 transitions. Second operand 9 states. [2020-09-24 21:47:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:47:09,412 INFO L93 Difference]: Finished difference Result 2769 states and 3386 transitions. [2020-09-24 21:47:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:47:09,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2020-09-24 21:47:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:47:09,426 INFO L225 Difference]: With dead ends: 2769 [2020-09-24 21:47:09,426 INFO L226 Difference]: Without dead ends: 2767 [2020-09-24 21:47:09,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:47:09,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2020-09-24 21:47:09,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2103. [2020-09-24 21:47:09,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2103 states. [2020-09-24 21:47:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 2553 transitions. [2020-09-24 21:47:09,489 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 2553 transitions. Word has length 164 [2020-09-24 21:47:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:47:09,490 INFO L479 AbstractCegarLoop]: Abstraction has 2103 states and 2553 transitions. [2020-09-24 21:47:09,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:47:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 2553 transitions. [2020-09-24 21:47:09,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-09-24 21:47:09,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:47:09,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:47:09,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:47:09,494 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:47:09,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:47:09,494 INFO L82 PathProgramCache]: Analyzing trace with hash -834495256, now seen corresponding path program 1 times [2020-09-24 21:47:09,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:47:09,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845796702] [2020-09-24 21:47:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:47:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:10,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:11,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:12,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking...