/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/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:25,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:25,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:25,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:25,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:25,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:25,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:25,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:25,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:25,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:25,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:25,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:25,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:25,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:25,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:25,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:25,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:25,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:25,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:25,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:25,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:25,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:25,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:25,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:25,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:25,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:25,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:25,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:25,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:25,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 21:44:25,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:25,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:25,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:25,955 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 21:44:25,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:25,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:25,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:25,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:25,994 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:25,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:25,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:25,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:25,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:25,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:25,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:25,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:25,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:25,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:25,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:25,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:25,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:25,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:25,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:25,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:25,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:25,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:26,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:26,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:26,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:26,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:26,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:26,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:26,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:26,002 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 21:44:26,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:26,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:26,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:26,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:26,507 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:26,508 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-24 21:44:26,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e19e49024/dd5c962d521348ce9531fe7b37b6ad56/FLAGe5de1c679 [2020-09-24 21:44:27,250 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:27,251 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2020-09-24 21:44:27,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e19e49024/dd5c962d521348ce9531fe7b37b6ad56/FLAGe5de1c679 [2020-09-24 21:44:27,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e19e49024/dd5c962d521348ce9531fe7b37b6ad56 [2020-09-24 21:44:27,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:27,513 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:27,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:27,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:27,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:27,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:27, skipping insertion in model container [2020-09-24 21:44:27,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:27" (1/1) ... [2020-09-24 21:44:27,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:27,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:28,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:28,105 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:28,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:28,432 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:28,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28 WrapperNode [2020-09-24 21:44:28,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:28,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:28,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:28,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:28,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (1/1) ... [2020-09-24 21:44:28,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (1/1) ... [2020-09-24 21:44:28,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (1/1) ... [2020-09-24 21:44:28,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (1/1) ... [2020-09-24 21:44:28,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (1/1) ... [2020-09-24 21:44:28,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (1/1) ... [2020-09-24 21:44:28,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (1/1) ... [2020-09-24 21:44:28,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:28,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:28,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:28,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:28,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (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 21:44:28,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:28,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:28,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:30,109 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:30,109 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:30,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:30 BoogieIcfgContainer [2020-09-24 21:44:30,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:30,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:30,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:30,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:30,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:27" (1/3) ... [2020-09-24 21:44:30,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f80f4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:30, skipping insertion in model container [2020-09-24 21:44:30,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:28" (2/3) ... [2020-09-24 21:44:30,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f80f4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:30, skipping insertion in model container [2020-09-24 21:44:30,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:30" (3/3) ... [2020-09-24 21:44:30,130 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2020-09-24 21:44:30,142 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:30,154 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:30,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:30,224 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:30,225 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:30,225 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:30,225 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:30,225 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:30,225 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:30,226 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:30,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 21:44:30,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:30,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:30,277 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:30,288 INFO L82 PathProgramCache]: Analyzing trace with hash -843476993, now seen corresponding path program 1 times [2020-09-24 21:44:30,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:30,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195117963] [2020-09-24 21:44:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:30,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:31,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:31,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:31,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-24 21:44:31,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:31,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1082 [2020-09-24 21:44:31,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 21:44:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:44:31,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:31,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:31,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:31,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:31,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:31,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:44:31,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:31,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:31,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:31,851 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 21:44:31,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195117963] [2020-09-24 21:44:31,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:31,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:44:31,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26825920] [2020-09-24 21:44:31,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:44:31,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:31,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:44:31,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:44:31,886 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:44:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:34,023 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-24 21:44:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:44:34,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 21:44:34,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:34,052 INFO L225 Difference]: With dead ends: 1163 [2020-09-24 21:44:34,053 INFO L226 Difference]: Without dead ends: 634 [2020-09-24 21:44:34,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-24 21:44:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-24 21:44:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-24 21:44:34,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-24 21:44:34,186 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 64 [2020-09-24 21:44:34,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:34,187 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-24 21:44:34,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:44:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-24 21:44:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 21:44:34,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:34,208 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, 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] [2020-09-24 21:44:34,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:34,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:34,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1704622095, now seen corresponding path program 1 times [2020-09-24 21:44:34,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:34,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456182212] [2020-09-24 21:44:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:37,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 21:44:37,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:44:37,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3692 [2020-09-24 21:44:37,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:37,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:37,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 21:44:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:44:38,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:38,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:38,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 21:44:38,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:38,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:38,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:44:38,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:38,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:38,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 21:44:38,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:38,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 21:44:38,775 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:38,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456182212] [2020-09-24 21:44:38,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:38,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:38,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540988641] [2020-09-24 21:44:38,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:38,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:38,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:38,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:38,781 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 9 states. [2020-09-24 21:44:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:42,127 INFO L93 Difference]: Finished difference Result 1511 states and 1984 transitions. [2020-09-24 21:44:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:44:42,128 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 143 [2020-09-24 21:44:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:42,137 INFO L225 Difference]: With dead ends: 1511 [2020-09-24 21:44:42,137 INFO L226 Difference]: Without dead ends: 946 [2020-09-24 21:44:42,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:44:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2020-09-24 21:44:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 695. [2020-09-24 21:44:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:44:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 859 transitions. [2020-09-24 21:44:42,199 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 859 transitions. Word has length 143 [2020-09-24 21:44:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:42,202 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 859 transitions. [2020-09-24 21:44:42,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:42,202 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 859 transitions. [2020-09-24 21:44:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-24 21:44:42,208 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:42,209 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:42,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:42,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:42,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:42,210 INFO L82 PathProgramCache]: Analyzing trace with hash -490376792, now seen corresponding path program 1 times [2020-09-24 21:44:42,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:42,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685412771] [2020-09-24 21:44:42,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:44,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:47,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-09-24 21:44:47,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:44:47,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-24 21:44:47,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:44:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:44:47,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-24 21:44:47,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:47,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:47,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:44:47,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:47,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:47,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:44:47,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:47,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:47,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:47,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 21:44:47,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:47,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:47,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:44:47,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:47,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:47,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:48,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:48,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:44:48,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:48,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-09-24 21:44:48,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:48,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:44:48,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:44:48,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685412771] [2020-09-24 21:44:48,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:48,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:48,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061164671] [2020-09-24 21:44:48,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:48,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:48,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:48,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:48,594 INFO L87 Difference]: Start difference. First operand 695 states and 859 transitions. Second operand 9 states. [2020-09-24 21:44:51,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:51,947 INFO L93 Difference]: Finished difference Result 1586 states and 2072 transitions. [2020-09-24 21:44:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:44:51,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 272 [2020-09-24 21:44:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:51,958 INFO L225 Difference]: With dead ends: 1586 [2020-09-24 21:44:51,959 INFO L226 Difference]: Without dead ends: 1032 [2020-09-24 21:44:51,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:44:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-09-24 21:44:51,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 996. [2020-09-24 21:44:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-09-24 21:44:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1205 transitions. [2020-09-24 21:44:51,999 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1205 transitions. Word has length 272 [2020-09-24 21:44:52,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:52,000 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1205 transitions. [2020-09-24 21:44:52,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1205 transitions. [2020-09-24 21:44:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-09-24 21:44:52,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:52,007 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:44:52,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:44:52,007 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:52,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:52,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1274298786, now seen corresponding path program 1 times [2020-09-24 21:44:52,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:52,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197478162] [2020-09-24 21:44:52,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:52,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:52,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:52,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:53,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:57,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-09-24 21:44:57,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:44:57,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-09-24 21:44:57,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:44:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:57,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-09-24 21:44:57,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:57,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:44:57,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:57,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:57,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:57,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 21:44:57,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:57,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:58,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:58,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:44:58,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:58,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-09-24 21:44:58,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:58,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:44:58,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 70 proven. 38 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-24 21:44:59,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197478162] [2020-09-24 21:44:59,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:59,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:44:59,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130991120] [2020-09-24 21:44:59,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:44:59,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:59,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:44:59,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:44:59,126 INFO L87 Difference]: Start difference. First operand 996 states and 1205 transitions. Second operand 14 states. [2020-09-24 21:45:03,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:03,938 INFO L93 Difference]: Finished difference Result 2119 states and 2682 transitions. [2020-09-24 21:45:03,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:45:03,939 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 278 [2020-09-24 21:45:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:03,952 INFO L225 Difference]: With dead ends: 2119 [2020-09-24 21:45:03,953 INFO L226 Difference]: Without dead ends: 1288 [2020-09-24 21:45:03,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:45:03,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2020-09-24 21:45:04,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1207. [2020-09-24 21:45:04,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1207 states. [2020-09-24 21:45:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1459 transitions. [2020-09-24 21:45:04,018 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1459 transitions. Word has length 278 [2020-09-24 21:45:04,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:04,018 INFO L479 AbstractCegarLoop]: Abstraction has 1207 states and 1459 transitions. [2020-09-24 21:45:04,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:45:04,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1459 transitions. [2020-09-24 21:45:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-09-24 21:45:04,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:04,025 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:04,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:45:04,025 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:04,026 INFO L82 PathProgramCache]: Analyzing trace with hash -981280704, now seen corresponding path program 1 times [2020-09-24 21:45:04,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:04,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706963096] [2020-09-24 21:45:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:04,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:04,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-09-24 21:45:09,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:45:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-24 21:45:09,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:45:09,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:09,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 230 [2020-09-24 21:45:09,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:09,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:09,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:45:09,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:09,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:09,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:09,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:45:09,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:09,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-24 21:45:09,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:09,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:09,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:45:09,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:09,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:45:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:09,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:09,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:09,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:45:09,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:09,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 21:45:09,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:09,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:45:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:45:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-24 21:45:10,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706963096] [2020-09-24 21:45:10,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:10,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:10,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906309210] [2020-09-24 21:45:10,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:10,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:10,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:10,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:10,118 INFO L87 Difference]: Start difference. First operand 1207 states and 1459 transitions. Second operand 9 states. [2020-09-24 21:45:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:14,156 INFO L93 Difference]: Finished difference Result 2525 states and 3218 transitions. [2020-09-24 21:45:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:45:14,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 288 [2020-09-24 21:45:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:14,166 INFO L225 Difference]: With dead ends: 2525 [2020-09-24 21:45:14,166 INFO L226 Difference]: Without dead ends: 1678 [2020-09-24 21:45:14,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:45:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2020-09-24 21:45:14,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1587. [2020-09-24 21:45:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1587 states. [2020-09-24 21:45:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1587 states to 1587 states and 1993 transitions. [2020-09-24 21:45:14,230 INFO L78 Accepts]: Start accepts. Automaton has 1587 states and 1993 transitions. Word has length 288 [2020-09-24 21:45:14,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:14,231 INFO L479 AbstractCegarLoop]: Abstraction has 1587 states and 1993 transitions. [2020-09-24 21:45:14,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:14,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1587 states and 1993 transitions. [2020-09-24 21:45:14,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-24 21:45:14,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:14,240 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:14,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:45:14,241 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:14,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1815402433, now seen corresponding path program 1 times [2020-09-24 21:45:14,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:14,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370656516] [2020-09-24 21:45:14,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking...