/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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:46:12,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:46:12,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:46:12,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:46:12,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:46:12,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:46:12,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:46:12,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:46:12,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:46:12,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:46:12,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:46:12,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:46:12,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:46:12,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:46:12,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:46:12,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:46:12,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:46:12,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:46:12,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:46:12,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:46:12,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:46:12,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:46:12,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:46:12,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:46:12,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:46:12,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:46:12,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:46:12,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:46:12,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:46:12,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:46:12,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:46:12,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:46:12,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:46:12,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:46:12,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:46:12,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:46:12,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:46:12,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:46:12,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:46:12,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:46:12,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:46:12,460 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 21:46:12,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:46:12,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:46:12,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:46:12,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:46:12,512 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:46:12,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:46:12,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:46:12,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:46:12,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:46:12,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:46:12,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:46:12,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:46:12,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:46:12,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:46:12,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:46:12,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:46:12,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:46:12,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:46:12,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:46:12,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:46:12,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:46:12,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:46:12,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:46:12,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:46:12,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:46:12,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:46:12,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:46:12,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:46:12,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:46:12,518 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 21:46:13,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:46:13,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:46:13,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:46:13,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:46:13,061 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:46:13,063 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-24 21:46:13,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b888411e7/677baf30a39c4c84904c1bd4a1cdd507/FLAG71701f9d2 [2020-09-24 21:46:13,817 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:46:13,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label55.c [2020-09-24 21:46:13,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b888411e7/677baf30a39c4c84904c1bd4a1cdd507/FLAG71701f9d2 [2020-09-24 21:46:14,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b888411e7/677baf30a39c4c84904c1bd4a1cdd507 [2020-09-24 21:46:14,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:46:14,075 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:46:14,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:14,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:46:14,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:46:14,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:14,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fc400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14, skipping insertion in model container [2020-09-24 21:46:14,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:14,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:46:14,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:46:14,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:14,763 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:46:14,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:46:14,964 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:46:14,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14 WrapperNode [2020-09-24 21:46:14,966 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:46:14,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:46:14,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:46:14,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:46:14,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:14,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:15,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:15,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:15,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:15,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:15,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (1/1) ... [2020-09-24 21:46:15,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:46:15,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:46:15,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:46:15,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:46:15,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (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 21:46:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:46:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:46:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:46:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:46:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:46:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:46:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:46:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:46:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:46:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:46:15,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:46:16,726 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:46:16,726 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:46:16,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:16 BoogieIcfgContainer [2020-09-24 21:46:16,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:46:16,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:46:16,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:46:16,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:46:16,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:46:14" (1/3) ... [2020-09-24 21:46:16,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b340eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:16, skipping insertion in model container [2020-09-24 21:46:16,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:46:14" (2/3) ... [2020-09-24 21:46:16,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b340eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:46:16, skipping insertion in model container [2020-09-24 21:46:16,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:46:16" (3/3) ... [2020-09-24 21:46:16,746 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label55.c [2020-09-24 21:46:16,759 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:46:16,771 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:46:16,796 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:46:16,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:46:16,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:46:16,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:46:16,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:46:16,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:46:16,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:46:16,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:46:16,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:46:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:46:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 21:46:16,884 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:16,886 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] [2020-09-24 21:46:16,886 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:16,896 INFO L82 PathProgramCache]: Analyzing trace with hash -18090369, now seen corresponding path program 1 times [2020-09-24 21:46:16,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:16,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729906779] [2020-09-24 21:46:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:17,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:46:17,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:46:17,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-09-24 21:46:17,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:17,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 21:46:17,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:46:17,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:17,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:17,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:17,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:46:17,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:17,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:17,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:17,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:17,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:17,993 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 21:46:17,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729906779] [2020-09-24 21:46:17,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:46:17,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:46:17,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492511300] [2020-09-24 21:46:18,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:46:18,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:18,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:46:18,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:46:18,028 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:46:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:20,243 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-24 21:46:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:46:20,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-24 21:46:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:20,266 INFO L225 Difference]: With dead ends: 1104 [2020-09-24 21:46:20,266 INFO L226 Difference]: Without dead ends: 578 [2020-09-24 21:46:20,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 21:46:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-24 21:46:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-24 21:46:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-24 21:46:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-24 21:46:20,371 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 37 [2020-09-24 21:46:20,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:20,371 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-24 21:46:20,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:46:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-24 21:46:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-24 21:46:20,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:20,379 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] [2020-09-24 21:46:20,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:46:20,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:20,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1996109808, now seen corresponding path program 1 times [2020-09-24 21:46:20,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:20,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523097250] [2020-09-24 21:46:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:25,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-24 21:46:25,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:46:25,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4684 [2020-09-24 21:46:25,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:25,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:46:25,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-24 21:46:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:25,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:25,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:25,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:25,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 21:46:25,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:46:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:25,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:46:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:25,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:25,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:25,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:25,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-09-24 21:46:25,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:25,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-24 21:46:26,235 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 21:46:26,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523097250] [2020-09-24 21:46:26,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:26,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:46:26,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125364900] [2020-09-24 21:46:26,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:46:26,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:26,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:46:26,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:46:26,242 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 9 states. [2020-09-24 21:46:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:31,743 INFO L93 Difference]: Finished difference Result 1290 states and 1601 transitions. [2020-09-24 21:46:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:31,744 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-09-24 21:46:31,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:31,751 INFO L225 Difference]: With dead ends: 1290 [2020-09-24 21:46:31,751 INFO L226 Difference]: Without dead ends: 761 [2020-09-24 21:46:31,755 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:46:31,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2020-09-24 21:46:31,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 697. [2020-09-24 21:46:31,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-24 21:46:31,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 863 transitions. [2020-09-24 21:46:31,823 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 863 transitions. Word has length 116 [2020-09-24 21:46:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:31,824 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 863 transitions. [2020-09-24 21:46:31,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:46:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 863 transitions. [2020-09-24 21:46:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-24 21:46:31,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:31,829 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] [2020-09-24 21:46:31,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:46:31,830 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:31,830 INFO L82 PathProgramCache]: Analyzing trace with hash 804111666, now seen corresponding path program 1 times [2020-09-24 21:46:31,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:31,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312698109] [2020-09-24 21:46:31,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:31,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:32,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:32,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:34,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:34,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-24 21:46:34,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:46:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2817 [2020-09-24 21:46:34,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:46:34,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:34,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:34,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:34,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:46:34,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:34,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:34,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:34,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:46:34,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:34,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 21:46:34,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:35,122 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 21:46:35,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312698109] [2020-09-24 21:46:35,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:35,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:35,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481269915] [2020-09-24 21:46:35,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:35,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:35,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:35,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:35,126 INFO L87 Difference]: Start difference. First operand 697 states and 863 transitions. Second operand 8 states. [2020-09-24 21:46:38,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:38,924 INFO L93 Difference]: Finished difference Result 1698 states and 2269 transitions. [2020-09-24 21:46:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:46:38,925 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-09-24 21:46:38,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:38,941 INFO L225 Difference]: With dead ends: 1698 [2020-09-24 21:46:38,941 INFO L226 Difference]: Without dead ends: 1166 [2020-09-24 21:46:38,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2020-09-24 21:46:39,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 889. [2020-09-24 21:46:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-24 21:46:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1093 transitions. [2020-09-24 21:46:39,008 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1093 transitions. Word has length 126 [2020-09-24 21:46:39,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:39,010 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1093 transitions. [2020-09-24 21:46:39,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:39,011 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1093 transitions. [2020-09-24 21:46:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-09-24 21:46:39,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:39,025 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:39,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:39,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:39,030 INFO L82 PathProgramCache]: Analyzing trace with hash -169755018, now seen corresponding path program 1 times [2020-09-24 21:46:39,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:39,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105286921] [2020-09-24 21:46:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:39,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:40,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 21:46:44,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:46:44,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 21:46:44,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:44,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:46:44,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:44,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:44,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:46:44,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:44,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:44,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:44,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:44,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 21:46:44,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:44,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:44,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:44,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:44,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:44,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:44,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:44,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 21:46:44,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:46:44,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105286921] [2020-09-24 21:46:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:44,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:44,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423781719] [2020-09-24 21:46:44,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:44,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:44,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:44,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:44,794 INFO L87 Difference]: Start difference. First operand 889 states and 1093 transitions. Second operand 8 states. [2020-09-24 21:46:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:47,380 INFO L93 Difference]: Finished difference Result 1939 states and 2508 transitions. [2020-09-24 21:46:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:46:47,382 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 199 [2020-09-24 21:46:47,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:47,392 INFO L225 Difference]: With dead ends: 1939 [2020-09-24 21:46:47,393 INFO L226 Difference]: Without dead ends: 1229 [2020-09-24 21:46:47,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:46:47,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-09-24 21:46:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1197. [2020-09-24 21:46:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2020-09-24 21:46:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1468 transitions. [2020-09-24 21:46:47,441 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1468 transitions. Word has length 199 [2020-09-24 21:46:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:47,442 INFO L479 AbstractCegarLoop]: Abstraction has 1197 states and 1468 transitions. [2020-09-24 21:46:47,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:47,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1468 transitions. [2020-09-24 21:46:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-24 21:46:47,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:47,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:47,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:47,447 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:47,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1639632703, now seen corresponding path program 1 times [2020-09-24 21:46:47,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:47,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762482785] [2020-09-24 21:46:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:47,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:47,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:49,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:52,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-24 21:46:52,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:46:52,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:46:52,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-24 21:46:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:52,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:52,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:52,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:52,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:52,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:52,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:52,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:52,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:52,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 21:46:52,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:52,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:52,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:52,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:52,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:52,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 21:46:52,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:52,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:52,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 45 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:53,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762482785] [2020-09-24 21:46:53,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:53,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:46:53,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860042829] [2020-09-24 21:46:53,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:46:53,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:53,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:46:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:46:53,140 INFO L87 Difference]: Start difference. First operand 1197 states and 1468 transitions. Second operand 10 states. [2020-09-24 21:46:56,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:56,227 INFO L93 Difference]: Finished difference Result 2326 states and 2984 transitions. [2020-09-24 21:46:56,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:46:56,232 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2020-09-24 21:46:56,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:56,241 INFO L225 Difference]: With dead ends: 2326 [2020-09-24 21:46:56,241 INFO L226 Difference]: Without dead ends: 1628 [2020-09-24 21:46:56,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:46:56,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2020-09-24 21:46:56,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1569. [2020-09-24 21:46:56,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1569 states. [2020-09-24 21:46:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 1909 transitions. [2020-09-24 21:46:56,293 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 1909 transitions. Word has length 205 [2020-09-24 21:46:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:56,294 INFO L479 AbstractCegarLoop]: Abstraction has 1569 states and 1909 transitions. [2020-09-24 21:46:56,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:46:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 1909 transitions. [2020-09-24 21:46:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-24 21:46:56,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:56,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:46:56,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:56,299 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:56,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:56,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2122512193, now seen corresponding path program 1 times [2020-09-24 21:46:56,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:56,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540793945] [2020-09-24 21:46:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:56,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:56,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:00,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-09-24 21:47:00,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:47:00,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4015 [2020-09-24 21:47:00,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:47:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:47:00,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-09-24 21:47:00,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:47:00,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:47:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:00,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:00,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:47:00,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:47:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 21:47:00,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:47:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:00,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:47:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:00,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:47:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:00,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:00,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:00,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:47:00,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:00,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 21:47:00,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:00,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:47:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:47:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:00,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:47:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:47:00,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:47:01,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:47:01,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-24 21:47:01,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:47:01,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-24 21:47:01,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:47:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:47:01,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:47:01,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-24 21:47:01,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:47:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:47:01,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540793945] [2020-09-24 21:47:01,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:47:01,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:47:01,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363823042] [2020-09-24 21:47:01,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:47:01,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:47:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:47:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:47:01,679 INFO L87 Difference]: Start difference. First operand 1569 states and 1909 transitions. Second operand 9 states.