/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:22,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:22,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:22,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:22,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:22,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:22,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:22,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:22,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:22,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:22,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:22,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:22,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:22,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:22,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:22,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:22,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:22,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:22,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:22,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:22,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:22,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:22,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:22,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:22,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:22,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:22,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:22,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:22,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:22,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:22,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:22,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:22,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:22,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:22,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:22,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:22,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:22,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:22,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:22,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:22,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:22,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:11:22,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:22,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:22,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:22,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:22,473 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:22,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:22,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:22,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:22,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:22,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:22,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:22,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:22,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:22,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:22,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:22,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:22,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:22,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:22,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:22,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:22,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:22,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:22,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:22,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:22,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:22,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:22,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:22,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:22,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:22,478 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:11:22,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:23,000 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:23,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:23,006 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:23,007 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:23,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 10:11:23,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01506d28f/969ac3324cd04c14860e09601830de6f/FLAG4be5ed1c0 [2020-09-25 10:11:23,671 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:23,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 10:11:23,685 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01506d28f/969ac3324cd04c14860e09601830de6f/FLAG4be5ed1c0 [2020-09-25 10:11:23,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/01506d28f/969ac3324cd04c14860e09601830de6f [2020-09-25 10:11:23,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:23,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:23,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:23,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:23,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:23,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:23" (1/1) ... [2020-09-25 10:11:23,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18215cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:23, skipping insertion in model container [2020-09-25 10:11:23,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:23" (1/1) ... [2020-09-25 10:11:23,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:24,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:24,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:24,603 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:24,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:24,714 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:24,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24 WrapperNode [2020-09-25 10:11:24,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:24,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:24,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:24,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:24,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... [2020-09-25 10:11:24,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:24,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:24,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:24,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:24,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:24,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:24,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:24,955 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:24,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:24,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:26,373 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:26,374 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:26,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:26 BoogieIcfgContainer [2020-09-25 10:11:26,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:26,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:26,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:26,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:26,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:23" (1/3) ... [2020-09-25 10:11:26,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb2a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:26, skipping insertion in model container [2020-09-25 10:11:26,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:24" (2/3) ... [2020-09-25 10:11:26,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fb2a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:26, skipping insertion in model container [2020-09-25 10:11:26,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:26" (3/3) ... [2020-09-25 10:11:26,394 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 10:11:26,406 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:26,417 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:26,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:26,473 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:26,473 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:26,474 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:26,474 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:26,474 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:26,474 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:26,474 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:26,474 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:26,505 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:11:26,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:26,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:26,518 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 10:11:26,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:26,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631807811] [2020-09-25 10:11:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:26,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:27,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:11:27,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:11:27,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-09-25 10:11:27,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:27,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:27,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:11:27,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 10:11:27,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:27,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:27,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:27,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 10:11:27,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:27,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:27,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:11:27,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:27,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631807811] [2020-09-25 10:11:27,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:27,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:27,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025239596] [2020-09-25 10:11:27,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:27,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:27,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:27,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:27,770 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:29,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:29,691 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 10:11:29,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:29,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 10:11:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:29,727 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 10:11:29,727 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 10:11:29,738 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 [2020-09-25 10:11:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 10:11:29,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 10:11:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 10:11:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 10:11:29,835 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 67 [2020-09-25 10:11:29,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:29,835 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 10:11:29,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 10:11:29,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 10:11:29,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:29,846 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, 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] [2020-09-25 10:11:29,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:29,846 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:29,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:29,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 10:11:29,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:29,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142289309] [2020-09-25 10:11:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:29,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:34,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:34,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 10:11:34,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:34,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:11:34,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:34,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:34,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:34,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 10:11:34,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:35,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:35,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:35,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:11:35,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:35,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:35,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:35,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:35,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:35,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:35,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 10:11:35,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:35,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:35,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:35,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:35,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:35,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142289309] [2020-09-25 10:11:35,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:35,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:11:35,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542952199] [2020-09-25 10:11:35,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:11:35,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:11:35,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:11:35,416 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 6 states. [2020-09-25 10:11:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:37,342 INFO L93 Difference]: Finished difference Result 1415 states and 1745 transitions. [2020-09-25 10:11:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:11:37,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 10:11:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:37,351 INFO L225 Difference]: With dead ends: 1415 [2020-09-25 10:11:37,351 INFO L226 Difference]: Without dead ends: 885 [2020-09-25 10:11:37,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-09-25 10:11:37,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 853. [2020-09-25 10:11:37,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-09-25 10:11:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1023 transitions. [2020-09-25 10:11:37,410 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1023 transitions. Word has length 146 [2020-09-25 10:11:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:37,412 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1023 transitions. [2020-09-25 10:11:37,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:11:37,412 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1023 transitions. [2020-09-25 10:11:37,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 10:11:37,441 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:37,441 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, 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] [2020-09-25 10:11:37,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:37,442 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:37,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:37,442 INFO L82 PathProgramCache]: Analyzing trace with hash 196926794, now seen corresponding path program 1 times [2020-09-25 10:11:37,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:37,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945871660] [2020-09-25 10:11:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:37,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:37,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:41,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 10:11:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3541 [2020-09-25 10:11:41,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:41,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:11:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 10:11:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:41,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:41,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:41,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:41,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:41,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:11:41,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:41,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:41,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:41,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:41,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:41,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:41,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:41,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 10:11:41,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:41,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:11:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:41,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:41,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:41,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945871660] [2020-09-25 10:11:41,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:41,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:11:41,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805020394] [2020-09-25 10:11:41,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:11:41,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:41,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:11:41,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:41,519 INFO L87 Difference]: Start difference. First operand 853 states and 1023 transitions. Second operand 12 states. [2020-09-25 10:11:45,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:45,681 INFO L93 Difference]: Finished difference Result 3131 states and 3973 transitions. [2020-09-25 10:11:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:11:45,682 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 10:11:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:45,705 INFO L225 Difference]: With dead ends: 3131 [2020-09-25 10:11:45,705 INFO L226 Difference]: Without dead ends: 2250 [2020-09-25 10:11:45,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:11:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2020-09-25 10:11:45,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1715. [2020-09-25 10:11:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-09-25 10:11:45,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2146 transitions. [2020-09-25 10:11:45,832 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2146 transitions. Word has length 156 [2020-09-25 10:11:45,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:45,832 INFO L479 AbstractCegarLoop]: Abstraction has 1715 states and 2146 transitions. [2020-09-25 10:11:45,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:11:45,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2146 transitions. [2020-09-25 10:11:45,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 10:11:45,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:45,841 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:45,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:45,842 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:45,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:45,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1077403518, now seen corresponding path program 1 times [2020-09-25 10:11:45,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:45,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725320180] [2020-09-25 10:11:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:47,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 10:11:50,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:50,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4251 [2020-09-25 10:11:50,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:11:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:50,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-09-25 10:11:50,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:50,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:11:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:50,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 10:11:50,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:50,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:11:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:11:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 10:11:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:50,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:50,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:50,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:11:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 106 proven. 61 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:11:50,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725320180] [2020-09-25 10:11:50,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:50,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:11:50,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870266814] [2020-09-25 10:11:50,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:11:50,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:50,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:11:50,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:11:50,949 INFO L87 Difference]: Start difference. First operand 1715 states and 2146 transitions. Second operand 9 states. [2020-09-25 10:11:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:53,175 INFO L93 Difference]: Finished difference Result 4301 states and 5649 transitions. [2020-09-25 10:11:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:11:53,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2020-09-25 10:11:53,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:53,197 INFO L225 Difference]: With dead ends: 4301 [2020-09-25 10:11:53,197 INFO L226 Difference]: Without dead ends: 2601 [2020-09-25 10:11:53,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:11:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2020-09-25 10:11:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2325. [2020-09-25 10:11:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2325 states. [2020-09-25 10:11:53,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 2900 transitions. [2020-09-25 10:11:53,298 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 2900 transitions. Word has length 226 [2020-09-25 10:11:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:53,300 INFO L479 AbstractCegarLoop]: Abstraction has 2325 states and 2900 transitions. [2020-09-25 10:11:53,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:11:53,300 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 2900 transitions. [2020-09-25 10:11:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-25 10:11:53,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:53,306 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:11:53,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:53,307 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:53,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:53,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1071907513, now seen corresponding path program 1 times [2020-09-25 10:11:53,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:53,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746347556] [2020-09-25 10:11:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:55,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:58,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-09-25 10:11:58,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:58,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 10:11:58,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:58,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:11:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:58,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-09-25 10:11:58,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:58,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:58,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:58,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:58,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:11:58,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:58,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:58,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:58,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:58,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:58,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:58,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 10:11:58,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:58,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:59,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:11:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:59,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:59,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:59,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:59,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 10:11:59,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:59,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:59,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:59,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:11:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 98 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:11:59,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746347556] [2020-09-25 10:11:59,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:59,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:11:59,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786820836] [2020-09-25 10:11:59,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:11:59,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:59,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:11:59,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:11:59,620 INFO L87 Difference]: Start difference. First operand 2325 states and 2900 transitions. Second operand 15 states. [2020-09-25 10:12:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:12:05,608 INFO L93 Difference]: Finished difference Result 8065 states and 10892 transitions. [2020-09-25 10:12:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:12:05,609 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 235 [2020-09-25 10:12:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:12:05,641 INFO L225 Difference]: With dead ends: 8065 [2020-09-25 10:12:05,641 INFO L226 Difference]: Without dead ends: 5866 [2020-09-25 10:12:05,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-09-25 10:12:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2020-09-25 10:12:05,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5236. [2020-09-25 10:12:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5236 states. [2020-09-25 10:12:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 6641 transitions. [2020-09-25 10:12:05,801 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 6641 transitions. Word has length 235 [2020-09-25 10:12:05,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:12:05,802 INFO L479 AbstractCegarLoop]: Abstraction has 5236 states and 6641 transitions. [2020-09-25 10:12:05,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:12:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 6641 transitions. [2020-09-25 10:12:05,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-25 10:12:05,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:12:05,808 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:12:05,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:12:05,809 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:12:05,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:12:05,809 INFO L82 PathProgramCache]: Analyzing trace with hash 890387463, now seen corresponding path program 1 times [2020-09-25 10:12:05,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:12:05,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560504934] [2020-09-25 10:12:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:12:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:05,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:06,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:12:10,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:12:10,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-09-25 10:12:10,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:12:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-09-25 10:12:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:12:10,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:12:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:12:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:12:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-09-25 10:12:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:12:11,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:12:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:12:11,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking...