/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=SMALLEST --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/Problem02_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:21:14,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:21:14,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:21:14,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:21:14,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:21:14,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:21:14,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:21:14,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:21:14,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:21:14,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:21:14,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:21:14,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:21:14,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:21:14,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:21:14,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:21:14,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:21:14,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:21:14,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:21:14,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:21:14,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:21:14,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:21:14,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:21:14,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:21:14,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:21:14,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:21:14,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:21:14,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:21:14,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:21:14,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:21:14,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:21:14,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:21:14,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:21:14,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:21:14,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:21:14,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:21:14,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:21:14,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:21:14,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:21:14,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:21:14,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:21:14,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:21:14,465 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 18:21:14,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:21:14,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:21:14,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:21:14,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:21:14,516 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:21:14,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:21:14,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:21:14,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:21:14,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:21:14,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:21:14,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:21:14,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:21:14,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:21:14,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:21:14,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:21:14,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:21:14,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:21:14,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:21:14,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:21:14,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:21:14,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:21:14,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:21:14,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:21:14,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:21:14,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:21:14,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:21:14,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:21:14,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:21:14,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:21:14,522 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:21:14,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:21:14,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:21:14,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:21:14,980 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:21:14,981 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:21:14,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-24 18:21:15,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e6c2af6f/f64a069877274368bc87b4ed2c584b56/FLAG95e021867 [2020-09-24 18:21:15,705 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:21:15,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-24 18:21:15,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e6c2af6f/f64a069877274368bc87b4ed2c584b56/FLAG95e021867 [2020-09-24 18:21:15,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e6c2af6f/f64a069877274368bc87b4ed2c584b56 [2020-09-24 18:21:15,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:21:15,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:21:15,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:15,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:21:15,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:21:15,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:15" (1/1) ... [2020-09-24 18:21:15,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:15, skipping insertion in model container [2020-09-24 18:21:15,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:21:15" (1/1) ... [2020-09-24 18:21:15,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:21:16,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:21:16,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:16,472 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:21:16,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:21:16,753 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:21:16,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16 WrapperNode [2020-09-24 18:21:16,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:21:16,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:21:16,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:21:16,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:21:16,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (1/1) ... [2020-09-24 18:21:16,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:21:16,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:21:16,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:21:16,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:21:16,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (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 18:21:16,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:21:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:21:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:21:16,959 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:21:16,959 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:21:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:21:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:21:16,960 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:21:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:21:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:21:16,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:21:18,271 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:21:18,272 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:21:18,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:18 BoogieIcfgContainer [2020-09-24 18:21:18,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:21:18,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:21:18,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:21:18,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:21:18,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:21:15" (1/3) ... [2020-09-24 18:21:18,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:18, skipping insertion in model container [2020-09-24 18:21:18,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:21:16" (2/3) ... [2020-09-24 18:21:18,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:21:18, skipping insertion in model container [2020-09-24 18:21:18,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:21:18" (3/3) ... [2020-09-24 18:21:18,291 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-24 18:21:18,303 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:21:18,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:21:18,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:21:18,370 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:21:18,370 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:21:18,371 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:21:18,371 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:21:18,371 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:21:18,371 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:21:18,371 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:21:18,371 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:21:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:21:18,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 18:21:18,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:18,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:18,430 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1976766121, now seen corresponding path program 1 times [2020-09-24 18:21:18,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:18,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-24 18:21:18,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:18,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:21,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 18:21:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:21:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 18:21:23,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:21:23,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-24 18:21:23,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 18:21:23,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:23,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:23,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:23,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:21:23,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:21:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:24,022 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 18:21:24,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-24 18:21:24,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:24,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:24,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390681868] [2020-09-24 18:21:24,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:24,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:24,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:24,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:24,055 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:21:26,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:26,043 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-24 18:21:26,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:26,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-24 18:21:26,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:26,095 INFO L225 Difference]: With dead ends: 1386 [2020-09-24 18:21:26,096 INFO L226 Difference]: Without dead ends: 787 [2020-09-24 18:21:26,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:26,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-24 18:21:26,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-24 18:21:26,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-24 18:21:26,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-24 18:21:26,232 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 152 [2020-09-24 18:21:26,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:26,233 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-24 18:21:26,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:26,234 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-24 18:21:26,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-24 18:21:26,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:26,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:26,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:26,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:26,245 INFO L82 PathProgramCache]: Analyzing trace with hash 676695293, now seen corresponding path program 1 times [2020-09-24 18:21:26,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:26,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419148133] [2020-09-24 18:21:26,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:26,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:31,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 18:21:31,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:21:31,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 18:21:31,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 18:21:31,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-09-24 18:21:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:31,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:31,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:31,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:31,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:31,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:31,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:31,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:31,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:31,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:31,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:21:31,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:31,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:31,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:31,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:21:31,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:31,568 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:31,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419148133] [2020-09-24 18:21:31,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:31,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:31,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849680335] [2020-09-24 18:21:31,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:31,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:31,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:31,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:31,573 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-24 18:21:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:33,720 INFO L93 Difference]: Finished difference Result 1806 states and 2276 transitions. [2020-09-24 18:21:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:33,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-09-24 18:21:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:33,729 INFO L225 Difference]: With dead ends: 1806 [2020-09-24 18:21:33,729 INFO L226 Difference]: Without dead ends: 1095 [2020-09-24 18:21:33,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2020-09-24 18:21:33,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1039. [2020-09-24 18:21:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-09-24 18:21:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1246 transitions. [2020-09-24 18:21:33,776 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1246 transitions. Word has length 170 [2020-09-24 18:21:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:33,777 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1246 transitions. [2020-09-24 18:21:33,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1246 transitions. [2020-09-24 18:21:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 18:21:33,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:33,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:33,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:33,783 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash -186709720, now seen corresponding path program 1 times [2020-09-24 18:21:33,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:33,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883373030] [2020-09-24 18:21:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:33,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:33,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:34,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:37,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:38,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 18:21:38,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:21:38,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:21:38,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:38,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 18:21:38,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 18:21:38,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:38,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:38,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:38,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:38,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:21:38,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:38,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:38,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:39,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:39,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:21:39,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:39,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:21:39,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:21:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:39,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883373030] [2020-09-24 18:21:39,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:39,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:39,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108228204] [2020-09-24 18:21:39,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:39,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:39,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:39,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:39,110 INFO L87 Difference]: Start difference. First operand 1039 states and 1246 transitions. Second operand 5 states. [2020-09-24 18:21:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:41,219 INFO L93 Difference]: Finished difference Result 2908 states and 3578 transitions. [2020-09-24 18:21:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:41,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-24 18:21:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:41,234 INFO L225 Difference]: With dead ends: 2908 [2020-09-24 18:21:41,234 INFO L226 Difference]: Without dead ends: 1891 [2020-09-24 18:21:41,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:41,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-09-24 18:21:41,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1721. [2020-09-24 18:21:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1721 states. [2020-09-24 18:21:41,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2113 transitions. [2020-09-24 18:21:41,297 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2113 transitions. Word has length 176 [2020-09-24 18:21:41,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:41,297 INFO L479 AbstractCegarLoop]: Abstraction has 1721 states and 2113 transitions. [2020-09-24 18:21:41,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:41,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2113 transitions. [2020-09-24 18:21:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-24 18:21:41,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:41,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:41,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:41,306 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1421639133, now seen corresponding path program 1 times [2020-09-24 18:21:41,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:41,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682140460] [2020-09-24 18:21:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:41,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:43,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:44,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:46,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-24 18:21:46,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:46,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 18:21:46,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:46,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:21:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:21:46,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:46,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:46,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:46,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:46,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:21:46,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:21:46,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:46,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:46,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:46,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 18:21:46,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:46,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:21:46,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:21:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:46,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682140460] [2020-09-24 18:21:46,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:46,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:21:46,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070429864] [2020-09-24 18:21:46,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:46,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:46,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:46,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:46,681 INFO L87 Difference]: Start difference. First operand 1721 states and 2113 transitions. Second operand 7 states. [2020-09-24 18:21:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:48,831 INFO L93 Difference]: Finished difference Result 4772 states and 6254 transitions. [2020-09-24 18:21:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:21:48,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-09-24 18:21:48,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:48,855 INFO L225 Difference]: With dead ends: 4772 [2020-09-24 18:21:48,855 INFO L226 Difference]: Without dead ends: 3073 [2020-09-24 18:21:48,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:21:48,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3073 states. [2020-09-24 18:21:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3073 to 2965. [2020-09-24 18:21:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2965 states. [2020-09-24 18:21:48,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2965 states to 2965 states and 3703 transitions. [2020-09-24 18:21:48,976 INFO L78 Accepts]: Start accepts. Automaton has 2965 states and 3703 transitions. Word has length 187 [2020-09-24 18:21:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:48,977 INFO L479 AbstractCegarLoop]: Abstraction has 2965 states and 3703 transitions. [2020-09-24 18:21:48,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:48,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2965 states and 3703 transitions. [2020-09-24 18:21:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 18:21:48,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:48,989 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:48,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:48,989 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:48,990 INFO L82 PathProgramCache]: Analyzing trace with hash 715564810, now seen corresponding path program 1 times [2020-09-24 18:21:48,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:48,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915269161] [2020-09-24 18:21:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:49,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:50,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:54,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 18:21:54,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:21:54,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 18:21:54,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:21:54,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:21:54,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:54,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:54,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:21:54,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:21:54,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:54,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:21:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:54,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:54,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:21:54,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:54,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:54,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:54,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:54,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:21:54,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:54,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:21:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:54,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:54,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:21:54,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:21:54,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:54,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:54,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:21:54,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:54,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915269161] [2020-09-24 18:21:54,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:54,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:54,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404508548] [2020-09-24 18:21:54,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:54,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:54,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:54,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:54,270 INFO L87 Difference]: Start difference. First operand 2965 states and 3703 transitions. Second operand 7 states. [2020-09-24 18:21:56,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:56,341 INFO L93 Difference]: Finished difference Result 7004 states and 8912 transitions. [2020-09-24 18:21:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:21:56,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-24 18:21:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:56,368 INFO L225 Difference]: With dead ends: 7004 [2020-09-24 18:21:56,368 INFO L226 Difference]: Without dead ends: 4061 [2020-09-24 18:21:56,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:21:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2020-09-24 18:21:56,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3884. [2020-09-24 18:21:56,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3884 states. [2020-09-24 18:21:56,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 4856 transitions. [2020-09-24 18:21:56,501 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 4856 transitions. Word has length 189 [2020-09-24 18:21:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:56,501 INFO L479 AbstractCegarLoop]: Abstraction has 3884 states and 4856 transitions. [2020-09-24 18:21:56,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 4856 transitions. [2020-09-24 18:21:56,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 18:21:56,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:56,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:56,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:56,517 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:56,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:56,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1683465461, now seen corresponding path program 1 times [2020-09-24 18:21:56,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:56,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698878537] [2020-09-24 18:21:56,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:56,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:00,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 18:22:01,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:22:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 18:22:01,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:22:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 18:22:01,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:01,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:01,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:22:01,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:01,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:22:01,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:01,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:01,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 18:22:01,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-24 18:22:01,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:22:01,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:01,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698878537] [2020-09-24 18:22:01,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:01,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:22:01,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369886089] [2020-09-24 18:22:01,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:22:01,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:01,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:22:01,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:22:01,842 INFO L87 Difference]: Start difference. First operand 3884 states and 4856 transitions. Second operand 8 states. [2020-09-24 18:22:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:04,479 INFO L93 Difference]: Finished difference Result 9809 states and 12658 transitions. [2020-09-24 18:22:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 18:22:04,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2020-09-24 18:22:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:04,480 INFO L225 Difference]: With dead ends: 9809 [2020-09-24 18:22:04,480 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:22:04,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:22:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:22:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:22:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:22:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:22:04,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 198 [2020-09-24 18:22:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:04,506 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:22:04,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:22:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:22:04,507 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:22:04,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:22:04,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.