/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:46:16,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:46:16,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:46:16,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:46:16,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:46:16,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:46:16,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:46:16,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:46:16,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:46:16,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:46:16,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:46:16,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:46:16,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:46:16,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:46:16,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:46:16,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:46:16,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:46:16,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:46:16,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:46:16,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:46:16,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:46:16,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:46:16,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:46:16,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:46:16,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:46:16,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:46:16,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:46:16,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:46:16,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:46:16,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:46:16,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:46:16,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:46:16,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:46:16,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:46:16,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:46:16,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:46:16,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:46:16,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:46:16,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:46:16,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:46:16,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:46:16,368 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 [2020-10-12 14:46:16,391 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:46:16,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:46:16,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:46:16,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:46:16,393 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:46:16,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:46:16,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:46:16,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:46:16,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:46:16,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:46:16,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:46:16,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:46:16,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:46:16,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:46:16,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:46:16,395 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:46:16,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:46:16,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:46:16,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:46:16,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:46:16,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:46:16,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:46:16,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:46:16,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:46:16,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:46:16,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:46:16,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:46:16,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:46:16,398 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:46:16,398 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:46:16,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:46:16,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:46:16,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:46:16,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:46:16,756 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:46:16,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36.c [2020-10-12 14:46:16,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6891ea7ea/f598bfb7db98410aa7e723e6aa0a9784/FLAGfc5ba4b95 [2020-10-12 14:46:17,584 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:46:17,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label36.c [2020-10-12 14:46:17,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6891ea7ea/f598bfb7db98410aa7e723e6aa0a9784/FLAGfc5ba4b95 [2020-10-12 14:46:17,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6891ea7ea/f598bfb7db98410aa7e723e6aa0a9784 [2020-10-12 14:46:17,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:46:17,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:46:17,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:46:17,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:46:17,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:46:17,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:46:17" (1/1) ... [2020-10-12 14:46:17,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd7b52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:17, skipping insertion in model container [2020-10-12 14:46:17,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:46:17" (1/1) ... [2020-10-12 14:46:17,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:46:17,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:46:19,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:46:19,213 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:46:19,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:46:19,664 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:46:19,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19 WrapperNode [2020-10-12 14:46:19,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:46:19,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:46:19,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:46:19,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:46:19,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (1/1) ... [2020-10-12 14:46:19,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (1/1) ... [2020-10-12 14:46:19,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (1/1) ... [2020-10-12 14:46:19,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (1/1) ... [2020-10-12 14:46:19,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (1/1) ... [2020-10-12 14:46:19,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (1/1) ... [2020-10-12 14:46:19,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (1/1) ... [2020-10-12 14:46:19,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:46:19,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:46:19,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:46:19,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:46:19,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (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 [2020-10-12 14:46:20,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:46:20,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:46:20,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:46:20,062 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:46:20,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:46:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:46:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:46:20,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:46:20,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:46:20,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:46:20,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:46:20,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:46:20,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:46:27,012 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:46:27,013 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:46:27,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:46:27 BoogieIcfgContainer [2020-10-12 14:46:27,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:46:27,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:46:27,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:46:27,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:46:27,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:46:17" (1/3) ... [2020-10-12 14:46:27,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252dc3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:46:27, skipping insertion in model container [2020-10-12 14:46:27,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:46:19" (2/3) ... [2020-10-12 14:46:27,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252dc3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:46:27, skipping insertion in model container [2020-10-12 14:46:27,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:46:27" (3/3) ... [2020-10-12 14:46:27,036 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label36.c [2020-10-12 14:46:27,050 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:46:27,060 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:46:27,078 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:46:27,115 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:46:27,115 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:46:27,115 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:46:27,115 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:46:27,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:46:27,116 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:46:27,116 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:46:27,116 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:46:27,155 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:46:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 14:46:27,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:46:27,170 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] [2020-10-12 14:46:27,171 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:46:27,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:46:27,179 INFO L82 PathProgramCache]: Analyzing trace with hash 301890441, now seen corresponding path program 1 times [2020-10-12 14:46:27,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:46:27,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162643608] [2020-10-12 14:46:27,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:46:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:46:27,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:28,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:46:28,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 14:46:28,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:46:28,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 588 [2020-10-12 14:46:28,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:46:28,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:46:28,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:46:28,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 14:46:28,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:46:28,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:46:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:46:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:28,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:46:28,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:46:28,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:46:28,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 14:46:28,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:46:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:46:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:46:28,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:46:28,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:46:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:46:28,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162643608] [2020-10-12 14:46:28,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:46:28,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:46:28,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327863009] [2020-10-12 14:46:28,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:46:28,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:46:28,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:46:28,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:46:28,308 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-12 14:46:39,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:46:39,381 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-12 14:46:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:46:39,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-12 14:46:39,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:46:39,408 INFO L225 Difference]: With dead ends: 1692 [2020-10-12 14:46:39,408 INFO L226 Difference]: Without dead ends: 1012 [2020-10-12 14:46:39,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:46:39,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-12 14:46:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-12 14:46:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-12 14:46:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-12 14:46:39,536 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 63 [2020-10-12 14:46:39,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:46:39,537 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-12 14:46:39,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:46:39,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-12 14:46:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 14:46:39,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:46:39,547 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, 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] [2020-10-12 14:46:39,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:46:39,548 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:46:39,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:46:39,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1298338945, now seen corresponding path program 1 times [2020-10-12 14:46:39,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:46:39,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408983524] [2020-10-12 14:46:39,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:46:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:46:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:42,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:42,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:46:42,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-12 14:46:42,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:46:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3181 [2020-10-12 14:46:42,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:46:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:46:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:46:42,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 14:46:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 14:46:42,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:46:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:46:42,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:42,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:46:42,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:46:42,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:46:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 14:46:42,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:46:42,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:46:42,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:46:42,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:46:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:46:42,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:46:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:46:42,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:46:43,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:46:43,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:46:43,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:46:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-12 14:46:43,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:46:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:46:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:46:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:46:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:46:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:46:43,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408983524] [2020-10-12 14:46:43,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:46:43,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:46:43,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432474030] [2020-10-12 14:46:43,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:46:43,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:46:43,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:46:43,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:46:43,442 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 7 states. [2020-10-12 14:47:03,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:47:03,176 INFO L93 Difference]: Finished difference Result 2490 states and 3706 transitions. [2020-10-12 14:47:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:47:03,184 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-12 14:47:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:47:03,193 INFO L225 Difference]: With dead ends: 2490 [2020-10-12 14:47:03,194 INFO L226 Difference]: Without dead ends: 1494 [2020-10-12 14:47:03,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:47:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-10-12 14:47:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1460. [2020-10-12 14:47:03,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-10-12 14:47:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2032 transitions. [2020-10-12 14:47:03,247 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2032 transitions. Word has length 134 [2020-10-12 14:47:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:47:03,247 INFO L479 AbstractCegarLoop]: Abstraction has 1460 states and 2032 transitions. [2020-10-12 14:47:03,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:47:03,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2032 transitions. [2020-10-12 14:47:03,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-12 14:47:03,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:47:03,253 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, 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] [2020-10-12 14:47:03,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:47:03,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:47:03,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:47:03,254 INFO L82 PathProgramCache]: Analyzing trace with hash 826911249, now seen corresponding path program 1 times [2020-10-12 14:47:03,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:47:03,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155204497] [2020-10-12 14:47:03,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:47:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:03,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:06,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:06,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-12 14:47:06,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:47:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3078 [2020-10-12 14:47:06,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 14:47:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-12 14:47:06,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 14:47:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:47:07,104 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-12 14:47:07,353 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-12 14:47:07,504 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2020-10-12 14:47:07,676 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-12 14:47:07,881 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-12 14:47:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:47:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:08,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:08,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:47:08,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:47:08,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:47:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:47:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:47:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:47:08,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:47:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:08,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:08,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:08,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:47:08,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:08,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 14:47:08,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:47:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:47:08,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 14:47:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:47:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:47:08,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155204497] [2020-10-12 14:47:08,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:47:08,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 14:47:08,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920571172] [2020-10-12 14:47:08,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 14:47:08,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:47:08,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 14:47:08,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-12 14:47:08,504 INFO L87 Difference]: Start difference. First operand 1460 states and 2032 transitions. Second operand 20 states. [2020-10-12 14:47:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:47:23,569 INFO L93 Difference]: Finished difference Result 2833 states and 4024 transitions. [2020-10-12 14:47:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 14:47:23,576 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 137 [2020-10-12 14:47:23,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:47:23,586 INFO L225 Difference]: With dead ends: 2833 [2020-10-12 14:47:23,586 INFO L226 Difference]: Without dead ends: 1465 [2020-10-12 14:47:23,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 14:47:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2020-10-12 14:47:23,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1460. [2020-10-12 14:47:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-10-12 14:47:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1903 transitions. [2020-10-12 14:47:23,636 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1903 transitions. Word has length 137 [2020-10-12 14:47:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:47:23,637 INFO L479 AbstractCegarLoop]: Abstraction has 1460 states and 1903 transitions. [2020-10-12 14:47:23,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 14:47:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1903 transitions. [2020-10-12 14:47:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-12 14:47:23,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:47:23,646 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, 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] [2020-10-12 14:47:23,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:47:23,650 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:47:23,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:47:23,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1081457951, now seen corresponding path program 1 times [2020-10-12 14:47:23,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:47:23,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934219595] [2020-10-12 14:47:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:47:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:23,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:24,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:24,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-12 14:47:24,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 326 [2020-10-12 14:47:24,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:47:24,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:47:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 14:47:24,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 14:47:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:47:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:24,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:24,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:24,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:47:24,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:24,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:47:24,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:47:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:47:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:47:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:47:24,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:47:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:24,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:47:24,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:24,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 14:47:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:47:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:47:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:47:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:47:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:47:24,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934219595] [2020-10-12 14:47:24,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:47:24,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:47:24,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503494356] [2020-10-12 14:47:24,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:47:24,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:47:24,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:47:24,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:47:24,288 INFO L87 Difference]: Start difference. First operand 1460 states and 1903 transitions. Second operand 5 states. [2020-10-12 14:47:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:47:33,828 INFO L93 Difference]: Finished difference Result 3388 states and 4673 transitions. [2020-10-12 14:47:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:47:33,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-12 14:47:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:47:33,842 INFO L225 Difference]: With dead ends: 3388 [2020-10-12 14:47:33,842 INFO L226 Difference]: Without dead ends: 2367 [2020-10-12 14:47:33,845 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 [2020-10-12 14:47:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2020-10-12 14:47:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2362. [2020-10-12 14:47:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2020-10-12 14:47:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3194 transitions. [2020-10-12 14:47:33,923 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3194 transitions. Word has length 150 [2020-10-12 14:47:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:47:33,924 INFO L479 AbstractCegarLoop]: Abstraction has 2362 states and 3194 transitions. [2020-10-12 14:47:33,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:47:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3194 transitions. [2020-10-12 14:47:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-12 14:47:33,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:47:33,929 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, 3, 3, 3, 3, 3, 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] [2020-10-12 14:47:33,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:47:33,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:47:33,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:47:33,932 INFO L82 PathProgramCache]: Analyzing trace with hash 670598441, now seen corresponding path program 1 times [2020-10-12 14:47:33,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:47:33,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287574638] [2020-10-12 14:47:33,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:47:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:34,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:34,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:34,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:37,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:37,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-12 14:47:37,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:47:37,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3131 [2020-10-12 14:47:37,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:37,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:47:37,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:47:37,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-12 14:47:37,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:47:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:47:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:37,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:37,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:37,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:47:37,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:47:37,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:47:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:47:37,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:47:37,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:47:37,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:47:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:37,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:37,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:37,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:47:37,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-12 14:47:37,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:47:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:47:37,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:47:37,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:47:37,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:47:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:37,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:37,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:37,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:47:37,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:37,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-12 14:47:37,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:47:37,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:47:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:47:37,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 14:47:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 70 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:47:37,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287574638] [2020-10-12 14:47:37,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:47:37,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:47:37,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699085826] [2020-10-12 14:47:37,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:47:37,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:47:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:47:37,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:47:37,765 INFO L87 Difference]: Start difference. First operand 2362 states and 3194 transitions. Second operand 9 states. [2020-10-12 14:47:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:47:54,581 INFO L93 Difference]: Finished difference Result 7590 states and 11256 transitions. [2020-10-12 14:47:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 14:47:54,583 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 221 [2020-10-12 14:47:54,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:47:54,616 INFO L225 Difference]: With dead ends: 7590 [2020-10-12 14:47:54,616 INFO L226 Difference]: Without dead ends: 5667 [2020-10-12 14:47:54,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-12 14:47:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5667 states. [2020-10-12 14:47:54,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5667 to 5131. [2020-10-12 14:47:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5131 states. [2020-10-12 14:47:54,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 7060 transitions. [2020-10-12 14:47:54,775 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 7060 transitions. Word has length 221 [2020-10-12 14:47:54,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:47:54,776 INFO L479 AbstractCegarLoop]: Abstraction has 5131 states and 7060 transitions. [2020-10-12 14:47:54,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:47:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 7060 transitions. [2020-10-12 14:47:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-12 14:47:54,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:47:54,780 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:47:54,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:47:54,781 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:47:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:47:54,781 INFO L82 PathProgramCache]: Analyzing trace with hash 340898037, now seen corresponding path program 1 times [2020-10-12 14:47:54,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:47:54,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246654566] [2020-10-12 14:47:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:47:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:54,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:55,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:56,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:56,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-12 14:47:56,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:47:56,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2041 [2020-10-12 14:47:56,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:47:56,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:47:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 233 [2020-10-12 14:47:56,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:47:57,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:47:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:57,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:47:57,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:47:57,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:47:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:47:57,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:47:57,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:47:57,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:47:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:57,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:57,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:57,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:47:57,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:57,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-12 14:47:57,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:47:57,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:47:57,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:47:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:47:57,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:47:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:47:57,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:47:57,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:47:57,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:47:57,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:47:57,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-12 14:47:57,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:47:57,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:47:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:47:57,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:47:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:47:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 14:47:58,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246654566] [2020-10-12 14:47:58,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:47:58,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:47:58,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119612645] [2020-10-12 14:47:58,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:47:58,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:47:58,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:47:58,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:47:58,010 INFO L87 Difference]: Start difference. First operand 5131 states and 7060 transitions. Second operand 9 states. [2020-10-12 14:48:18,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:48:18,411 INFO L93 Difference]: Finished difference Result 11609 states and 17533 transitions. [2020-10-12 14:48:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 14:48:18,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 227 [2020-10-12 14:48:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:48:18,452 INFO L225 Difference]: With dead ends: 11609 [2020-10-12 14:48:18,453 INFO L226 Difference]: Without dead ends: 6917 [2020-10-12 14:48:18,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-12 14:48:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6917 states. [2020-10-12 14:48:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6917 to 6194. [2020-10-12 14:48:18,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6194 states. [2020-10-12 14:48:18,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 8524 transitions. [2020-10-12 14:48:18,690 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 8524 transitions. Word has length 227 [2020-10-12 14:48:18,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:48:18,691 INFO L479 AbstractCegarLoop]: Abstraction has 6194 states and 8524 transitions. [2020-10-12 14:48:18,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:48:18,691 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 8524 transitions. [2020-10-12 14:48:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 14:48:18,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:48:18,700 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:48:18,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:48:18,700 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:48:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:48:18,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1155715611, now seen corresponding path program 1 times [2020-10-12 14:48:18,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:48:18,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484247912] [2020-10-12 14:48:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:48:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:18,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:23,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:23,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-12 14:48:23,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:48:23,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 14:48:23,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:48:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:48:23,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-12 14:48:23,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:23,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:48:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:23,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:23,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:48:23,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:48:23,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:48:23,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:23,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:48:23,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:48:23,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:48:23,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:23,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:48:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:24,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:24,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:48:24,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:48:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 14:48:24,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:48:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:48:24,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:48:24,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:48:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:24,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:24,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:24,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 14:48:24,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:48:24,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-12 14:48:24,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:48:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:48:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-12 14:48:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:24,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-12 14:48:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:24,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:24,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:24,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:48:24,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:48:24,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:48:24,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:24,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:48:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 14:48:24,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:48:24,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:48:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 246 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 14:48:24,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484247912] [2020-10-12 14:48:24,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:48:24,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:48:24,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303466522] [2020-10-12 14:48:24,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:48:24,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:48:24,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:48:24,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:48:24,495 INFO L87 Difference]: Start difference. First operand 6194 states and 8524 transitions. Second operand 7 states. [2020-10-12 14:48:36,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:48:36,131 INFO L93 Difference]: Finished difference Result 15295 states and 22115 transitions. [2020-10-12 14:48:36,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:48:36,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-12 14:48:36,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:48:36,191 INFO L225 Difference]: With dead ends: 15295 [2020-10-12 14:48:36,191 INFO L226 Difference]: Without dead ends: 9552 [2020-10-12 14:48:36,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:48:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9552 states. [2020-10-12 14:48:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9552 to 9450. [2020-10-12 14:48:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9450 states. [2020-10-12 14:48:36,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9450 states to 9450 states and 12134 transitions. [2020-10-12 14:48:36,471 INFO L78 Accepts]: Start accepts. Automaton has 9450 states and 12134 transitions. Word has length 302 [2020-10-12 14:48:36,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:48:36,472 INFO L479 AbstractCegarLoop]: Abstraction has 9450 states and 12134 transitions. [2020-10-12 14:48:36,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:48:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 9450 states and 12134 transitions. [2020-10-12 14:48:36,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-12 14:48:36,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:48:36,482 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:48:36,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:48:36,482 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:48:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:48:36,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1109785040, now seen corresponding path program 1 times [2020-10-12 14:48:36,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:48:36,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295126516] [2020-10-12 14:48:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:48:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:37,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:41,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:41,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-12 14:48:41,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:48:41,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 14:48:41,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:41,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:48:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 279 [2020-10-12 14:48:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 14:48:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:41,871 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2020-10-12 14:48:42,102 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-10-12 14:48:42,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:48:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:42,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:42,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:48:42,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:48:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:48:42,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:48:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:48:42,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:48:42,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:48:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:42,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:42,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:42,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:48:42,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:48:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 14:48:42,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:48:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:48:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:48:42,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:48:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:42,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:42,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 14:48:42,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:48:42,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 14:48:42,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:48:42,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:48:42,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:48:42,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-12 14:48:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:42,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:42,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:48:42,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:48:42,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:48:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 14:48:42,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:48:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:48:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:48:42,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 14:48:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:48:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 171 proven. 3 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2020-10-12 14:48:42,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295126516] [2020-10-12 14:48:42,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:48:42,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:48:42,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740506954] [2020-10-12 14:48:42,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:48:42,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:48:42,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:48:42,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:48:42,658 INFO L87 Difference]: Start difference. First operand 9450 states and 12134 transitions. Second operand 8 states. [2020-10-12 14:48:45,330 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-12 14:48:45,548 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 14:48:46,015 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-12 14:48:58,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:48:58,772 INFO L93 Difference]: Finished difference Result 18595 states and 24040 transitions. [2020-10-12 14:48:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:48:58,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 328 [2020-10-12 14:48:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:48:58,877 INFO L225 Difference]: With dead ends: 18595 [2020-10-12 14:48:58,877 INFO L226 Difference]: Without dead ends: 9470 [2020-10-12 14:48:58,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:48:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9470 states. [2020-10-12 14:48:59,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9470 to 9446. [2020-10-12 14:48:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9446 states. [2020-10-12 14:48:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9446 states to 9446 states and 12084 transitions. [2020-10-12 14:48:59,106 INFO L78 Accepts]: Start accepts. Automaton has 9446 states and 12084 transitions. Word has length 328 [2020-10-12 14:48:59,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:48:59,107 INFO L479 AbstractCegarLoop]: Abstraction has 9446 states and 12084 transitions. [2020-10-12 14:48:59,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:48:59,107 INFO L276 IsEmpty]: Start isEmpty. Operand 9446 states and 12084 transitions. [2020-10-12 14:48:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-12 14:48:59,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:48:59,114 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:48:59,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:48:59,115 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:48:59,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:48:59,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1884192552, now seen corresponding path program 1 times [2020-10-12 14:48:59,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:48:59,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328346334] [2020-10-12 14:48:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:48:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:48:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:59,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:48:59,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:04,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:04,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-12 14:49:04,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:49:04,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 14:49:04,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:49:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:49:04,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 14:49:04,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:49:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:04,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:04,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:49:04,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:49:04,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:49:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:04,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:49:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:04,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:49:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:04,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:04,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:04,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:49:04,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 14:49:04,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:49:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:49:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:04,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:49:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:04,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:04,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 14:49:04,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:04,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 14:49:04,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:04,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:49:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:49:04,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 14:49:04,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:04,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-12 14:49:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:04,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:04,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:49:04,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 14:49:04,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:49:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 14:49:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:49:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 256 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 14:49:04,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328346334] [2020-10-12 14:49:04,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:49:04,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:49:04,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206760210] [2020-10-12 14:49:04,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:49:04,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:49:04,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:49:04,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:49:04,773 INFO L87 Difference]: Start difference. First operand 9446 states and 12084 transitions. Second operand 7 states. [2020-10-12 14:49:26,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:49:26,491 INFO L93 Difference]: Finished difference Result 22899 states and 30606 transitions. [2020-10-12 14:49:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:49:26,493 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-12 14:49:26,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:49:26,540 INFO L225 Difference]: With dead ends: 22899 [2020-10-12 14:49:26,540 INFO L226 Difference]: Without dead ends: 13904 [2020-10-12 14:49:26,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:49:26,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13904 states. [2020-10-12 14:49:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13904 to 13704. [2020-10-12 14:49:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13704 states. [2020-10-12 14:49:26,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13704 states to 13704 states and 17359 transitions. [2020-10-12 14:49:26,902 INFO L78 Accepts]: Start accepts. Automaton has 13704 states and 17359 transitions. Word has length 332 [2020-10-12 14:49:26,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:49:26,903 INFO L479 AbstractCegarLoop]: Abstraction has 13704 states and 17359 transitions. [2020-10-12 14:49:26,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:49:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 13704 states and 17359 transitions. [2020-10-12 14:49:26,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-12 14:49:26,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:49:26,912 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:49:26,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:49:26,912 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:49:26,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:49:26,912 INFO L82 PathProgramCache]: Analyzing trace with hash -959982540, now seen corresponding path program 1 times [2020-10-12 14:49:26,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:49:26,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759747853] [2020-10-12 14:49:26,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:49:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:27,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:27,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:29,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:31,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:31,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-10-12 14:49:31,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:49:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 14:49:31,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:49:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 285 [2020-10-12 14:49:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 14:49:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:32,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:49:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:32,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:32,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:32,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:49:32,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:32,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:49:32,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:32,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:49:32,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:32,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:49:32,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:49:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:32,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:32,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:32,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:49:32,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:32,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:49:32,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:49:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:32,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:49:32,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:49:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:32,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:32,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:32,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:49:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 14:49:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:49:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:49:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:49:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:32,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:32,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:49:32,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 14:49:32,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:49:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 14:49:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 171 proven. 3 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-10-12 14:49:32,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759747853] [2020-10-12 14:49:32,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:49:32,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:49:32,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149445767] [2020-10-12 14:49:32,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:49:32,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:49:32,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:49:32,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:49:32,539 INFO L87 Difference]: Start difference. First operand 13704 states and 17359 transitions. Second operand 5 states. [2020-10-12 14:49:47,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:49:47,365 INFO L93 Difference]: Finished difference Result 27015 states and 34475 transitions. [2020-10-12 14:49:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:49:47,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-12 14:49:47,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:49:47,418 INFO L225 Difference]: With dead ends: 27015 [2020-10-12 14:49:47,418 INFO L226 Difference]: Without dead ends: 13732 [2020-10-12 14:49:47,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:49:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13732 states. [2020-10-12 14:49:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13732 to 13704. [2020-10-12 14:49:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13704 states. [2020-10-12 14:49:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13704 states to 13704 states and 17345 transitions. [2020-10-12 14:49:47,790 INFO L78 Accepts]: Start accepts. Automaton has 13704 states and 17345 transitions. Word has length 334 [2020-10-12 14:49:47,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:49:47,791 INFO L479 AbstractCegarLoop]: Abstraction has 13704 states and 17345 transitions. [2020-10-12 14:49:47,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:49:47,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13704 states and 17345 transitions. [2020-10-12 14:49:47,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-12 14:49:47,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:49:47,805 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:49:47,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:49:47,805 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:49:47,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:49:47,806 INFO L82 PathProgramCache]: Analyzing trace with hash 654810952, now seen corresponding path program 1 times [2020-10-12 14:49:47,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:49:47,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859888569] [2020-10-12 14:49:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:49:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:52,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:52,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-12 14:49:52,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:49:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 14:49:52,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 14:49:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 286 [2020-10-12 14:49:52,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-12 14:49:52,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:53,148 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-10-12 14:49:53,306 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2020-10-12 14:49:53,522 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-12 14:49:53,709 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2020-10-12 14:49:53,889 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-10-12 14:49:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:49:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:54,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:54,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:54,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:49:54,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:54,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:49:54,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:54,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:49:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:54,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:49:54,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:49:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:54,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:54,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:54,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:49:54,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:49:54,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:49:54,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:49:54,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:49:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:54,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:54,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 14:49:54,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:54,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 14:49:54,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:54,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:49:54,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:54,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:49:54,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:54,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-12 14:49:54,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:49:54,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:49:54,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:49:54,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 14:49:54,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:49:54,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 14:49:54,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:49:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:49:54,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:49:54,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 14:49:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:49:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 171 proven. 3 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-12 14:49:54,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859888569] [2020-10-12 14:49:54,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:49:54,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 14:49:54,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874502377] [2020-10-12 14:49:54,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 14:49:54,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:49:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 14:49:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:49:54,435 INFO L87 Difference]: Start difference. First operand 13704 states and 17345 transitions. Second operand 11 states. [2020-10-12 14:50:03,015 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-12 14:50:03,502 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-12 14:50:04,547 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-12 14:50:04,971 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-10-12 14:50:05,496 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-12 14:50:05,691 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48