/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:05:29,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:05:29,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:05:29,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:05:29,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:05:29,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:05:29,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:05:29,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:05:29,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:05:29,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:05:29,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:05:29,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:05:29,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:05:29,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:05:29,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:05:29,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:05:29,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:05:29,440 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:05:29,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:05:29,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:05:29,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:05:29,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:05:29,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:05:29,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:05:29,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:05:29,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:05:29,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:05:29,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:05:29,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:05:29,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:05:29,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:05:29,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:05:29,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:05:29,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:05:29,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:05:29,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:05:29,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:05:29,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:05:29,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:05:29,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:05:29,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:05:29,480 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 [2020-10-14 04:05:29,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:05:29,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:05:29,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:05:29,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:05:29,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:05:29,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:05:29,506 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:05:29,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:05:29,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:05:29,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:05:29,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:05:29,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:05:29,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:05:29,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:05:29,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:05:29,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:05:29,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:05:29,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:05:29,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:05:29,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:05:29,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:05:29,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:05:29,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:05:29,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:05:29,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:05:29,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:05:29,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:05:29,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:05:29,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:05:29,511 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:05:29,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:05:29,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:05:29,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:05:29,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:05:29,853 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:05:29,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42.c [2020-10-14 04:05:29,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1058c501/112b76ce42c240cbbe580aa19611847b/FLAGa67aedb99 [2020-10-14 04:05:30,704 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:05:30,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label42.c [2020-10-14 04:05:30,730 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1058c501/112b76ce42c240cbbe580aa19611847b/FLAGa67aedb99 [2020-10-14 04:05:30,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1058c501/112b76ce42c240cbbe580aa19611847b [2020-10-14 04:05:30,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:05:30,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:05:30,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:05:30,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:05:30,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:05:30,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:05:30" (1/1) ... [2020-10-14 04:05:30,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ea52f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:30, skipping insertion in model container [2020-10-14 04:05:30,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:05:30" (1/1) ... [2020-10-14 04:05:30,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:05:30,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:05:32,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:05:32,306 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:05:32,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:05:32,915 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:05:32,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32 WrapperNode [2020-10-14 04:05:32,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:05:32,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:05:32,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:05:32,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:05:32,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (1/1) ... [2020-10-14 04:05:32,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (1/1) ... [2020-10-14 04:05:33,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (1/1) ... [2020-10-14 04:05:33,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (1/1) ... [2020-10-14 04:05:33,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (1/1) ... [2020-10-14 04:05:33,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (1/1) ... [2020-10-14 04:05:33,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (1/1) ... [2020-10-14 04:05:33,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:05:33,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:05:33,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:05:33,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:05:33,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (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 [2020-10-14 04:05:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:05:33,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:05:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:05:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:05:33,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:05:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:05:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:05:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:05:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:05:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:05:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:05:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:05:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:05:41,614 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:05:41,614 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:05:41,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:05:41 BoogieIcfgContainer [2020-10-14 04:05:41,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:05:41,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:05:41,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:05:41,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:05:41,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:05:30" (1/3) ... [2020-10-14 04:05:41,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504738a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:05:41, skipping insertion in model container [2020-10-14 04:05:41,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:05:32" (2/3) ... [2020-10-14 04:05:41,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504738a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:05:41, skipping insertion in model container [2020-10-14 04:05:41,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:05:41" (3/3) ... [2020-10-14 04:05:41,639 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label42.c [2020-10-14 04:05:41,656 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:05:41,669 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:05:41,689 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:05:41,731 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:05:41,731 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:05:41,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:05:41,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:05:41,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:05:41,732 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:05:41,732 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:05:41,732 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:05:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:05:41,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:05:41,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:41,788 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] [2020-10-14 04:05:41,788 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:41,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:41,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1436696441, now seen corresponding path program 1 times [2020-10-14 04:05:41,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:41,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060338563] [2020-10-14 04:05:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:42,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:42,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:05:42,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:42,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-14 04:05:42,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:42,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:05:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:05:42,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:05:42,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:05:42,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:42,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:42,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:42,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:42,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:42,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 04:05:42,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:42,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:42,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:05:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:05:42,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060338563] [2020-10-14 04:05:42,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:05:42,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:05:42,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511542157] [2020-10-14 04:05:42,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:05:42,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:42,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:05:42,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:05:42,807 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:05:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:05:56,073 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-14 04:05:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:05:56,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 04:05:56,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:05:56,108 INFO L225 Difference]: With dead ends: 1692 [2020-10-14 04:05:56,109 INFO L226 Difference]: Without dead ends: 1012 [2020-10-14 04:05:56,125 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 [2020-10-14 04:05:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-14 04:05:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-14 04:05:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-14 04:05:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-14 04:05:56,280 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 46 [2020-10-14 04:05:56,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:05:56,281 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-14 04:05:56,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:05:56,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-14 04:05:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-14 04:05:56,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:05:56,288 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:05:56,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:05:56,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:05:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:05:56,289 INFO L82 PathProgramCache]: Analyzing trace with hash -462629692, now seen corresponding path program 1 times [2020-10-14 04:05:56,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:05:56,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99029783] [2020-10-14 04:05:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:05:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:56,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:56,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:58,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:58,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-14 04:05:58,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:05:58,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1855 [2020-10-14 04:05:58,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:58,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:05:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:05:58,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:05:58,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:05:58,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:05:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:58,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:58,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:05:58,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 04:05:58,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:58,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:05:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:58,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:05:58,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:05:58,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:05:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:05:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:05:58,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:05:58,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:05:58,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:05:58,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 04:05:58,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:05:58,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:05:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:05:58,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:05:58,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:05:58,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:05:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:05:58,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99029783] [2020-10-14 04:05:58,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:05:58,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:05:58,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643205771] [2020-10-14 04:05:58,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:05:58,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:05:58,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:05:58,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:05:58,625 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 5 states. [2020-10-14 04:06:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:11,148 INFO L93 Difference]: Finished difference Result 2884 states and 4479 transitions. [2020-10-14 04:06:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:11,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-14 04:06:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:11,160 INFO L225 Difference]: With dead ends: 2884 [2020-10-14 04:06:11,161 INFO L226 Difference]: Without dead ends: 1888 [2020-10-14 04:06:11,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:06:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2020-10-14 04:06:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1884. [2020-10-14 04:06:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-14 04:06:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2587 transitions. [2020-10-14 04:06:11,241 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2587 transitions. Word has length 117 [2020-10-14 04:06:11,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:11,245 INFO L479 AbstractCegarLoop]: Abstraction has 1884 states and 2587 transitions. [2020-10-14 04:06:11,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:06:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2587 transitions. [2020-10-14 04:06:11,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-14 04:06:11,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:11,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:06:11,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:06:11,258 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:11,259 INFO L82 PathProgramCache]: Analyzing trace with hash 975469648, now seen corresponding path program 1 times [2020-10-14 04:06:11,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:11,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987998046] [2020-10-14 04:06:11,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:11,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:11,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:12,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:12,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 04:06:12,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:06:12,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-10-14 04:06:12,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:12,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:12,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:06:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:06:12,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:12,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:12,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:12,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:12,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:06:12,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:12,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:12,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:12,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:12,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:12,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:12,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:12,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:06:12,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:12,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 04:06:12,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:12,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:12,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:12,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:12,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:06:12,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:06:12,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987998046] [2020-10-14 04:06:12,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:12,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:06:12,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608925848] [2020-10-14 04:06:12,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:12,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:12,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:12,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:12,453 INFO L87 Difference]: Start difference. First operand 1884 states and 2587 transitions. Second operand 5 states. [2020-10-14 04:06:28,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:28,269 INFO L93 Difference]: Finished difference Result 4659 states and 6588 transitions. [2020-10-14 04:06:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:28,270 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-14 04:06:28,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:28,287 INFO L225 Difference]: With dead ends: 4659 [2020-10-14 04:06:28,287 INFO L226 Difference]: Without dead ends: 2781 [2020-10-14 04:06:28,292 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 [2020-10-14 04:06:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2020-10-14 04:06:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2775. [2020-10-14 04:06:28,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-10-14 04:06:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3665 transitions. [2020-10-14 04:06:28,364 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3665 transitions. Word has length 120 [2020-10-14 04:06:28,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:28,365 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3665 transitions. [2020-10-14 04:06:28,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:06:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3665 transitions. [2020-10-14 04:06:28,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 04:06:28,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:28,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:06:28,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:06:28,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:28,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1743671988, now seen corresponding path program 1 times [2020-10-14 04:06:28,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:28,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780631917] [2020-10-14 04:06:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:28,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:28,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:29,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 04:06:29,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:06:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 820 [2020-10-14 04:06:29,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:29,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:06:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:06:29,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:29,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:29,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:29,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:29,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:29,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:29,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:06:29,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:29,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:29,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:29,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:29,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:29,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:29,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:06:29,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:29,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 04:06:29,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:29,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:06:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:06:29,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780631917] [2020-10-14 04:06:29,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:29,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:06:29,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951126813] [2020-10-14 04:06:29,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:29,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:29,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:29,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:29,567 INFO L87 Difference]: Start difference. First operand 2775 states and 3665 transitions. Second operand 5 states. [2020-10-14 04:06:49,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:06:49,355 INFO L93 Difference]: Finished difference Result 6887 states and 9375 transitions. [2020-10-14 04:06:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:06:49,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-14 04:06:49,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:06:49,381 INFO L225 Difference]: With dead ends: 6887 [2020-10-14 04:06:49,381 INFO L226 Difference]: Without dead ends: 4118 [2020-10-14 04:06:49,388 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 [2020-10-14 04:06:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2020-10-14 04:06:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 4111. [2020-10-14 04:06:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4111 states. [2020-10-14 04:06:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4111 states to 4111 states and 5204 transitions. [2020-10-14 04:06:49,482 INFO L78 Accepts]: Start accepts. Automaton has 4111 states and 5204 transitions. Word has length 125 [2020-10-14 04:06:49,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:06:49,483 INFO L479 AbstractCegarLoop]: Abstraction has 4111 states and 5204 transitions. [2020-10-14 04:06:49,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:06:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 4111 states and 5204 transitions. [2020-10-14 04:06:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 04:06:49,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:06:49,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:06:49,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:06:49,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:06:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:06:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1104572304, now seen corresponding path program 1 times [2020-10-14 04:06:49,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:06:49,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395959523] [2020-10-14 04:06:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:06:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:49,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:50,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:50,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 04:06:50,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:06:50,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 807 [2020-10-14 04:06:50,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:50,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:06:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-14 04:06:50,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 04:06:50,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:06:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:50,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:50,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:06:50,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:06:50,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:50,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:50,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:06:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:06:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:06:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:06:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:06:50,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:06:50,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:06:50,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 04:06:50,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:06:50,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 04:06:50,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:06:50,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:06:50,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:06:50,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:06:50,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:06:50,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 04:06:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:06:50,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395959523] [2020-10-14 04:06:50,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:06:50,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:06:50,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562371295] [2020-10-14 04:06:50,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:06:50,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:06:50,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:06:50,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:06:50,675 INFO L87 Difference]: Start difference. First operand 4111 states and 5204 transitions. Second operand 5 states. [2020-10-14 04:07:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:02,863 INFO L93 Difference]: Finished difference Result 9559 states and 12461 transitions. [2020-10-14 04:07:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:07:02,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-14 04:07:02,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:02,892 INFO L225 Difference]: With dead ends: 9559 [2020-10-14 04:07:02,892 INFO L226 Difference]: Without dead ends: 5454 [2020-10-14 04:07:02,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:07:02,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5454 states. [2020-10-14 04:07:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5454 to 5006. [2020-10-14 04:07:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5006 states. [2020-10-14 04:07:03,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 6255 transitions. [2020-10-14 04:07:03,068 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 6255 transitions. Word has length 143 [2020-10-14 04:07:03,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:03,069 INFO L479 AbstractCegarLoop]: Abstraction has 5006 states and 6255 transitions. [2020-10-14 04:07:03,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:07:03,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 6255 transitions. [2020-10-14 04:07:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 04:07:03,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:03,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:07:03,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:07:03,074 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:03,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:03,074 INFO L82 PathProgramCache]: Analyzing trace with hash -442015768, now seen corresponding path program 1 times [2020-10-14 04:07:03,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:03,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463490033] [2020-10-14 04:07:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:03,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:03,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:07,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:07,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:07,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 04:07:07,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:07:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4863 [2020-10-14 04:07:07,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:07,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:07:07,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 04:07:07,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:07:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:08,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:08,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:08,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:07:08,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:08,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:07:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:07:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:08,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:08,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:08,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:09,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:09,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:07:09,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:07:09,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1240 [2020-10-14 04:07:09,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:09,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:09,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:09,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:09,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 04:07:09,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:07:09,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463490033] [2020-10-14 04:07:09,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:07:09,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:07:09,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822168220] [2020-10-14 04:07:09,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:07:09,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:09,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:07:09,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:07:09,551 INFO L87 Difference]: Start difference. First operand 5006 states and 6255 transitions. Second operand 6 states. [2020-10-14 04:07:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:32,211 INFO L93 Difference]: Finished difference Result 17465 states and 22509 transitions. [2020-10-14 04:07:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:07:32,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-10-14 04:07:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:32,272 INFO L225 Difference]: With dead ends: 17465 [2020-10-14 04:07:32,272 INFO L226 Difference]: Without dead ends: 12465 [2020-10-14 04:07:32,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:07:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12465 states. [2020-10-14 04:07:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12465 to 11162. [2020-10-14 04:07:32,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11162 states. [2020-10-14 04:07:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11162 states to 11162 states and 13848 transitions. [2020-10-14 04:07:32,678 INFO L78 Accepts]: Start accepts. Automaton has 11162 states and 13848 transitions. Word has length 147 [2020-10-14 04:07:32,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:32,679 INFO L479 AbstractCegarLoop]: Abstraction has 11162 states and 13848 transitions. [2020-10-14 04:07:32,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:07:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11162 states and 13848 transitions. [2020-10-14 04:07:32,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-14 04:07:32,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:32,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:07:32,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:07:32,686 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:32,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:32,687 INFO L82 PathProgramCache]: Analyzing trace with hash 909482819, now seen corresponding path program 1 times [2020-10-14 04:07:32,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:32,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638026569] [2020-10-14 04:07:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:34,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:34,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:34,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 04:07:34,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:07:34,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2164 [2020-10-14 04:07:34,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:34,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:34,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-14 04:07:34,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:07:34,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:35,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:35,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:35,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:35,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:35,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:35,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:07:35,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:35,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:07:35,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:35,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:07:35,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:35,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:35,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:35,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 04:07:35,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-14 04:07:35,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:35,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:07:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 137 [2020-10-14 04:07:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:07:35,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:07:35,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638026569] [2020-10-14 04:07:35,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:07:35,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:07:35,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922748687] [2020-10-14 04:07:35,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:07:35,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:07:35,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:07:35,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:07:35,520 INFO L87 Difference]: Start difference. First operand 11162 states and 13848 transitions. Second operand 5 states. [2020-10-14 04:07:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:07:54,102 INFO L93 Difference]: Finished difference Result 25826 states and 33128 transitions. [2020-10-14 04:07:54,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:07:54,111 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 190 [2020-10-14 04:07:54,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:07:54,181 INFO L225 Difference]: With dead ends: 25826 [2020-10-14 04:07:54,181 INFO L226 Difference]: Without dead ends: 14670 [2020-10-14 04:07:54,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:07:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14670 states. [2020-10-14 04:07:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14670 to 14230. [2020-10-14 04:07:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14230 states. [2020-10-14 04:07:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14230 states to 14230 states and 17505 transitions. [2020-10-14 04:07:54,581 INFO L78 Accepts]: Start accepts. Automaton has 14230 states and 17505 transitions. Word has length 190 [2020-10-14 04:07:54,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:07:54,582 INFO L479 AbstractCegarLoop]: Abstraction has 14230 states and 17505 transitions. [2020-10-14 04:07:54,583 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:07:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 14230 states and 17505 transitions. [2020-10-14 04:07:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-14 04:07:54,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:07:54,594 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:07:54,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:07:54,595 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:07:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:07:54,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1361557630, now seen corresponding path program 1 times [2020-10-14 04:07:54,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:07:54,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879260656] [2020-10-14 04:07:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:07:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:54,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:54,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:55,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:56,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:59,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:59,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 04:07:59,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:07:59,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 04:07:59,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:59,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:59,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:07:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:07:59,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:07:59,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:07:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:59,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:07:59,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:07:59,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:07:59,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:07:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:07:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:07:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:07:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:07:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:07:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:07:59,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:07:59,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:07:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:07:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:00,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:00,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:08:00,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 04:08:00,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:00,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:00,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:08:00,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-14 04:08:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:00,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:00,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:08:00,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 04:08:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:00,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:08:00,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:08:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 163 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:08:00,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879260656] [2020-10-14 04:08:00,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:00,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:08:00,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240531748] [2020-10-14 04:08:00,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:08:00,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:00,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:08:00,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:08:00,702 INFO L87 Difference]: Start difference. First operand 14230 states and 17505 transitions. Second operand 7 states. [2020-10-14 04:08:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:31,990 INFO L93 Difference]: Finished difference Result 39684 states and 52181 transitions. [2020-10-14 04:08:31,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:08:31,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-14 04:08:31,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:32,129 INFO L225 Difference]: With dead ends: 39684 [2020-10-14 04:08:32,129 INFO L226 Difference]: Without dead ends: 25460 [2020-10-14 04:08:32,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:08:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25460 states. [2020-10-14 04:08:32,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25460 to 21352. [2020-10-14 04:08:32,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21352 states. [2020-10-14 04:08:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21352 states to 21352 states and 27111 transitions. [2020-10-14 04:08:34,039 INFO L78 Accepts]: Start accepts. Automaton has 21352 states and 27111 transitions. Word has length 236 [2020-10-14 04:08:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:34,040 INFO L479 AbstractCegarLoop]: Abstraction has 21352 states and 27111 transitions. [2020-10-14 04:08:34,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:08:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 21352 states and 27111 transitions. [2020-10-14 04:08:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 04:08:34,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:34,053 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:08:34,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:08:34,054 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:34,055 INFO L82 PathProgramCache]: Analyzing trace with hash -412506661, now seen corresponding path program 1 times [2020-10-14 04:08:34,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:34,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191386082] [2020-10-14 04:08:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:34,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:34,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:34,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:35,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:36,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:38,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:39,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:39,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 04:08:39,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 04:08:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 04:08:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:39,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-14 04:08:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:08:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:39,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:39,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:39,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:39,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:39,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:08:39,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:39,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:39,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:39,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:39,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:39,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:08:39,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:39,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 04:08:39,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:39,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:39,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:39,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:39,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:39,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 04:08:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:39,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:39,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:39,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:08:39,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:39,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 04:08:39,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:39,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-14 04:08:39,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:08:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-14 04:08:39,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191386082] [2020-10-14 04:08:39,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:08:39,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:08:39,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673011281] [2020-10-14 04:08:39,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:39,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:39,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:39,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:39,674 INFO L87 Difference]: Start difference. First operand 21352 states and 27111 transitions. Second operand 5 states. [2020-10-14 04:09:01,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:01,139 INFO L93 Difference]: Finished difference Result 44041 states and 56545 transitions. [2020-10-14 04:09:01,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:09:01,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-14 04:09:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:01,236 INFO L225 Difference]: With dead ends: 44041 [2020-10-14 04:09:01,236 INFO L226 Difference]: Without dead ends: 25297 [2020-10-14 04:09:01,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:09:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25297 states. [2020-10-14 04:09:01,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25297 to 24856. [2020-10-14 04:09:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24856 states. [2020-10-14 04:09:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24856 states to 24856 states and 31429 transitions. [2020-10-14 04:09:01,850 INFO L78 Accepts]: Start accepts. Automaton has 24856 states and 31429 transitions. Word has length 248 [2020-10-14 04:09:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:01,851 INFO L479 AbstractCegarLoop]: Abstraction has 24856 states and 31429 transitions. [2020-10-14 04:09:01,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:09:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 24856 states and 31429 transitions. [2020-10-14 04:09:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-14 04:09:01,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:01,867 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:09:01,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:09:01,867 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:01,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:01,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1211913623, now seen corresponding path program 1 times [2020-10-14 04:09:01,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:01,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330008518] [2020-10-14 04:09:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:02,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:02,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:06,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:06,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-14 04:09:06,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:09:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-14 04:09:06,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:06,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:09:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 04:09:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:07,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:07,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:07,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:07,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:07,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:09:07,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:07,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:07,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:07,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:07,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:09:07,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 04:09:07,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:07,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:07,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:07,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:09:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:09:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:07,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:07,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:09:07,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-14 04:09:07,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:07,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:07,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:07,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-14 04:09:07,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:09:07,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330008518] [2020-10-14 04:09:07,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:07,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:07,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919064200] [2020-10-14 04:09:07,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:07,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:07,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:07,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:07,863 INFO L87 Difference]: Start difference. First operand 24856 states and 31429 transitions. Second operand 7 states.